JP2013010869A - Pseudo adhesive sheet and information recording laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mail article or delivery having a function such that "opening rate" of mail articles or deliveries is improved and an opened "postcard" is made to be kept on hand, since, although direct delivery of a confidential document or direct mail to a specific customer is frequently performed, and a number of mail articles or deliveries are dropped in each customer's post per day, most of such mail articles or deliveries are disposed of as they are after selecting necessary mail articles or deliveries by each person to the confirmable extent from senders of "postcards" or other descriptions on the surface, or disposed of immediately after once opening them to glance the description contents on the inside.SOLUTION: The pseudo adhesive sheet A1 has an authenticity determination print layer 2, and the information recording laminate uses the pseudo adhesive sheet. According to this, the mail article or delivery having a function such that the opening rate is improved and an opened article is made to be kept on hand can be provided.

Description

The present invention can be adhered to an information recording body, and the information recording surfaces on the information recording body are detachably attached using heating / pressurizing means, that is, easily peelable. The present invention relates to a pseudo adhesive sheet that can be stuck so as not to be naturally peeled, and an information recording laminate, which is a laminate in which the pseudo adhesive sheet is laminated on an information recording body.
In particular, the information recording laminate in which the pseudo-adhesive sheet has an authenticity judgment printing layer and the judgment can be made by the authenticity judgment printing layer only after the pseudo-adhesion surface to which the information recording laminate is attached is peeled off. It is about the body.
“Folding so as to sandwich” means, for example, that a “sheet-like material (information recording body)” is folded in half (the center of the sheet is a “fold”), and a space (inside It means that “another sheet (pseudo-adhesive sheet)” is inserted into the space), and the entire “another sheet” just enters the inner space.
When this “sheet-like thing” is folded in half, on the “inner side”, for example, the “left side” is set as “one side” with the “fold” of the bifold as the boundary, and the “right side” “Surface” is defined as “the other surface”, and “another surface of another sheet” inserted (sandwiched) in this inner space is bonded to “one surface” and at the same time, The “back side” and the “other side” are bonded together, and “another sheet” is sandwiched between “sheet-like things” to become an “integrated object (information recording laminate)” Means.
This “folding” includes trifolding and other more complicated folding methods, but in both cases, one side of the many folded surfaces and the other side are joined together. It will be pasted together.
The “authentication judgment printing layer” is a “layer” for proving the “authenticity” of the pseudo-adhesive sheet and the information recording laminate obtained by laminating the pseudo-adhesive sheet, and includes offset printing, letterpress printing, and screen printing. It is provided by a printing method such as printing or gravure printing, and the “layer” itself has a “predetermined optical effect”, and this “predetermined” is to be determined. When the “optical effect” is “clearly” visually recognized, it is “determined” as “authentic”.

The “predetermined optical effect” is greatly different from “the color tone exhibited by a normal printing layer”, that is, “the same color tone in all directions” exhibited by a normal color pigment included in the “printing layer”. And means that light of “color tone” different from the “color tone” of the illumination light illuminating the “layer” is emitted,
・ When the “layer” is illuminated with white light, only a part of the white light of a certain wavelength is reflected (emitted) in a predetermined direction, or
・ Light that emits (emits) light of a wavelength different from the light that illuminates the “layer” in all directions,
The material constituting the printing layer itself has the above properties, or the “pigment” contained in the printing layer has the above properties.
Therefore, although the diffraction grating layer and the hologram forming layer have effects similar to the above, they cannot be provided by a normal printing method such as ink itself or including a pigment. Not included.
However, this does not exclude the use of a brilliant hologram pigment as the pigment.
The “transparent fine particles” are metal compounds such as metal oxides, metal nitrides or metal carbides and have high transparency, and have a mass average particle diameter of 5 μm or less, or transparent resin A powder having a mass average particle diameter of 10 μm or less and a refractive index different from that of a resin for dispersing and holding the powder, or a metal particle having a mass average particle diameter of 1 μm or less. Means having high transparency when dispersed in a resin.
In the present specification, “%” and “part” indicating the composition are based on mass unless otherwise specified.

(Main application) As the main application of the pseudo adhesive sheet and information recording laminate of the present invention,
Information related to personal privacy, information that should not be disclosed to a wide range of third parties, and the contents cannot be grasped simply by looking at the appearance of the recipient. Describes information that you want to give you the unexpectedness (meaning that it gives the recipient a higher-than-expected impression and a high level of interest), as well as privilege information such as point services and discount vouchers for the recipient Therefore, it is used for documents that contain information that you do not want to be known during mailing or delivery, and a pseudo-adhesive sheet is attached to these documents. By folding and pseudo-adhering, the above-mentioned information such as the document is concealed from a third party, and the information is transmitted only to an authorized recipient.
Of course, in addition to this, documents that contain information are folded in half, folded in three or more times, reduced in size, transported, and then the pseudo-adhesive part is opened. Can be used for the purpose of use as the original size.
These “documents that describe information” are hereinafter also referred to as “information recording bodies”. However, this “information recording body” is a “laminated body” in which a pseudo-adhesive sheet is pasted, and further, this “laminated body”. A product that is folded twice or more times and is thermocompression bonded by heating, pressurizing, or the like between the pseudo-adhesive surfaces is referred to as an “information recording laminate”.
When the information recording body is folded three or more times, a plurality of sticking surfaces are generated, and therefore different pseudo adhesive sheets may be applied to the individual sticking surfaces.
The information records are increasing in recent years, such as mobile phones, credits, taxes, pensions, securities, deposits and savings, gas / water / electricity bills, payment notices, receipts and maturity notices, etc. Documents that contain information related to personal privacy (including personal information)
Mainly extracted from customer information databases such as retail stores that have been used in the past and credit card companies that are members of the membership, etc., and “mail” or “email service” described below. Banks, securities companies, credit card companies, department stores, mass merchandisers, etc. send direct mails that are delivered using them, and disclose the contents to third parties as much as possible. Documents that should not be listed.
Conventionally, a “sealed letter” has been used for the mailing and delivery of documents relating to such personal information and information that should not be disclosed to a third party from the viewpoint of privacy protection and ensuring confidentiality.
However, the “sealed letter” has the disadvantage that the postage is higher than the “postcard” and the cost is high.

Also, in order to prevent accidental delivery to a third party who is not the principal and leakage of the information when the notification contents differ for each recipient, the data for each recipient is managed by computer control, and the recipient name and The mainstream method is to ensure the consistency of the contents of notifications and to ensure the accuracy and labor saving of shipping work. In this work, the data input to the computer is continuously sent to each recipient. When you want to automatically check the order and print contents again immediately before the final shipment, the postcard itself or "postcard" is used instead of "sealed letter". It is necessary to use a “sheet” in the form of a sheet (these “postcard” and “sheet” may be collectively referred to as “information recording body”).
These “postcards” or “sheets” (that is, “information recording medium”) are second-class postal items that are domestic regular postal items (normal postcards: maximum size 10.7 × 15.4 cm, minimum size) 9x14cm, weight 2-6g, or reciprocating postcard: maximum size 21.4cm (two fold) x 15.4cm, minimum size 18cm (two fold) x 15.4cm, weight 4-12g), international normal Letters, postcards, printed matter (including greeting cards, etc.) as postal mail (also called plane route flights), letters, postcards, postcards, printed matter and Braille (greeting cards, D-mail, P-mail, etc.) ), Echo postcards, e-sense cards, etc.
Or “private postcards” (ordinary postcards and return postcards created by persons other than Postal Service Co., Ltd.) as defined in Article 22 of the Postal Service Co., Ltd.
Regular postcards should be rectangular paper with a long side of 14 centimeters to 15.4 centimeters and short sides of 9 centimeters to 10.7 centimeters. Reciprocating postcards should have a long side of 18 centimeters to 21.4 centimeters. Below, fold the rectangular paper with a short side of 14 cm to 15.4 cm so that the short side is aligned and the crease line is on the right side (the lower side if it is used for a long side). , The upper piece is the outgoing part, the lower piece is the reply part, and the back side of the outgoing part and the front side of the reply part are inside,
Paper quality and thickness are equivalent to or better than those issued by Postal Service Co., Ltd.,
The weight is usually from 2 grams to 6 grams for a postcard, and from 4 grams to 12 grams for a return postcard (each of the outgoing and reply parts is from 2 grams to 6 grams),
The surface color is white or light,
A postage stamp equivalent to half of the price of the return postcard is used on the upper left part of the reply post part of the return postcard (upper right part if it is used horizontally) Attached or payee-paid display,
At the center of the top or left side of the surface (or the right side if it is to be used for a long time), the postcard for normal postcards or the equivalent letter is used for the postcard and reply of the return postcard. In the section, there are “postal round-trip postcard” or a letter that is clearly displayed.

In addition, election mail, which is a direct mail for PR of candidates issued after the announcement of elections, elections for members of the House of Representatives elected in the small constituencies, guidance for opening election offices that are made privately by political parties, and announcements before announcement Polling place admission tickets issued by the association,
Deliver only the designated area without addressing, and it is often used for various types of advertising and is close to posting, delivery area designation mail (town mail), etc.
And a lottery is printed at the bottom, and it is also a “postcard with lottery” that wins prizes by lottery. Postcards, etc. that are used in accordance with Japanese customs, etc., and various bonuses, discount coupons, service tickets, etc. that can be separated into a part of them, or access to an address or dial By calling the number, you can get information on various events, information about special benefits, point services, etc., that is, Internet WEB address, toll-free number, etc. Used for the purpose of providing various services;
Or, reduce the cost of delivery slips from the delivery by the shipping company on the condition of “reduction of loss in case of loss”, “limited to small size”, “no need for postage-in” In a delivery service called "email service" that reduces the cost of delivery while maintaining a tracking system, as a means to send documents such as various notices, invitations, or invoices, it also sends confidential documents etc. Examples of the means for delivery include those delivered without restrictions such as postal rules.

Furthermore, in restaurants, mail-order sales, money lending, real estate companies, etc., it is not used for the purpose of advertising / promotional delivery (posting) of flyers or flyers to individual homes, or for commercial purposes. Used as an example of putting public things directly into the mailbox, when it is performed by local governments (regional event guides and notices) and water departments (mainly notices of water cuts, waste water, traffic regulations) Even if it is a postal item or a delivery item that does not require much confidentiality, it is possible to grasp the transmission information (what is written) simply by looking at its appearance when the recipient receives it. Information that is arranged so that it is not possible to open, the pseudo-adhesive part is opened, and it is configured so that the target transmission information can be confirmed for the first time, etc. used for the purpose of attracting the recipient's interest etc. All work of communication that circulates in the market, and the like.
Of course, individuals use the pseudo-adhesive sheet to create the above-mentioned information record, and sell it as a “postcard creation kit” for mailing, delivering, or presenting as a present, etc. It can also be used for other applications.
The pseudo-adhesive sheet and information recording laminate of the present invention are required to be particularly excellent in designability among the above information recording bodies or information transmission materials, and the “opening ratio” (pseudo-adhesion) It is suitable for use in a field that needs to be improved.

(Prior art)
In recent years, various “postcards” have been proposed in place of “sealed letters”, which can conceal the recording contents related to personal privacy.
As one of these proposals, there is a “seal paper” that can conceal the recorded content by sticking it on the letters and numbers written on the surface of ordinary postcards. “Seal paper” uses a weak adhesive on the adhesive surface, so it is necessary to provide release paper to protect the weak adhesive layer, which increases costs and makes it difficult to dispose of the release paper. There was a drawback of becoming.
Further, when the “seal paper” is peeled off, the character portion described in the “postcard” is peeled off and transferred to the weak adhesive layer surface, and the character often cannot be read.
Furthermore, since this “seal paper” can be removed without leaving a trace of opening, there is a disadvantage that the effect of preventing privacy infringement is inferior.
In addition, as another material, a sheet with aluminum foil laminated so that the letters written on the surface of the "postcard" cannot be seen from the outside is attached to the letters of the "postcard" and the edge of the "postcard" There is a “label” that can be opened for the first time by cutting the perforation provided along. However, since this “label” is a laminate composed of a plurality of components, the cost is high, and the removed “label” is not only difficult to break, but also a non-combustible material, so that the disposal process becomes complicated. .
In addition, the above-mentioned “sticker paper” and “label” can only be used to conceal a part of the described information, and if a lot of information needs to be mailed, the cost becomes high. Even had to use a sealed letter.

Therefore, in order to secure the amount of information, various “postcards” that can hide information “inside” have been proposed and put into practical use.
As an example of the proposal, there is, for example, a “sealing postcard” in which a heat-sensitive adhesive layer capable of recording information on the surface is formed on one side of a paper support (Patent Document 1: Japanese Utility Model Laid-Open No. 1-148371). reference.).
This “sealing postcard” is folded into a “postcard size”, and after recording information on the surface of the heat-sensitive adhesive, it is folded in two and heated with an adhesive strength that allows the heat-sensitive adhesive to be peeled off. It is to be crimped.
However, since this “sealing postcard” records information on the surface of the heat-sensitive adhesive layer, that is, the peeled surface, not only has the disadvantage that the recorded content is transferred to the other surface, but also the adhesion of the heat-sensitive adhesive layer. Because it is difficult to adjust the strength, "peeling curl" (a phenomenon in which the base material is greatly curled when the base material is peeled off using the adhesive surface as an interface. In extreme cases, the base material is rounded into a cylindrical shape. ) Occurs, making it difficult to interpret the information.

Therefore, a method of adjusting the temperature and pressure of thermocompression bonding can be considered in order to make the peeling between the heat-sensitive adhesive layers appropriate. However, it is extremely difficult to adjust the peelability by this method, and natural peeling due to poor adhesion is possible. There are drawbacks that occur (if personal information that should be kept secret is included in the recorded information, it is considered as unnecessary disclosure of personal information), and information recording surfaces such as direct mail An information recording body whose entire surface is covered with ink has a drawback that heat-sensitive adhesion itself cannot be performed and an integrated product cannot be obtained.
In addition, after recording information on two postcard-sized information recording bodies, the information recording surfaces of each recording body can be heat-bonded in a releasable manner, and a heat-sensitive adhesive sheet having double-sided adhesiveness, and An information recording medium used has also been proposed (see Japanese Patent Laid-Open No. 4-126298).
However, in the case of an information recording body using this heat-sensitive adhesive sheet, information recording of two postcard-sized recording bodies on which information is recorded on a heat-sensitive adhesive sheet comprising a synthetic resin coating layer formed on both sides of the support. When the heat-sensitive adhesive is sandwiched between the surfaces, the information recording surface and the synthetic resin coating layer are in direct contact with each other, and the heat-fused synthetic resin coating layer protrudes from the cut portion of the information recording body, so that the support and the synthetic resin coating layer are coated. It is not satisfactory in that the peeling interface between the engineering layers is covered with resin, and it tends to be unsealable, and the adhesiveness between the surface of the recording material covered with high-concentration ink and the synthetic resin coating layer is poor. It was.

In order to overcome these drawbacks, a thermoplastic resin layer that can be easily peeled off on one side of a support without being naturally peeled, and that does not cause melting or protruding when heated to 100 ° C. or lower. A heat-sensitive laminated sheet in which a heat-sensitive adhesive layer having excellent adhesiveness and capable of heat-adhering to an information recording body with heat of 100 ° C. or less is formed on both surfaces of a formed product provided with a (pseudo-adhesive layer). Is excellent in heat-sensitive adhesiveness to the information recording body, and is suitable for releasably bonding the recording surfaces of the information recording body on which information is recorded without transferring the recorded information to the other surface. In addition, by setting the size to “postcard size” in particular, it is possible to send more than twice as much information as the postcard with “postcard” mailing fees, and to provide information transmission means with excellent privacy protection As Thermal lamination sheet is (Patent Document 3:. Hei 7-17166 and JP-or, see JP Patent No. 2645535) has been proposed.
However, even if this heat-sensitive laminated sheet is used, the recipient simply confirms the sender, i.e., just glances at the appearance, and often disposes without opening the pseudo-adhesive part, or Even if you open it and check the information written inside it, it is enough to write down only the necessary part of the information and discard the opened information record (laminated) body or read the information itself. Therefore, it is determined that the information does not need to be stored, and the information recording (laminated) body that has been opened is quickly discarded.
In other words, it does not have any functions in terms of improving the “opening ratio” and ensuring the continuous provision of sender information by placing the open information record (laminate) in the hands of the recipient. It was a thing.

Japanese Utility Model Publication No. 1-148371 Japanese Patent Laid-Open No. 4-126298 Japanese Patent Laid-Open No. 7-17166

In order to solve the above-described problems, the present invention
A pseudo-adhesive sheet having an authenticity determination printing layer provided on the pseudo-adhesive sheet, and an information recording layer that is folded in at least two parts is bonded by thermocompression bonding through the pseudo-adhesive sheet to form an information recording laminate. The information recorded on the body and the authenticity judgment printing layer are concealed inside, thereby peeling off the pseudo-adhesive surface of the information recording laminate, that is, the authenticity judgment printing layer only after the fold is opened. It is related with the pseudo-adhesive sheet which can provide the information recording laminated body from which this can be observed and the information can be confirmed.
And the attention of the recipient who received the information recording stack is sufficiently raised, the interest is increased, the “opening ratio” is improved, and the information recording stack is sent from a legitimate sender. There are provided a pseudo-adhesive sheet that can be easily “determined” and an information recording laminate using the pseudo-adhesive sheet.

To solve the above problem,
The first aspect of the pseudo-adhesive sheet of the present invention is:
An authenticity determination printing layer and an adhesive layer are provided in this order on one surface of the transparent base material, and a pseudo adhesive layer is provided on the other surface of the transparent base material.
According to the pseudo-adhesive sheet of the first aspect,
A pseudo-adhesive sheet, wherein an authenticity determination printing layer and an adhesive layer are provided in this order on one surface of a transparent substrate, and a pseudo-adhesion layer is provided on the other surface of the transparent substrate. It is possible to provide a pseudo-adhesive sheet that can easily determine the authenticity of an information recording laminate using the pseudo-adhesive sheet and can improve its “opening ratio”.
The second aspect of the pseudo adhesive sheet of the present invention is:
An authenticity determination printing layer and a pseudo-adhesion layer are provided in this order on one surface of the transparent substrate, and an adhesive layer is provided on the other surface of the transparent substrate.
According to the pseudo adhesive sheet of the second aspect,
A pseudo adhesive sheet, wherein an authenticity determination printing layer and a pseudo adhesive layer are provided in this order on one surface of a transparent substrate, and an adhesive layer is provided on the other surface of the transparent substrate. It is possible to provide a pseudo-adhesive sheet that can easily determine the authenticity of an information recording laminate using the pseudo-adhesive sheet and can improve its “opening ratio”.
The third aspect of the pseudo-adhesive sheet of the present invention is:
The adhesive layer and the pseudo adhesive layer contain transparent fine particles.

According to the pseudo adhesive sheet of the third aspect,
The pseudo-adhesive sheet according to the first or second aspect, wherein the adhesive layer and the pseudo-adhesive layer contain transparent fine particles, can be provided. In addition, it is possible to provide a pseudo-adhesive sheet that can conceal the presence of the authenticity-determined printing layer and can further improve its anti-counterfeiting property.
The fourth aspect of the pseudo-adhesive sheet of the present invention is:
The authenticity determination print layer is made of a liquid crystal material.
According to the pseudo adhesive sheet of the fourth aspect,
The pseudo-adhesive sheet according to any one of the first to third aspects, wherein the authenticity determination printing layer is made of a liquid crystal material, and any one of the first to third aspects. In addition to the features of one aspect, it is possible to provide a pseudo-adhesive sheet whose authenticity can be determined more clearly.
The fifth aspect of the pseudo-adhesive sheet of the present invention is:
The authenticity judgment printing layer contains a pearl pigment.
According to the pseudo adhesive sheet of the fifth aspect,
The authenticity determination printing layer may contain a pearl pigment, and can provide the pseudo-adhesive sheet according to any one of the first to third aspects. In addition to the features of the one aspect, it is possible to provide a pseudo-adhesive sheet whose authenticity can be determined more clearly.
The sixth aspect of the pseudo-adhesive sheet of the present invention is:
The authenticity judgment printing layer contains a fluorescent pigment.
According to the pseudo adhesive sheet of the sixth aspect,
The authenticity determination printed layer may include a fluorescent pigment, and can provide the pseudo-adhesive sheet according to any one of the first to third aspects. In addition to the features of the one aspect, it is possible to provide a pseudo-adhesive sheet whose authenticity can be determined more clearly.

The seventh aspect of the present invention is
Of the two surfaces divided by the fold of the information recording body when the information recording body is folded along the fold so as to sandwich the pseudo adhesive sheet according to any one of claims 1 to 6 An information recording laminate in which one surface and the adhesive layer of the pseudo adhesive sheet are bonded, and the other surface and the pseudo adhesive layer of the pseudo adhesive sheet are bonded, the pseudo adhesive layer And the interface with the transparent substrate is peelable.
According to the seventh aspect,
Of the two surfaces divided by the fold of the information recording body when the information recording body is folded along the fold so as to sandwich the pseudo adhesive sheet according to any one of claims 1 to 6 An information recording laminate in which one surface and the adhesive layer of the pseudo adhesive sheet are bonded, and the other surface and the pseudo adhesive layer of the pseudo adhesive sheet are bonded, the pseudo adhesive layer And an information recording laminated body characterized in that the interface with the transparent substrate can be peeled off, the authenticity can be easily determined, and the “opening ratio” can be directly improved. In addition, an information recording laminate can be provided.
In the pseudo-adhesive sheet of the present invention, is an authenticity determination printing layer and an adhesive layer provided in this order on one surface of a transparent substrate, and is the pseudo-adhesion layer provided on the other surface of the transparent substrate? Alternatively, the authenticity determination printing layer and the pseudo adhesive layer are provided in this order on one surface of the transparent substrate, and the adhesive layer is provided on the other surface of the transparent substrate.
Furthermore, the adhesive layer and the pseudo-adhesive layer contain transparent fine particles, and conceal the existence of the authenticity judgment printing layer.
The transparent fine particles contained in the adhesive layer and the pseudo-adhesive layer may be the same transparent fine particles or different transparent fine particles.
Since these transparent fine particles are included in the upper layer (adhesive layer or pseudo-adhesive layer) and lower layer (pseudo-adhesive or adhesive layer) of the authenticity judgment printing layer, authenticity It has the effect of scattering the “illumination light” that illuminates the judgment print layer. Even if the pseudo adhesive sheet is observed from either side, the authenticity judgment print layer cannot be clearly seen, and the pseudo adhesion is not observed. It prevents unauthorized duplication of the authenticity determination print layer from the sheet.

Then, after the pseudo adhesive sheet is sandwiched between information recording bodies to form an information recording laminate, when the information recording laminate is opened and information (information on the information recording body) inside is read, a transparent substrate is used. The interface between the material and the pseudo-adhesive layer becomes the “peel interface (meaning the surface to be peeled)”, and on one side of the opened information recording laminate, the transparent substrate is exposed and becomes the outermost surface, and on the other hand, The adhesive layer is the outermost surface.
At this time, the authenticity determination printed layer provided on the transparent substrate is present on the above-described “peeling interface”. However, the material design of the authenticity determination print layer allows the authenticity determination printed layer to be formed on the transparent substrate. It can be fixed and remain, or it peels off together with the pseudo-adhesion layer, and as a result is exposed on the pseudo-adhesion layer (embedded in the pseudo-adhesion layer, and its surface is flush with the surface of the pseudo-adhesion layer. It is also possible to do so, both of which are suitable.
Here, the “peeling interface” is a (boundary) surface where peeling actually occurs in the interface between each layer of the information recording laminate when the information recording laminate is opened. The situation is that the interface with the lowest interlayer adhesion (the stage where the “static peel strength” of the two layers contributes) starts to peel preferentially, and once peeling starts at that interface, the interface Shift to “dynamic peel strength” (meaning that the peel strength of the two layers is dominated by “dynamic peel strength”. “Dynamic peel strength” is “static Much smaller than "peel strength"), until the interface completely peels off, the possibility of occurrence of peel at other interfaces is greatly limited.
Further, as a modified example of the information recording laminate, the adhesive layer surface of the pseudo adhesive sheet is adhered to the entire surface of the information recording body, and when folding in half, the pseudo adhesive sheet is also folded and the left and right sides of the pseudo adhesive layer are directly A method of pasting and pseudo-bonding is also possible.
In this case, when the information recording laminate is opened, for example, peeling occurs at the interface between the left portion of the pseudo adhesive layer and the transparent substrate (the right portion is fixed to the transparent substrate). The left side of the pseudo-adhesive layer overlaps and adheres to the right side of the adhesive layer, the transparent substrate is exposed on the left side of the information recording laminate, and the double thickness is on the transparent substrate on the right side of the information recording laminate. The pseudo-adhesive layer overlaps, and the pseudo-adhesive layer becomes the outermost surface.

In such a modification, an authenticity determination printing layer is provided on the left side portion of the transparent substrate, and when the information recording laminate is opened, an adhesive layer, a transparent substrate, and Then, the “lamination” composed of the authenticity determination print layer remains so that the authenticity determination print layer on the outermost surface can be clearly determined. (On the right side, there remains a “lamination” consisting of an adhesive layer, a transparent substrate, and a pseudo-adhesion layer of twice the thickness.)
Alternatively, when the authenticity determination printing layer peels off together with the left side portion of the pseudo adhesive layer, and the left side portion of the pseudo adhesive layer overlaps with the right side portion of the pseudo adhesive layer, it is exposed flush with the outermost surface. You may do it.
In any case, when the information recording laminate is opened, the “pseudo-adhesion layer” or “pseudo-adhesion layer containing transparent fine particles” that is on the upper side of the authenticity determination print layer is peeled off, so that the inside A clear authenticity determination printed layer can be observed on the information (information on the information recording medium).
As described above, the adhesive strength between the authenticity determination printed layer and the pseudo adhesive layer is set to be stronger than the adhesive strength between the transparent substrate and the authenticity determined print layer, and both the pseudo adhesive layer and the authenticity determined print layer are When designing the material so that both layers are peeled off at the interface with the transparent substrate, and opening the information recording laminate and reading the information (information on the information recording body) inside it, ”Is the outermost surface of“ the one side when the information recording laminate is opened ”, and“ the surface of the authenticity judgment printed layer and the pseudo-adhesive layer that is in contact with the transparent substrate (the same surface) ” , “The other surface when the information recording laminate is opened” is the outermost surface. At this time, the exposed outermost surface of the authenticity determination print layer is a “mirror surface”, and its optical characteristics are particularly stable and very suitable for authenticity determination.
Of course, in the case of the lamination of the transparent base material, the authenticity judgment print layer, and the adhesive layer, this authenticity judgment print layer is judged through the transparent base material. The interface between the transparent substrate and the transparent substrate is a “mirror surface”, and its optical characteristics are particularly stable and very suitable for authenticity determination.
As the above-mentioned transparent base material, it is possible to reduce the thickness, and the mechanical strength and the printing layer and adhesive layer for authenticity determination on one side, and the pseudo-adhesion layer on the other side In the processing and processing for providing the recording medium, and further in the adhesion processing to the information recording body and the folding processing, the wear resistance against contact with the conveying guide roll of various processing machines is high. It is preferable to use a transparent base material that has solvent resistance, heat resistance, and abrasion resistance suitable for the above, and has appropriate adhesiveness and removability to the pseudo adhesive layer.

Since it depends on the processing method, it is not limited, but a film-like or sheet-like plastic is preferable.
For example, various plastic films such as polyethylene terephthalate (PET), polypropylene, and triacetyl cellulose (TAC) can be exemplified.
The thickness of the transparent substrate is usually 5 to 100 μm, but its handling suitability, particularly when the information recording laminate is appropriate, and when the information recording laminate is opened In order to reduce the difference in thickness (step) between the left and right surfaces, the thickness is desirably 5 to 25 μm.
The pseudo-adhesive sheet is inserted into the folded information recording body and thermocompression bonded to form an information recording laminated body. However, if the “stiffness” of the information recording body is too large or the “stiffness” is too strong, Then, the “force” that the folded information recording body tries to return to the original works strongly, and the information recording laminated body that has been pseudo-adhered naturally peels off. Therefore, the adhesive strength (removable) between the transparent substrate and the pseudo-adhesive layer is greater than this “force”. For this reason, the “stiffness” of the information recording body is preferably small.
As described above, the “force” that tries to return to the original “folded” is relatively small, and “bendability is good”.
For example, Gurley stiffness measured according to JAPAN TAPPI NO40: 2000 (Measure the angle of bending when a certain force is applied to the test piece. “Gurley method: Measure the deflection when paper is bent with a Gurley stiffness tester.” The information recording medium is also evaluated according to this method.) Is preferably 0.05 mN to 50 mN.The smaller the Gurley stiffness, the better the folding property, but it is less than 0.05 mN. When the Gurley stiffness exceeds 50 mN, the above foldability is inferior.

And when visually recognizing the authenticity determination printed layer through the transparent substrate, so that the authenticity determination can be accurately performed, that is, so that the authenticity determination printed layer can be sufficiently visually recognized through the transparent substrate. It is necessary to have “sufficient transparency”.
The recorded information on the information recording body is often printed information such as offset printing, gravure printing, inkjet printing, etc., and these recorded information can be viewed without problems even if the illumination light is scattered light. Is possible.
The “base material (base paper)” used for the information recording medium is printing paper, information paper, etc., that is, high quality paper, medium quality paper, color high quality paper, art paper, coated paper, matte coated paper, mirror coat Paper, Art Post, Kent Paper, Reprinted Paper, Carbonless Paper, Imitation Paper, Glassine Paper, Recycled Paper, White Paperboard, Colored Paperboard, Processed Paper, Advanced Printing Paper, Intermediate Printing Paper, Lower Printing Paper, Fine Coated Paper, Lightweight Printer paper such as coated paper, inkjet paper, sublimation thermal transfer paper, foam paper, carbonless paper, thermal paper, OCR paper, OMR paper, magnetic recording paper, etc. (information paper), unbleached kraft paper, semi-bleached kraft paper, coating Wood raw materials that are not coated with pigment, such as kraft paper, recyclable moisture-proof paper, paper mixed with other materials, textured paper, pearl processed paper, liner, core raw paper, etc. Chemical treatment Apply a paint on one or both sides based on uncoated paper, high-quality paper, and medium-quality paper, which is a mixture of pulp and mechanical pulp that only loosens wood raw material. Out of coated paper, etc., wood pulp as raw material, for paper that is mass-produced by machine, Kouzo, Mitsumata, Ganpi, Hemp, Dan (Mayumi) etc. as raw materials Japanese paper is often used.

Of course, in addition to the above “paper”, resin-impregnated paper, synthetic paper such as YUPO, resin film, and the like are also used. Polyethylene (PE), polypropylene (PP), expanded polypropylene (OPP), polystyrene (PS), methacrylic resin, acrylic resin, ABS resin (ABS), polyvinyl chloride, etc. are used as the resin film. In order to improve the printability and the like of the surface, a material subjected to surface modification treatment or coated with an appropriate resin can be used.
Considering the Gurley stiffness, the restoring force after bending, and the Gurley stiffness and the restoring force of the information recording laminate bonded with the pseudo-adhesive sheet, the pseudo-adhesive sheet's pseudo-adhesive strength is adjusted. To do. These Gurley stiffnesses are preferably 10 mN to 200 mN.
For full-color printing such as gravure printing, art paper, mirror-coated paper, YUPO, etc. are often used, and after various printing is performed on printing paper and information paper, further, In many cases, the surface of the information recording body is made a “strong reflecting surface” by applying a “glazing” coat or the like, and high reflected light returns from the surface of the information recording body.
If the authenticity determination print layer is arranged on such a “strong reflective surface”, unnecessary reflected light is added to the “predetermined optical effect” of the authenticity determination print layer, and accurate authenticity is ensured. Judgment will be hindered.
Therefore, in order to scatter these unnecessary reflected light, disturb the traveling direction and phase, and suppress the occurrence of the inhibition as described above, between the authenticity determination printing layer and the information recording body surface. The “adhesive layer” located is “having light scattering properties”. That is, the transparent adhesive is included in the adhesive used for the adhesive layer in order to make the “adhesive layer” “a layer having light scattering properties while maintaining adhesiveness”.
The same applies to the pseudo adhesive layer.

This “transparent fine particles”
It is a metal compound such as metal oxide, metal nitride or metal carbide and has high transparency, and has a mass average particle size of 5 μm or less, in particular, a mass average particle size of 1 μm or less. Any of which is 10 nm or more,
Or
Transparent resin powder having a mass average particle diameter of 10 μm or less and a refractive index different from that of the resin for dispersing and holding the powder, in particular, having a mass average particle diameter of 3 μm or less and dispersing the powder Refractive index different from the resin to be held, both of which are 0.1 μm or more,
Moreover,
Metal particles having a mass average particle diameter of 1 μm or less, in particular, 100 nm or less, both having a particle size of 10 nm or more, and having high transparency when dispersed in a resin. And what has predetermined | prescribed light-scattering property can be used.
Specifically, examples of the metal compound include silica, alumina, zinc oxide, and gnesium fluoride.
In particular, to make the particle size 100 nm or less,
As the vapor phase method, chemical vapor deposition method: electric furnace method, chemical flame method, plasma method, laser method, or physical vapor deposition method: gas evaporation method, resistance heating method, high frequency heating method, plasma method,
As liquid phase method, chemical liquid phase method: coprecipitation method, homogeneous precipitation method, compound precipitation method, metal alkoxide method, hydrothermal reaction method, reverse phase micelle method, supercritical fluid method, heterophasic liquid reaction method, solvent extraction Or a physical liquid phase method: a spray drying method or a freeze drying method.
Moreover, nylon powder, acrylic powder, phenol powder, silicone powder, polyethylene powder, etc. can be used as transparent resin powder.

Here, the difference in refractive index between the powder of these transparent resins and the resin for dispersing the transparent resin powder (meaning a resin used in the adhesive layer or the pseudo-adhesive layer) is 0.01. If it is above, the light scattering property by the transparent resin powder can be expressed, but if the refractive index difference is 0.1 or more, the light scattering property can be sufficiently secured, which is preferable.
The refractive index difference is preferably large, and even when a resin having a refractive index of 1.9 (refractive index difference of 0.6) is used with respect to the refractive index of resin 1.4, the mass average particle diameter of the transparent fine particles Is at most 10 μm and is much smaller than the size of the recorded information on the information recording medium, for example, several hundred μm, which is the width of the line of the character information, so that the character information is not extremely distorted, Allows visual recognition.
However, it is physically difficult to find a material system (transparent resin powder and resin system in which it is dispersed) exceeding this refractive index difference of 0.6.
As the metal fine particles, Au nanoparticles (4.4 nm), Ag nanoparticles (11.5 nm), Cu nanoparticles (11.4 nm), tungsten fine particles, nickel fine particles and the like can be used.
On the base material used for this information recording body, desired information is recorded using various printing methods, various printers, and other information recording methods.
Accordingly, when the information recording laminated body is opened and the information on the authenticity determination printed layer (reproduced image) and the information recording body is visually confirmed, when the illumination light is applied to the opened surface, first, the authenticity determination printed layer The reflected light reflects a predetermined optical effect (reflective type), and a part of the remaining light passes through the authenticity judgment printing layer, but includes a pseudo-adhesive layer including transparent fine particles behind it. Or, it becomes “scattered light” by the adhesive layer, reaches the surface of the base material of the information recording body (or the surface of the recording), reflects on the surface at various angles, It becomes “scattered light” carried as “light shade or color” and is again scattered by the pseudo-adhesive layer containing transparent fine particles or the adhesive layer.

Therefore, the “authenticity determination printing layer” used for the authenticity determination printing layer is “reflective”, so that a clear authenticity determination printing layer is generated when illumination light is first reflected by the authenticity determination printing layer. In the region other than the region where the authenticity determination print layer is provided, it is possible to prevent the recording information from being adversely affected.
“Light scattering”, which means a function of converting illumination light into “scattered light”, can be represented by “haze” (conforming to JIS K 7136), and “haze” as an adhesive layer is 20 % To 50% is desirable.
If the “haze” is less than 20%, the above-described unnecessary reflection and an unnecessary authenticity judgment printed layer reproduction image become strong, adversely affect a clear authenticity judgment printing layer reproduction image, and the “haze” is 50 If it exceeds%, it becomes difficult to visually recognize the recorded information on the information recording body.
Also, in the pseudo adhesive layer, in the state of the pseudo adhesive sheet, through the pseudo adhesive layer, it is possible to prevent the authenticity determination printing layer below from being clearly observed, and through the pseudo adhesive layer (light is transmitted). In order to prevent unauthorized duplication of the authenticity determination print layer, transparent fine particles are included in the resin material (transparent resin) used for the pseudo-adhesion layer.
The transparent fine particles may be the same as the transparent fine particles to be included in the adhesive layer, but the pseudo-adhesive layer and the adhesive layer are different in the materials used, and the thickness to be formed is different, respectively. The resin material suitable for the formation thickness is selected from the above-mentioned “transparent fine particles that can be used for the adhesive layer”.
The authenticity determination printing layer is a printing layer made of a liquid crystal material, that is, a printing layer formed of liquid crystal itself, or a printing layer formed using a printing composition containing a liquid crystal pigment.
Alternatively, the authenticity determination printing layer includes a printing layer formed using a printing composition containing a pearl pigment and further a fluorescent pigment.
As the liquid crystal material, the liquid crystal itself, or a liquid crystal pigment, a three-dimensional cross-linking substance having a liquid crystal structure having a chiral phase can be used. In particular, cholesteric liquid crystals having wavelength-selective reflected light and cholesteric liquid crystal pigments are suitable.

This three-dimensional cross-linked substance with a liquid crystal structure having a chiral phase is a nematic, smectic, or discotic structure with a chiral agent (an optically active substance) added to it, and a polymerizable group, polycondensable group, or polyaddition. A three-dimensional crosslinkable resin having a group having a possible structure, wherein a part of these groups is a polyfunctional group having two or more functional groups, for example, a three-dimensional crosslinkable having a methacryloxy group or an acryloxy group After mixing the resin, the reaction is carried out by heating under reflux, and the product is isolated and obtained. Then, a photopolymerization initiator is further melt-mixed with this product to form a coating composition, which can be directly formed on the transparent substrate by an appropriate printing method to form an authenticity judgment printing layer. it can.
As the three-dimensional crosslinkable resin, polyorganosiloxane is particularly preferable.
At this time, the orientation of the liquid crystal may be improved by applying a commonly used alignment film, or may be easily formed using an appropriate dilution solvent.
Also, this coating composition is once hot-melt coated on a polyethylene terephthalate resin film, oriented with a coating blade, and then irradiated with ultraviolet rays to crosslink the coating film. A liquid crystal pigment can be obtained by separating from above and finally pulverizing with a pulverizer.
When the liquid crystal pigment is used as a printing composition, an organic polymer, oligomer, or low molecular weight dispersant is added to the surface of the liquid crystal pigment for the purpose of improving the dispersibility in the printing composition. May be about 0.01 mg / m ² or more.
A cholesteric liquid crystal is induced by adding a small amount of an optically active substance (chiral agent) to a nematic liquid crystal, and exhibits a constant refractive index change in the liquid crystal layer by having a helical structure with a constant period with respect to the reference direction. Layers are stacked. The multilayer structure having this refractive index distribution has the property of reflecting incident light for observation at a predetermined angle after selecting the wavelength. The wavelength of the selectively reflected light is determined by the refractive index value (distribution) of the cholesteric liquid crystal and the thickness of the refractive index changing layer, that is, the interval between layers of the multilayer structure. This interval is adjusted by the molecular length of the three-dimensional crosslinkable resin, the position of the functional group, the addition amount of the chiral substance, and the like.

Accordingly, the liquid crystal itself has a refractive index distribution, and this refractive index distribution is formed by laminating the above-described thin films in multiple layers (the portion where the twist of the cholesteric liquid crystal goes around is one layer, and this layer is repeatedly present). By producing the same effect as that of the thin film, selective reflectivity is exhibited, and the wavelength of the reflected light “blue shifts” like the thin film.
However, when the number of the layers increases, “Bragg reflection” occurs, so that only a single wavelength is obtained (meaning that the width of the reflected wavelength is narrowed), and only a predetermined angle is reflected.
Therefore, the thickness of the liquid crystal pigment is set so that the refractive index distribution in the liquid crystal pigment is 3 or more and 20 or less (one layer is 200 nm to 1000 nm), and the incident angle is 0 degree to 70 degrees. It is assumed that it has necessary reflected light. If the number of layers is less than 3, the wavelength selectivity is insufficient, and if it exceeds 20, the width of the reflection wavelength is 50 nm or less, and the reflection angle is limited. Preferably, when the number is 5 layers or more and 10 layers or less, the wavelength selectivity and the width of the reflection angle are desired.
That is, when the incident angle of the light to be observed changes from 0 degree to 70 degrees, the wavelength of the selectively reflected light shifts from the visible region of 500 nm or less to the ultraviolet region. The reflection conditions need to be relaxed, and the situation can be shifted from the infrared region to the visible region of 500 nm or more by the same method. Of course, it is not necessary to emit strong reflected light over the entire range of the predetermined angle, and when the authenticity of the continuity of the color change is determined, it is set so that the continuity can be recognized.
Further, when the incident angle of light to be observed from this cholesteric liquid crystal (resined by curing or the like) changes from 0 degrees to 70 degrees, the wavelength of the light that selectively reflects is 500 nm or less. It is also preferable to laminate an ink layer that shifts from the visible region to the ultraviolet region and an ink layer that shifts from the infrared region to the visible region of 500 nm or more to form a stacked type authenticity determination printing layer.

Further, the cholesteric liquid crystal (resined by curing or the like) is made into flakes (this state is referred to as a cholesteric liquid crystal pigment) and mixed with an appropriate resin, additive, or other solvent as a printing composition. By an appropriate printing method, it can be formed on a transparent substrate to form an authenticity judgment printing layer having predetermined optical characteristics.
Also in this case, when the incident angle of the light to be observed changes from 0 degree to 70 degrees, the wavelength of the light that is selectively reflected by the liquid crystal pigment is shifted from the visible region of 500 nm or less to the ultraviolet region. The used ink layer and a color variable ink layer using a pigment that shifts from an infrared region to a visible region of 500 nm or more can be laminated to form a laminated type authenticity determination printing layer.
Various resins for ink can be used as appropriate as the resin when the liquid crystal pigment is used as a printing composition, but ionizing radiation curable resins are particularly preferred because of their high curability and physical properties. . As the ionizing radiation curable resin, aliphatic acrylates, cycloaliphatic acrylates, and acrylics such as these methacrylates can be used. Furthermore, a vinyl photopolymerizable monomer or oligomer can be used.
In addition, rosin and other natural resins, soybean oil-modified alkyd resins, and other oxidative polymerizable resins, acrylic resins, polyesters, polyvinyl acetate, melamine resins, epoxy resins, phenol resins, etc. Alternatively, a mixture of these, a copolymer, or the like can be used as appropriate.
The authenticity determination printed layer is observed as if the wavelength of the reflected light is “red shifted” when the incident angle of the observed light changes from 0 degrees to 70 degrees.
Further, pearl pigments and fluorescent pigments can also be made into printing compositions by the same technique, and are formed on a transparent substrate by an appropriate printing technique to be authenticity judgment printing layers each having predetermined optical characteristics. be able to.
At this time, the authenticity judgment printing layer containing the pearl pigment can appear the same optical characteristics as the optical characteristics of the printing layer using the cholesteric liquid crystal pigment, and the authenticity judgment printing layer containing the photopigment is By irradiating ultraviolet rays having a wavelength corresponding to the fluorescent pigment, the corresponding visible light is emitted.

Pearl pigments are transparent on the surface of natural mica flakes (mica flakes), alumina flakes, silica flakes, and borosilicate glass flakes, which are transparent materials. A transparent metal oxide thin film larger than the base material is formed, the light incident on the pigment is subjected to multiple reflection within the thin film, and the wavelength of the reflected light is made selective by the interference phenomenon.
In other words, when the light is multiple-reflected, the multiple reflected light causes an interference phenomenon, and the reflected light wavelength is transparent due to the fundamental property of light that concentrates the reflected light wavelength and increases its intensity. It is automatically determined depending on the refractive index value and thickness of the metal oxide thin film, and the “color changes” and the “change pattern” (degree of change, range of change, etc.) are also uniquely determined.
Due to the effect of this multiple reflection, the “change pattern” is as follows. That is, it enters the thin film perpendicularly (“angle 0 °” with respect to the reference direction), and is incident perpendicularly, for example, at an angle of 45 degrees, and again 45 in the opposite direction. The wavelength of light that is selectively reflected differs greatly from the case of light that reflects at a degree, and “45-degree reflected light (after 45 degrees incidence)” differs from “vertically reflected light (after perpendicular incidence)” Theoretically, the wavelength value is 0.71 times (from cos 45 ° / cos 0 ° ≈0.71).
That is, in a certain pigment, if the vertically reflected light (after normal incidence) is 700 nm (red), the 45 degree reflected light (after 45 degrees incident) becomes 490 nm (blue). A so-called “blue shift” occurs.
This is a basic property of “transparent thin film” (transparent metal oxide thin film in pearl pigment), and the color change is monotonously changed from long wavelength to short wavelength according to this theory (“blue shift”). To do.
A fluorescent pigment is a substance that absorbs energy such as ultraviolet rays, electron beams, and X-rays and emits it as visible light. For example, a material obtained by adding a trace amount of metal ions responsible for light emission such as Eu and Ce to a base ceramic crystal. Etc. In this case, metal ions that contribute to light emission are excited by absorbing energy applied from the outside (energy such as ultraviolet rays, electron beams, X-rays, of course, visible rays, infrared rays, etc.), and then the ground state. Lights when returning to. The lattice of the host crystal functions to chemically stabilize the ions by surrounding the metal ions, and to control the emission color and intensity by adjusting the crystal field and coordination environment.

In the present invention, a fluorescent pigment that emits light in the visible light region by Stokes shift is used among these fluorescent emissions. Of course, a material that emits light in the visible light region due to infrared excitation can also be used.
The principle of fluorescent emission is first explained by light absorption from the ground state (singlet state) of the phosphor (luminescent component in the fluorescent pigment) as described in the so-called Jablonsky diagram (not shown). A phosphor excited in one of the second, third excited states, etc., relaxes very quickly in a non-radiative process and shifts to the ground electronic excited state, or by intersystem crossing. Move to triplet state. The phosphor that has reached the lowest vibration state in the ground state returns to the ground state by emitting fluorescence or emitting fluorescence. The molecule in the triplet state returns to the ground state by a non-radiative process or phosphorescence.
Since the transition between singlets occurs instantaneously, the half-life of fluorescence is as short as 10 ⁻⁴ sec or less. The time required for the transition is said to be excited at 10 ⁻¹⁵ sec and then to emit fluorescence at 10 ⁻⁹ to 10 ⁻⁷ sec.
On the other hand, the transition from triplet to singlet is forbidden due to the prohibition of spin change, and spontaneous emission is difficult to occur.
Whether or not light is emitted when returning to the ground state, whether the intensity of light is strong or weak, and whether the fluorescence lifetime is long or short largely depends on the molecular structure of the phosphor material and the environment in which the molecule is placed.

The wavelength distribution of the emitted light of the phosphor material is called a fluorescence spectrum, and the fluorescence spectrum is created by plotting the fluorescence intensity relative to the fluorescence wavelength. (In actual fluorescence spectrum measurement, excitation light with a constant wavelength and intensity is used as the light source, and when dealing with phosphors, the emission spectrum is called the fluorescence spectrum.) The wavelength (energy) shown in the fluorescence spectrum ) Is equal to the energy difference from the lowest vibration energy level in the primary excited state to the preferential vibration energy level in the ground state.
If the amplitude of the fluorescence is similar to the amplitude structure of the excited state and the ground state, the wavelength of the light energy absorbed by the fluorescent dye and the wavelength emitted as fluorescence are theoretically related to the amplitude of the excitation on the longest wavelength side. Will be the same. However, in practice, the fluorescence spectrum of most fluorescent dyes shifts to the longer wavelength (low energy) side. The difference between the peak wavelengths of the excitation spectrum and the fluorescence spectrum is called the Stokes shift, and this wavelength difference is caused by the energy released in the excited state before the emission of fluorescence being converted into thermal energy.
The Stokes shift is very important in the sensitivity of fluorescence, and when detecting fluorescence, the background can be lowered because it is not affected by excitation light.
When the wavelength and intensity of incident light are constant (for example, when controlled laser light is used as a light source), the emitted fluorescence is directly proportional to the amount of fluorescent material.
Therefore, in order to make the fluorescence intensity constant, it is necessary to make the amount of the phosphor in the authenticity determination print layer to be formed constant. Of course, when the concentration of the phosphor is high, saturation occurs and the linearity is lost, resulting in a constant intensity, or the distance between the phosphors is very close, and only the vicinity of the surface is excited and the emitted fluorescence is absorbed. Therefore, rather than a large number of phosphors dispersed and present in the thickness direction of the printed layer, the uniform presence only in the vicinity of the outermost surface produces more stable light emission, so the thickness of the printed layer is It is desirable to make it 1 to 10 times, more preferably 1 to 3 times the particle size of the phosphor. When the phosphor is a dye and is dissolved in the resin forming the printing layer, it is necessary to keep the resin layer thin.

The phosphor is generally manufactured by a solid phase reaction method in which a phosphor material is fired. In this solid phase reaction method, since the raw material mixture is fired at a high temperature, the obtained fired cake is often a product in which phosphor particles are hard and aggregated. Therefore, normally, when producing the phosphor, for example, a pulverization step using a ball mill, a mortar, etc., is performed, but as a method for suppressing damage to the surface of the phosphor particles at this time, using a fluid reactor device, Substantially monodispersed phosphor-precursor particles are suspended in a flowing gas and baked to produce substantially monodispersed fluorescent particles that are not aggregated. According to this method, fluorescent particles having a size of less than 1 μm can be produced.
In addition, for example, when manufacturing a ZnGa ₂ O ₄ : Mn phosphor, the phosphor raw material before firing is prepared by a wet precipitation method, which enables firing at a low temperature and suppresses aggregation of phosphor particles. can do.
Further, for example, regarding a method for producing a phosphor having an alkaline earth aluminate-based or alkaline earth silicate-based host crystal, strontium nitrate is used as a phosphor raw material containing Sr, and a raw material mixture or suspension There is a method of forming droplets so as to have a desired particle diameter and firing the droplets. As a result, a phosphor having extremely brittle properties can be obtained and can be easily pulverized to a minute size.
As the phosphor material, a compound containing an element constituting the phosphor to be manufactured (hereinafter also referred to as “phosphor constituent element”) can be used. Examples thereof include oxides, hydroxides, carbonates, nitrates, sulfates, oxalates, carboxylates, halides, nitrides and the like containing phosphor constituent elements. When selecting the phosphor raw material, it is preferable to select in consideration of the reactivity to the obtained phosphor. Furthermore, corresponding to each phosphor constituting element constituting the phosphor, one kind of phosphor raw material may be used, or two or more kinds may be used in combination in any combination and ratio.

Further, the impurities contained in each phosphor raw material of the phosphor are not particularly limited as long as the phosphor characteristics are not adversely affected.
The weight median diameter of each phosphor material is usually 0.01 μm or more and 0.5 μm or less. For this reason, depending on the type of the phosphor material, pulverization may be performed in advance by a dry pulverizer such as a jet mill. As a result, each phosphor raw material can be uniformly dispersed in the raw material mixture, and the solid phase reactivity of the raw material mixture can be increased by increasing the surface area of the phosphor raw material, thereby suppressing the generation of impurity phases. It becomes.
For example, Ba, Ca, Sr, Zn, Mg, Si, Eu, Sm, Tm and Yb, Mn, Cr, Tb, Pr, Ce, Lu, La, Gd, Ge, Ga, Al, P, B, etc. are included. Phosphor raw materials, and further phosphor raw materials corresponding to N element, O element, halogen element, etc. are usually as anion components of the phosphor raw materials of the respective phosphor constituting elements or as components contained in the firing atmosphere. Supplied when manufacturing the phosphor.
Furthermore, in order to further improve the weather resistance such as moisture resistance, surface treatment such as coating the surface of the phosphor with a different substance may be performed as necessary.
Examples of substances that can be present on the surface of the phosphor (hereinafter also referred to as “surface treatment substances”) include organic compounds, inorganic compounds, glass materials, and the like. Examples of the organic compound include acrylic resins, heat-meltable polymers such as polycarbonate, polyamide, and polyethylene, latex, polyorganosiloxane, and the like.
Examples of inorganic compounds include magnesium oxide, aluminum oxide, silicon oxide, titanium oxide, zirconium oxide, tin oxide, germanium oxide, tantalum oxide, niobium oxide, vanadium oxide, boron oxide, antimony oxide, zinc oxide, yttrium oxide, oxide Examples thereof include metal oxides such as lanthanum and bismuth oxide, metal nitrides such as silicon nitride and aluminum nitride, orthophosphates such as calcium phosphate, barium phosphate, and strontium phosphate, and polyphosphates.
As examples of the crystal structure of the phosphor, orthosilicate crystal structures such as (Ba, Sr, Ca, Mg) ₂ SiO ₄ : Eu, Ca ₃ (Sc, Mg, Na, Li) ₂ Si ₃ O ₁₂ : Garnet-based crystal structure such as Ce, (Sr, Ca, Ba, Mg) ₁₀ (PO ₄ ) ₆ Cl ₂ : Epatite-based crystal structure such as Eu, M ₃ Si ₆ O ₁₂ N ₂ : Eu (where M is an alkali A nitride-based crystal structure such as an earth metal element). Among these, an orthosilicate crystal structure or a garnet crystal structure is preferable.

(Green phosphor)
The emission peak wavelength of the green phosphor is usually 500 nm or more, preferably 510 nm or more, more preferably 515 nm or more, and usually 550 nm or less, especially 542 nm or less, and more preferably 535 nm or less. If this emission peak wavelength λp is too short, it tends to be bluish, while if it is too long, it tends to be yellowish, and there is a possibility that the characteristics as green light will deteriorate.
In addition, the half-value width of the emission peak of the green phosphor is usually 10 nm or more and usually 130 nm or less, and is preferably adjusted as appropriate according to the application. If the full width at half maximum FWHM is too narrow, the emission intensity may decrease, and if it is too wide, the color purity may decrease.
The green phosphor has an external quantum efficiency of usually 60% or more, preferably 70% or more, and a median diameter D50 is usually about 1 μm.
As a specific example of the green phosphor, a europium activated alkali represented by (Mg, Ca, Sr, Ba) Si ₂ O ₂ N ₂ : Eu that is composed of fractured particles having a fractured surface and emits light in the green region. Examples include earth silicon oxynitride phosphors.
(Orange to red phosphor)
The emission peak wavelength of the orange to red phosphor is usually in the wavelength range of 570 nm or more, preferably 580 nm or more, more preferably 585 nm or more, and usually 780 nm or less, preferably 700 nm or less, more preferably 680 nm or less. Is preferred.
Examples of such orange to red phosphors include europium represented by (Mg, Ca, Sr, Ba) ₂ Si ₅ N ₈ : Eu that is composed of fractured particles having a red fracture surface and emits light in the red region. The activated alkaline earth silicon nitride phosphor is composed of growing particles having a substantially spherical shape as a regular crystal growth shape, and emits light in the red region (Y, La, Gd, Lu) ₂ O ₂ S: Eu And europium activated rare earth oxychalcogenide phosphors represented by the formula:

In addition, the half-value width of the emission peak of the red phosphor is usually in the range of 1 nm to 50 nm.
The red phosphor has an external quantum efficiency of usually 60% or more, preferably 70% or more, and a median diameter D50 is usually about 1 μm.
And a phosphor containing oxynitride and / or oxysulfide containing at least one element selected from the group consisting of Ti, Zr, Hf, Nb, Ta, W and Mo, A phosphor containing an oxynitride having an alpha sialon structure in which some or all of the elements are substituted with Ga elements can also be used. These are phosphors containing oxynitride and / or oxysulfide.
(Blue phosphor)
The emission peak wavelength of the blue phosphor is usually 420 nm or more, preferably 430 nm or more, more preferably 440 nm or more, and usually 490 nm or less, preferably 480 nm or less, more preferably 470 nm or less, more preferably 460 nm or less. Preferably it is.
In addition, the half-value width of the emission peak of the blue phosphor is usually in the range of 20 nm to 80 nm.
The blue phosphor has an external quantum efficiency of usually 60% or more, preferably 70% or more, and a median diameter D50 is usually about 1 μm.
Such a blue phosphor is composed of growing particles having a substantially hexagonal shape as a regular crystal growth shape, and europium represented by (Ba, Sr, Ca) MgAl ₁₀ O ₁₇ : Eu that emits light in a blue region. The activated barium magnesium aluminate-based phosphor is composed of growing particles having a substantially spherical shape as a regular crystal growth shape, and emits light in the blue region (Mg, Ca, Sr, Ba) ₅ (PO ₄ ) ₃ (Cl , F): Europium-activated calcium halophosphate phosphor expressed by Eu, and growth particles having a substantially cubic shape as a regular crystal growth shape, and emits light in a blue region (Ca, Sr, Ba) ₂ B ₅ O ₉ Cl: europium-activated alkaline earth aluminate phosphor represented by Eu, which is constituted by fractured particles having a fractured surface, blue-green Emission at a region (Sr, Ca, Ba) Al 2 O 4: Eu or _{(Sr, Ca, Ba) 4} Al 14 O 25: europium-activated alkaline earth represented by Eu aluminate-based phosphor, and the like .

(Yellow phosphor)
The emission peak wavelength of the yellow phosphor is usually in the wavelength range of 530 nm or more, preferably 540 nm or more, more preferably 550 nm or more, and usually 620 nm or less, preferably 600 nm or less, more preferably 580 nm or less. .
Further, the half-value width of the emission peak of the yellow phosphor is usually in the range of 60 nm to 200 nm.
The yellow phosphor has an external quantum efficiency of usually 60% or more, preferably 70% or more, and a median diameter D50 is usually about 1 μm.
Examples of such yellow phosphors include various oxide-based, nitride-based, oxynitride-based, sulfide-based, and oxysulfide-based phosphors.
In particular, RE3M ₅ O ₁₂ : Ce (where RE represents at least one element selected from the group consisting of Y, Tb, Gd, Lu, and Sm, and M consists of Al, Ga, and Sc. Or Ma ₃ Mb ₂ Mc ₃ O ₁₂ : Ce (where Ma is a divalent metal element, Mb is a trivalent metal element, and Mc is a tetravalent metal). A garnet-based phosphor having a garnet structure represented by AE ₂ MdO ₄ : Eu (where AE is at least one selected from the group consisting of Ba, Sr, Ca, Mg, and Zn) And Md represents Si and / or Ge.) Orthosilicate phosphors represented by the above, etc., and oxynitrides obtained by substituting part of oxygen of constituent elements of phosphors of these systems with nitrogen -Based phosphor, AEAlSi (N , O) ₃ : Ce (wherein AE represents at least one element selected from the group consisting of Ba, Sr, Ca, Mg and Zn), etc., nitride-based phosphors having a CaAlSiN ₃ structure, etc. And phosphors activated with Ce.

Furthermore, a bis (triazinylamino) stilbene disulfonic acid derivative, a bisstyryl biphenyl derivative (ultraviolet excitation 400 to 450 nm fluorescence), or the like can also be used.
In particular, the nano fluorescent material: Si nano fluorescent material, ZnS nanophosphors, YAG: Ce nanophosphors, LaPO _4: Ln nanophosphors, dye-doped silica nanoparticles phosphors, semiconductor nanoparticles, CdSe-ZnS quantum dots or the like, the Since the particle diameter is much smaller than the relief period of the hologram relief, it can be formed uniformly on the relief surface, and the formation thickness is easy to control. When the semiconductor thin film is formed by ultra-fine processing, the semiconductor thin film can be formed with high precision and an ultra-thin film, and the coherence can be improved by controlling the waveform and intensity of the emitted light.
In the fluorescent semiconductor quantum dot, the central core (core) is made of, for example, cadmium selenide (CdSe), and the outer side thereof is covered with a zinc sulfide (ZnS) coating layer (shell). Yes. By changing the diameter of the metal compound, the emitted fluorescence wavelength changes. Since the biopolymer arranged around the quantum dot has a reactive group peculiar to the biopolymer, the phosphor can be specifically arranged using the reactive group.
As the ultraviolet light-emitting phosphor, the peak of the fluorescence spectrum that is emitted when excited by ultraviolet light and returns to a lower energy level is in a wavelength region such as blue, green, and red. Examples of such ultraviolet light-emitting phosphors include Ca ₂ B ₅ O ₉ Cl: Eu ²⁺ , CaWO ₄ , ZnO: Zn, Zn ₂ SiO ₄ : Mn, Y ₂ O ₂ S: Eu, ZnS: Ag. YVO ₄ : Eu, Y ₂ O ₃ : Eu, Gd ₂ O ₂ S: Tb, La ₂ O ₂ S: Tb, Y ₃ Al ₅ O ₁₂ : Ce, etc. Several of these are mixed and used at an appropriate ratio.
These have peaks in the fluorescence spectrum outside the blue, red, and green wavelength regions. Further, the weight ratio of the ultraviolet fluorescent substance in the ink is not limited as long as the fluorescence can be detected by the light receiving element of the reading head.

On the other hand, some infrared light emitting phosphors have the property of receiving visible light having a wavelength λ2 upon receiving excitation light having a wavelength λ1, and having the properties of λ1 = λ2 and λ1> λ2. Examples of such infrared light emitting phosphors include YF ₃ : Yb, Er, ZnS: CuCO, and the like.
A pseudo adhesive layer is provided on the transparent base material and on the authenticity determination print layer so as to cover the authenticity determination print layer.
Pseudo-adhesive layer that can be peeled is adjusted to facilitate adhesion to the surface of the information recording medium and re-peeling to the transparent base material, and is a mixture of adhesive main agent, adhesive strength modifier, additives, etc. Can be used.
At this time, depending on whether the [adhesive strength between the pseudo-adhesive layer and the authenticity judgment printing layer] is made stronger or weaker than the [adhesion strength between the transparent substrate and the authenticity judgment printing layer] The appearance (appearance) of the authenticity judgment printed layer at the time of re-peeling is different.
If the adhesive strength between the pseudo-adhesive layer and the authenticity judgment printing layer is increased, the authenticity judgment printing layer is embedded in the pseudo-adhesion layer in the state of re-peeling to form a transparent base. It peels from the material and appears on the outermost surface of the pseudo-adhesive layer in such a manner that the interface with the transparent substrate is exposed flush.
The surface of the pseudo-adhesive layer at this time is a so-called “mirror surface”, and stable reflected light (reflection angle, reflection intensity, and reflection wavelength is stable with respect to the illumination light at the time of authenticity determination. Meaning that it is highly reliable.)

For this reason, the surface of the transparent substrate in contact with the authenticity determination printing layer has an average surface roughness Ra of 0.3 μm or less, preferably 0.1 μm or less.
If the adhesive strength between the pseudo-adhesive layer and the authenticity-determined print layer is weakened, the authenticity-determined print layer remains on the transparent substrate side during re-peeling, and the authenticity-determined print layer and the pseudo-adhesive layer Peeling occurs at the interface, and the interface between the authenticity determination printed layer and the pseudo adhesive layer is exposed as the outermost surface of the authenticity determination print layer.
The outermost surface of the authenticity determination printing layer is the “printing layer surface” when the authenticity determination printing layer is formed on the transparent substrate, and further, the “peeling” with the pseudo-adhesion layer formed thereon. "Interface" (meaning a surface that appears due to physical separation of two layers), and its surface is not a "mirror surface" but a "rough surface", and its optical properties are somewhat unstable. This is likely to reduce the reliability of authenticity determination.
For this reason, when weakening the adhesive strength between the pseudo-adhesive layer and the authenticity determination print layer, when forming the authenticity determination print layer on the transparent substrate, the average surface roughness Ra of the surface is set. It is preferable to perform mirror finishing so as to be 0.3 μm or less.
For the mirror finish, a mirror roll brace heated to 60 ° C. to 100 ° C. or a mirror flat plate press can be used.
Examples of the adhesive main component that is a component of the pseudo adhesive layer include natural rubber, styrene butadiene rubber, polyvinyl acetate, and the like, or a mixture thereof. By adjusting the mixing ratio of these adhesive main ingredients as appropriate, the adhesion to the transparent base material is maintained while maintaining the self-adhesion between the pseudo-adhesion layers (meaning the adhesion between the adhesion surfaces of the same material). Make sex smaller than self-adhesion.
Or, change the mixing ratio, and dare to make the adhesion with the transparent substrate larger than the self-adhesive property, and re-peel at the interface between the pseudo adhesive layers, not the interface between the transparent substrate and the pseudo adhesive layer. You can also.

The adhesive strength adjusting agent is mixed to adjust the adhesive strength of the adhesive main agent, and an acicular substance, a fine particulate substance, or a mixture thereof is used.
As additives, fine particle waxes for improving slipperiness such as handling property, conveyance performance in various processing machines or blocking resistance, ultraviolet absorbers for preventing deterioration, and the like may be added.
Further, a nonionic surfactant may be added as an antifoaming agent, and silica or the like may be added as an antifoaming aid.
The formation thickness of such a pseudo adhesive layer is 5 μm to 50 μm after drying.
However, when the information recording laminate is opened, the transparent base material and the adhesive layer are laminated on one side of the left and right regions across the fold of the information recording body, and the authenticity determination printing layer is arranged on the other side. Or a pseudo-adhesive layer containing one or more layers, or a transparent substrate and an adhesive layer are laminated on one side, and only a pseudo-adhesive layer is laminated on the other side. Therefore, in order not to make a difference in the visibility of the information on the left and right areas (when it is assumed that the transparency of the transparent base material is very high) and the thickness of the adhesive layer described above The thickness of the pseudo-adhesion layer is the same, the type and content of the transparent fine particles to be included are the same, and the degree of light scattering (for example, the value of “haze” is the same) is the same. It is also suitable.
If the formation thickness is less than 5 μm, the adhesive force with the surface of the information recording body is insufficient, and the information recording laminate is formed by subjecting the information recording body to a folding process such as folding in half. When opening, the pseudo-adhesion layer and the surface of the information recording body are partially peeled off, and air enters between the pseudo-adhesion layer and the surface of the information recording body, and the visibility of recorded information on the information recording body is significantly reduced. Will be allowed to. Moreover, even if it exceeds 50 μm, the visibility of the recorded information on the information recording body is deteriorated.

Examples of the resin used for the pseudo-adhesion layer further include a polyethylene resin, an ethylene / methacrylic acid copolymer resin, an ionomer resin, an ethylene / ethyl acrylate copolymer resin, a mixture system of a polyethylene resin and an ionomer resin, and the like.
In particular, it is preferable to use a glass transition temperature of 25 ° C. or higher and a Vicat softening temperature of 45 ° C. or higher to improve the releasability from the transparent substrate and the storage stability. This is preferable.
Here, the Vicat softening temperature is a temperature measured by ASTM D1525-70. When a gauge with a load of 1 kg is placed on the plastic surface and heated, the needle tip of the gauge enters 1 mm into the plastic. It is expressed in terms of temperature and is synonymous with the Vicat softening point.
As another example, when a polypropylene film is used as a transparent substrate, the pseudo-adhesion layer laminated thereon is made of a copolymer of propylene and α-olefin and crystalline polybutene (polybutene-1 homopolymer). A mixture is preferred.
Furthermore, the pseudo-adhesive layer is also preferably a formed layer that is adjusted so that the elongation at break of the formed layer is 350% or more (measurement of elongation at break conforms to JIS K-6760).
When the elongation at break is less than 350%, it means that the information recording laminated body integrated by heating and pressing is peeled and unfolded (opened) with the pseudo adhesive sheet sandwiched between the information recording surfaces of the information recording body. .) At this time, the pseudo-adhesive layer is torn apart within the layer and partially adheres to the developed transparent substrate, which is likely to be “unevenness”, and there is a risk of reducing the sharpness of the reproduced image of the authenticity determination printed layer. .

The 180 degree peel strength at the interface between the transparent substrate and the pseudo-adhesive layer is preferably 20 to 150 g / 50 mm, more preferably 20 to 100 g / 50 mm (peel strength measurement is According to JIS Z-0237, the peeling speed is 500 mm / min.). By doing so, when opening the information recording laminate, it can be smoothly peeled off at the interface between the transparent substrate and the pseudo-adhesive layer, and the occurrence of tearing in the layer can be suppressed.
If the peel strength is less than 20 g / 50 mm, spontaneous peeling is likely to occur, and there is a possibility that the information recording laminate folded in half during mailing or delivery may open, and this peel strength exceeds 150 g / 50 mm. If an information recording medium with a strong "peeling curl" or a weak surface strength is used, the surface of the information recording medium will be peeled off when the information recording laminate is opened, and an authenticity judgment printed layer reproduction image May be distorted and unclear, and the readability of the information itself may be reduced.
Next, an adhesive layer is provided on the surface opposite to the side on which the authenticity determination printing layer is provided on the transparent substrate.
In this case, the adhesive layer is not positioned behind the authenticity determination print layer (between the authenticity determination print layer and the surface of the information recording body) in the authenticity determination. The agent layer has light scattering properties and at the same time has a high refractive index and can increase the refractive index of the adhesive layer. Transparent fine particles (titanium dioxide pigment: refractive index 2.70, iron oxide pearl pigment: Refractive index 3.0, etc.) can be mixed in relatively large amounts.
Transparent resins that can be used for the adhesive layer include polymethyl methacrylate (refractive index n = 1.49), polybutyl acrylate (n = 1.44), polyvinylidene (n = 1.42), methyl cellulose (n = 1.50), a fluororesin (n = 1.32), a melamine resin (n = 1.56), or a mixture thereof can be used as appropriate.

Then, the transparent fine particles described above are appropriately selected for the transparent resin in consideration of the refractive index of the transparent resin, the type of dilution solvent, the viscosity, the forming method, the forming thickness, and the like. Include. Specifically, the transparent fine particles are added to a transparent resin within a range of 10% to 40% in consideration of light scattering and transparency, and also cohesion of the adhesive layer. To do.
If it is less than 10%, it is difficult to obtain light scattering properties, and if it exceeds 40%, it means necessary transparency (transparency necessary for visually recognizing recorded information. If more transparent fine particles are contained than necessary, it is transparent. The multiple reflection between the fine particles increases, making it difficult to obtain the recorded information.
When the transparent fine particles are included in the transparent resin, in order to suppress the secondary aggregation of the transparent fine particles so that the fine particles are uniformly dispersed throughout the resin, not only the dispersion with a rotary blade type such as a resolver, Dispersion by glass beads, ball mill using steel beads, or kneader is performed for 1 to 3 hours.
Further, in order to further improve the uniform dispersibility of the transparent fine particles, surface activation treatment such as silane coupling treatment on the surface of the transparent fine particles, addition of various surfactants, and the like are also suitable. Furthermore, a plasticizer and other additives can be added as necessary.
These adhesives are dissolved in a solvent or water as appropriate, and coating methods such as gravure printing, curtain coating methods, nozzle methods, silk printing, and solvent-free hot melt methods are used. The relief authenticity determination printed layer can be provided on the authenticity determination printed layer relief with a formation thickness after drying of 5 μm to 50 μm.
If the thickness is less than 5 μm, the adhesive force with the surface of the information recording body is insufficient, and the adhesive and the surface of the information recording body are opened when the information recording laminate is opened after the information recording body is folded in two. Is partially peeled off, and air enters between the adhesive and the surface of the information recording body, and the visibility of the authenticity-determined print layer reproduction image is remarkably lowered. On the other hand, if the thickness exceeds 50 μm, the thickness of the information recording laminate is unnecessarily increased, and the visibility of recorded information on the information recording body is lowered.

A transparent resin (meaning an adhesive) used for the above-described adhesive layer is appropriately selected from those having strong adhesiveness to the transparent base material and the surface of the information recording body.
180 degree peel strength between the adhesive layer and the information recording medium (peel strength measurement is according to JIS Z-0237, peel rate is 500 mm / min) is 200 g / 50 mm to 2000 g / 50 mm, particularly 500 g / It is desirable to be 50 mm or more. If it is less than 200 mm / 50 mm, during mailing or delivery, peeling occurs between the surface of the information recording body and the adhesive layer, and a phenomenon such as air entering the portion occurs, thereby hindering confirmation of confidential information and the like. In particular, this problem is likely to occur at the folded portion.
In addition, when transparent fine particles are mixed into the adhesive layer or pseudo adhesive layer, the surface of the adhesive layer or pseudo adhesive layer has a depth of 0.5 μm to 3 μm while maintaining transparency and predetermined light scattering properties. When a method for producing a laminated body with an information recording body by sandwiching it in an information recording body folded in half by forming fine irregularities of the adhesive layer or pseudo-adhesive layer, In addition to preventing the transparent resin from protruding from between the information recording laminates, when the pseudo adhesive sheet is manufactured in a roll shape, the authenticity determination printing layer from either side of the pseudo adhesive sheet Visibility can be reduced, and blocking of the pseudo-adhesive sheet in a roll shape can be prevented. And since this fine unevenness | corrugation lose | disappears when it affixes on an information recording body, it is suitable.
Furthermore, the same fine unevenness | corrugation is 0.5 to 5% of incompatible materials, such as higher alcohols, such as a butanol, and a quaternary amine, in the composition for forming an adhesive bond layer or a pseudo-adhesion layer. It can also be made to appear by utilizing the “resin layer whitening phenomenon (brushing phenomenon)”.
Because of this brushing phenomenon, the transparency of the adhesive layer and the pseudo-adhesive layer itself can be greatly reduced, and unevenness with a height of 0.1 μm to 3.0 μm can be formed on the surface. It becomes easy to conceal the presence of the authenticity determination printing layer sandwiched between the layers.
In addition, when the information recording laminate is formed, both layers are melted again by heating and pressurization, and after being cooled to a transparent layer, the whitening phenomenon disappears. When the recording laminate is opened and the information on the information recording body and the authenticity judgment printed layer are visually confirmed, the information and the like can be reliably read through both transparent layers.
In addition, as the layer configuration order of the pseudo adhesive sheet, the configuration order of the pseudo adhesive layer, the authenticity determination printing layer, the transparent base material, and the adhesive layer has been described above. It can also be set as a sex determination printing layer and an adhesive layer.
At this time, regarding the adhesive strength between the authenticity determination printed layer and the adhesive layer, and the relationship between the authenticity determination print layer and the transparent substrate, the authenticity determination print layer and the pseudo adhesive layer described above are used. It is necessary to realize the same setting conditions as the relationship between the adhesive strength and the transparent substrate.
However, in this case, the surface to be confirmed when authenticity determination of the authenticity determination print layer is an interface between the transparent base material and the authenticity determination print layer, and is always “mirror surface”. The “mirror finish” process after the sex determination printing layer is formed is not necessary.

According to the present invention,
Information recorded on the information recording body as an information recording laminate by pasting at least a folded information recording body by thermocompression bonding through a pseudo adhesive sheet having an authenticity determining printing layer, and its authenticity determining printing layer , The pseudo-adhesive surface of the information recording laminate is peeled off, that is, the authenticity judgment printed layer can be observed only after opening the fold, and the information can be confirmed. An information recording laminate can be provided, and the attention of the recipient who has received the information recording laminate can be sufficiently raised to raise interest and improve its “opening ratio”, and the information recording laminate It is possible to provide a pseudo-adhesive sheet that can be easily “determined” that the body has been sent from a valid sender, and an information recording laminate using the pseudo-adhesive sheet.

It is sectional drawing of the pseudo-adhesive sheet which shows one Example of this invention. It is sectional drawing of the pseudo-adhesive sheet (The authenticity determination printing layer is provided between the transparent base material and the adhesive bond layer) which shows another Example of this invention. FIG. 6 is a cross-sectional view of a pseudo-adhesive sheet (a pseudo-adhesive layer of the pseudo-adhesive sheet having the configuration shown in FIG. 1 and an adhesive layer including transparent fine particles) showing still another embodiment of the present invention. FIG. 6 is a cross-sectional view of a pseudo-adhesive sheet (a pseudo-adhesive layer of the pseudo-adhesive sheet having the configuration shown in FIG. 2 and an adhesive layer including transparent fine particles) showing still another embodiment of the present invention. The pseudo-adhesive sheet of the present invention shown in FIG. 1 (the layer structure inside the sheet is omitted) is inserted into an information recording body folded in half with the surface having the information recording area inside, and heated and heated. FIG. 3 is a cross-sectional view of an information recording laminate that has been pressed and pressed. FIG. 3 is a cross-sectional view of the information recording laminate after the information recording laminate is peeled and opened at the interface between the pseudo adhesive layer of the pseudo adhesive sheet and the transparent substrate. {In the figure, the dotted line indicates the position of the crease (boundary line) when the information recording medium is folded in two. }

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Pseudo adhesive sheet)
As described above, the pseudo adhesive sheets A1 to A4 (see FIGS. 1 to 4) of the present invention are as follows.
An authenticity determination printing layer 2 and a pseudo adhesive layer 3 are formed on one surface of the transparent substrate 1 so as to cover the authenticity determination printing layer, and an adhesive layer is formed on the other surface of the transparent substrate 1. 4 (see A1),
The pseudo-adhesive layer 3 is formed on one surface of the transparent substrate 1, and the authenticity determination print layer 2 and the authenticity determination print layer are covered on the other surface of the transparent substrate 1 so as to cover the authenticity determination print layer 2. 4 (see A2),
On one surface of the transparent base material 1, the authenticity determination printing layer 2 and the pseudo-adhesion layer 3 including [transparent fine particles P <b> 1] 5 are formed so as to cover the authenticity determination printing layer. The adhesive layer 4 containing [transparent fine particles P2] 6 is formed on the other surface (see A3),
A pseudo adhesive layer 3 containing [transparent fine particles P1] 5 is formed on one surface of the transparent substrate 1, and the authenticity determination print layer 2 and its authenticity determination print are formed on the other surface of the transparent substrate 1. The adhesive layer 4 containing [transparent fine particles P2] 6 is formed so as to cover the layer (see A4).
(Transparent substrate or authenticity judgment printing layer)
As the transparent substrate 1, the thickness can be reduced, and the mechanical strength, the authenticity determination printing layer 2, the pseudo-adhesion layer 3, or the treatment or processing when providing the adhesive layer 4, Has physical properties suitable for adhesion processing to the information recording body 7 or processing by various processing machines such as folding processing, and has appropriate adhesiveness and removability to the pseudo-adhesive layer 3. It is preferable to use the transparent substrate 1 having the same. (See Figures 2-5.)
The transparent substrate 1 is not limited because it depends on the processing method, but is preferably a film or sheet plastic.

For example, various plastic films such as polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol, polysulfone, polyethylene, polypropylene, polystyrene, polyarylate, triacetyl cellulose (TAC), diacetyl cellulose, and polyethylene / vinyl alcohol can be exemplified. .
The thickness of the transparent substrate 1 is usually 5 to 100 μm, but is preferably 5 to 25 μm from the viewpoint of its handleability.
The authenticity determination printing layer 2 is a printing layer made of a liquid crystal material, that is, a printing layer composed of liquid crystal itself, a printing layer formed using a printing composition containing a liquid crystal pigment, or a pearl pigment. It is comprised by the printing layer formed using the printing composition containing the fluorescent composition containing the printing layer formed using the printing composition containing. (See FIGS. 1-4)
Cholesteric liquid crystals and cholesteric liquid crystals used as the basis of cholesteric liquid crystal pigments include cholesterol halides, monocarboxylic acid cholesterol esters, monocarboxylic acid sitosterol esters, benzoic acid derivative cholestanol esters, dibasic acid dicholesteryl esters, Examples include main chain type liquid crystal polymer compounds, side chain type liquid crystal polymer compounds, and rigid main chain type liquid crystal polymer compounds.
More specifically, for example, cholesteryl chloride, cholesteryl acetate, cholesteryl nonanoate, methyl carbonate, ethyl cholesterol, cholesteryl p-methoxybenzoate, sitosteroyl benzoate, sitosteroyl p-methyl benzoate, cholestanyl benzoate, 10, 12- Docosadiin dicarboxylic acid dicholesteryl ester, 8,12-eicosadicarboxylic acid dicholesteryl ester, 10,12-pentacosadiin dicarboxylic acid dicholesteryl ester, dodecadicarboxylic acid dicholesteryl ester, 12,14-hexacosadiin dicarboxylic acid Dicholesteryl ester, 4- (7-cholesteryloxycarbonylheptyloxy) phenoxyoctanoic acid cholesteryl ester, L-glu Min acid -γ- benzyl / L-glutamate -γ- dodecyl copolymers and the like.

Further, cholesteryl formate, cholesteryl acetate, cholesteryl propionate, cholesteryl butyrate, cholesteryl pentanate, cholesteryl hexanate, cholesteryl heptanoate, cholesteryl octanate, cholesteryl nonanoate, cholesteryl decanate, cholesteryl decanate (cholesteryl laurate) Cholesteryl myristate, cholesteryl palmitate, cholesteryl stearate, cholesteryl oleate, cholesteryl oleyl carbonate, cholesteryl linoleate, cholesteryl 12-hydroxystearate, cholesteryl mercaptan, cholesterol chloride, cholesteryl fluoride, cholesteryl bromide, cholesteryl iodide, etc. Can be mentioned.
Preferably, a mixture of three kinds of alkyl cholesterol (for example, cholesterol nanoate) and cholesteryl halide (for example, cholesterol chloride) cholesteryl oleyl carbonate is used, and these three types of liquid crystals are used so as to be used at room temperature. Is common.
In addition, it is not limited to the compound shown here, Moreover, these cholesteric liquid crystal compounds can be used 1 type or in mixture of 2 or more types.
As a liquid crystal compound in which a chiral compound is added to a nematic liquid crystal compound, 4-substituted benzoic acid 4′-substituted phenyl ester, 4-substituted cyclohexanecarboxylic acid 4′-substituted phenyl ester, 4-substituted cyclohexane Carboxylic acid 4′-substituted biphenyl ester, 4- (4-substituted cyclohexanecarbonyloxy) benzoic acid 4′-substituted phenyl ester, 4- (4-substituted cyclohexyl) benzoic acid 4′-substituted phenyl ester, 4- (4- Substituted cyclohexyl) benzoic acid 4'-substituted cyclohexyl ester, 4-substituted 4'-substituted biphenyl, 4-substituted phenyl 4'-substituted cyclohexane, 4'-substituted cyclohexane, 2- (4-substituted phenyl) -5-substituted pyridine Etc. are used.

Further, a liquid crystal compound having a cyano group or a fluorine atom at least at one end of the molecule and various suitable chiral agents added to these liquid crystal compounds are used. As the chiral compound, “CB-15”, “C-15” (manufactured by BDH), “CM-21”, “CM-22”, “CM-19”, “CM-20”, “CM” (Above, manufactured by Chisso Corporation), "S1082", "S-811", "R-811" (above, manufactured by Merck & Co., Inc.), and the like.
Furthermore, a three-dimensionally crosslinkable liquid crystalline polymerizable monomer molecule or polymerizable oligomer molecule can be used. A layer containing cholesteric liquid crystal molecules can be obtained by adding an arbitrary chiral agent to a predetermined polymerizable monomer molecule or polymerizable oligomer molecule.
Examples of the three-dimensionally crosslinkable monomer molecule include a mixture of a liquid crystal monomer and a chiral compound as disclosed in, for example, JP-A-7-258638 and JP-T-10-508882. As a more specific example, for example, liquid crystalline monomers represented by the following general chemical formulas (1) to (11) can be used. In the case of the liquid crystalline monomer represented by the general chemical formula (11), X is preferably an integer in the range of 2 to 5.

  Moreover, as a chiral agent, the chiral agent as shown, for example by the following general chemical formula (13)-(16) can be used. In the case of the chiral agent represented by the general chemical formulas (12) and (13), X is preferably an integer in the range of 2 to 12, and in the case of the chiral agent represented by the general chemical formula (14), X Is preferably an integer in the range of 2-5.

Furthermore, when an oligomer molecule is used, a cyclic organopolysiloxane compound having a cholesteric phase as disclosed in, for example, JP-A-57-165480 can be used. For example, a cholesteric liquid crystal layer can be obtained by adding about several to 10% of a chiral agent to polymerizable monomer molecules or polymerizable oligomer molecules.
Further, a cholesteric liquid crystal having no cholesterol group in which a group having an asymmetric carbon is introduced into a terminal group of a nematic liquid crystal obtained by organic synthesis, or a mixed liquid crystal in which a Schiff nematic liquid crystal is added to a cholesterol derivative is also used. Furthermore, halogen substitution products and esterified products of natural cholesterol (cholesteryl benzoate, cholesteryl chloride, cholesteryl oleate, cholesteryl nonanoate, and the like are also suitable.
Particularly preferably, it has a liquid crystal structure having a chiral phase formed by adding a chiral substance to a nematic, smectic, or discotic structure, and has a polymerizable group, a polycondensable group, or a group capable of polyaddition. For example, an oriented three-dimensional cross-linking substance having a bifunctional or higher polyfunctional group such as a methacryloxy group or an acryloxy group can be used. As the three-dimensional crosslinkable resin, polyorganosiloxane is most suitable because of its performance stability and workability.
Both of the above are mixed and reacted by heating under reflux to isolate the product. The resulting product is further melt-mixed with a photopolymerization initiator to form a coating composition, and this coating composition is hot-melt coated on the transparent substrate 1 at a thickness of 3 μm to 30 μm. Then, the coating film is cross-linked by irradiating with ultraviolet rays to obtain an authenticity judgment printing layer 2.

Moreover, the crosslinked coating film is formed on the resin film, the coating film is separated from the resin film, and pulverized into a liquid crystal pigment. That is, once formed into a “film” shape (resin layer shape), it is formed into a flake shape through a fragmentation process such as crushing and cutting.
This becomes a liquid crystal pigment.
This liquid crystal pigment is dispersed and mixed in an ionizing radiation curable resin or an oxidation polymerizable resin, and an appropriate polymerization initiator, a solvent, or the like is added to form a coating composition. The film is formed with a thickness, and the coating film is cross-linked to obtain an authenticity judgment printing layer 2.
As the ionizing radiation curable resin, the following acrylic resins can be used. Namely, acrylic acid, aliphatic acrylate, allyl acrylate, allylated cyclohexyl acrylate, benzyl acrylate, bisphenol A diacrylate, epichlorohydrin modified bisphenol A diacrylate, ethylene oxide modified bisphenol A diacrylate, epichlorohydrin / ethylene oxide modified bisphenol A diacrylate , Ethylene oxide modified bisphenol S diacrylate, ethylene glycol acrylate, propylene glycol acrylate, butylene glycol acrylate, neopentyl glycol acrylate, butoxyethyl acrylate, epichlorohydrin modified aliphatic acrylate, cycloaliphatic acrylate, N, N- Dimethylaminoethyl acrylate, N-diethylaminoethyl acrylate, pentaerythritol tetraacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, dipentaerythritol monohydroxypentaacrylate, alkyl-modified dipentaerythritol pentaacrylate, alkyl-modified dipentaerythritol tetraacrylate, alkyl-modified di Pentaerythritol triacrylate, caprolactone modified pentaerythritol hexaacrylate, ethylene oxide modified bisphenol A diacrylate, ditrimethylolpropane tetraacrylate, bisphenol epoxy acrylate, glycerol acrylate, glycidyl acrylate, oligoester acrylate, polyester Acrylate, phosphate type acrylate, ethylene oxide-modified phthalic acid acrylates, ethylene oxide-modified phthalic acid acrylate, epichlorohydrin-modified phthalic acid acrylate or urethane acrylate can be used.

Moreover, the following methacrylic type can also be used, and specifically, the corresponding methacrylic acid and the corresponding methacrylic acid ester listed above as the acrylic type can be used. In addition, as the ionizing radiation curable resin, a vinyl-based photopolymerizable monomer or oligomer such as N-vinylpyrrolidone can be used. As the ionizing radiation curable resin, one type or two or more types of monomers or oligomers of the substances described above can be used.
When an ionizing radiation curable resin is used as a resin and ultraviolet rays are used as ionizing radiation, a known photopolymerization initiator is blended. As the photopolymerization initiator, benzophenone-based, benzyl-based, benzoin-based, benzoic acid-based, thioxanthone-based, phenyl ketone-based, oxime-based organic low-molecular compounds, oligomers, or high-molecular compounds can be used. When the blending ratio is excessive, the degree of polymerization decreases. When the blending ratio is too small, the polymerization rate and the polymerization rate decrease. In any case, the drying characteristics and the film strength after printing. Etc. are preferably used at a mass ratio of 0.3 to 20 parts with respect to 100 parts of ionizing radiation curable resin which is a resin.
This resin is diluted with an appropriate dilution solvent, and formed on the transparent substrate 1 by an appropriate printing method, offset printing method, gravure printing method, screen printing method, intaglio printing method, etc., and an authenticity judgment printing layer 2.

When the incident angle of the illumination light for observing the authenticity determination printed layer 2 is changed from 0 degree to 70 degrees, the wavelength of the selectively reflected light is changed from the red region in the visible region to the blue region. Therefore, at the time of authenticity determination, a person who performs authenticity determination determines that it is “authentic” by confirming this shift state.
Furthermore, when the incident angle of the illumination light for observation is changed from 0 degree to 70 degrees, the wavelength of the selectively reflected light is made of a liquid crystal that shifts from the visible region to the ultraviolet region of 500 nm or less. When the print layer and the print layer made of liquid crystal whose wavelength of selectively reflected light is shifted from the infrared region to the visible region of 500 nm or more are laminated to form an authenticity determination print layer 2, the authenticity determination print layer 2, when the incident angle of the illumination light for observation is changed from 0 degree to 70 degrees, the wavelength of the selectively reflected light shifts from the blue region of the visible region to the red region (hereinafter referred to as this). The situation is also referred to as “red shift”.) Therefore, in authenticity determination, the person who performs authenticity determination determines that it is “authentic” by confirming this shift condition.
In the case of liquid crystal pigments, the particle size is larger than the particle size of pigment particles used in general lithographic inks and letterpress inks. Or if the amount is too small, the color rendering effect as a pigment is reduced. Therefore, the amount is preferably 5 to 100 parts with respect to 100 parts of ionizing radiation curable resin as a resin. It is preferable to use at a mass ratio.
The following can be used for the oxidation polymerizable resin as a resin when a liquid crystal pigment is used as a coating composition.
That is, natural resins such as rosin, cured rosin, rosin ester, rosin-derived maleic acid resin, or natural resin derivatives such as rosin-derived fumaric acid resin, phenol resin, rosin-modified phenol resin, rosin-modified xylene resin, fatty acid-modified xylene resin, A synthetic resin such as an oil-modified alkyd resin or soybean oil-modified alkyd resin can be used.

For the purpose of adjusting the viscosity and adjusting the drying speed, the above oxidatively polymerizable resin is usually blended with an oil component. Specific oils are obtained by processing vegetable oils such as linseed oil, linden oil, jute oil, hemp seed oil, safflower oil, soybean oil, palm oil, tall oil, castor oil, or cottonseed oil, or vegetable oil. Polymerized oils, processed oils such as maleic acid, or mineral oils such as machine oil or spindle oil can be used.
When using the oxidation polymerizable resin, various solvents or additives can be blended in addition to the oil. As the solvent, aliphatic hydrocarbon-based, aromatic hydrocarbon-based, alcohol-based, glycol-based, ester-based, or ketone-based solvents can be used. In addition, plasticizers (phthalate ester, adipic acid ester, or sebacic acid ester, etc.), wax (carnauba wax, wax, paraffin wax, polyethylene wax, polytetrafluoroethylene, etc.), dryer (cobalt, etc.) Or manganese metal soap), dispersant (polymer or low molecular surfactant, etc.), thickener (aluminum chelate, etc.), antifoaming agent (silicone, etc.), antioxidant (phenolic or An oxime type or the like), a leveling agent (silicone or the like), or an ultraviolet absorber (benzophenone type or triazole type or the like) can be used.
When using an oxidatively polymerizable resin as a resin, the vehicle component mainly composed of an oxidatively polymerizable resin, an oil component, and a solvent component generally has a higher acid value than an ionizing radiation curable resin. Since the compound itself exhibits a dispersant effect, the blending ratio of the liquid crystal pigment can be increased. However, since the liquid crystal pigment has a large particle size, if it is excessively mixed, the fluidity of the ink may be poor or the curability may be lowered. If it is too small, the color rendering effect as a pigment may be reduced. Preferably, it is preferably used in a mass ratio of 5 to 150 parts with respect to 100 parts of the total amount of the oxidatively polymerizable resin as a resin and the oil.
Further, as a resin when a liquid crystal pigment is used as a coating composition, acrylic resin, cellulose resin, polystyrene, polyester, polyvinyl acetate, melamine resin, epoxy resin, phenol resin, or a mixture or copolymer thereof Etc. can be used as appropriate.

Pearl pigments include natural mica flakes (mica flakes) coated with metal oxides such as titanium oxide and iron oxide, synthetic alumina flakes (particle size: 1-30 μm, thickness: 0.5 μm-5 μm), synthesis Silica flakes (particle size 5-30 μm, thickness 0.5 μm-5 μm), borosilicate glass flakes coated with titanium oxide (particle size 10-30 μm, thickness 0.5 μm-5 μm), synthetic mica flakes (aluminum oxide, oxidized) A pigment in which a metal oxide such as titanium oxide or iron oxide is coated (coated with 50 nm to 400 nm) on, for example, magnesium, silicon dioxide, or a fluorine compound.
Artificially synthesized materials are preferable because they have a sharp particle size distribution with little variation in particle size, a smooth surface, and a uniform shape.
Moreover, if the thickness of the bright metal thin film formed on the flake surface is not a predetermined thickness, the wavelength of light reflected to a predetermined reflection angle is shifted. For this reason, the variation in the thickness of the transparent metal thin film on the flakes needs to be within ± 20%, and further within ± 10%. At 20%, the wavelength variation is almost 17%. At 10%, it is about 10%.
Of course, this wavelength changes due to the variation in the refractive index of the transparent metal thin film, but the accuracy of formation by the liquid phase method or the CVD method (compound vapor deposition method) is very high, which affects the predetermined optical effect. There is not much variation.
When this transparent metal thin film is made of titanium dioxide (the refractive index changes depending on the degree of oxidation) and the thickness is 90 nm to 100 nm, the vertical reflected light becomes the infrared region, and the color changes even when observed from the vertical direction. Although it cannot be recognized, red reflected light (“red”: 620 nm to 750 nm) is exhibited by reflected light of 60 to 70 degrees, and thus red can be recognized in oblique observation.
By using this pearl pigment as a coating composition and using the appropriate formation method as the authenticity judgment printing layer 2, it is selective when the incident angle of the illumination light to be observed changes from 0 degrees to 70 degrees. Thus, it is possible to form the authenticity determination print layer 2 in which the wavelength of the light reflected on the light shifts from the red region in the visible region to the blue region.

Also in the pearl pigment, for example, when the thickness of the titanium dioxide of the transparent metal thin film is 300 nm to 330 nm, the vertical reflected light becomes blue (“blue”: 450 nm to 495 nm), and when the observation angle is increased, Since the reflected light enters the ultraviolet region, the color can no longer be recognized. Therefore, the reflected light is visible from the infrared region separately from the printed layer made of such a pearl pigment. By laminating a printing layer using a pearl pigment that changes to the red region of the light region to form an authenticity judgment printing layer 2, the incident angle of illumination light for observing this is changed from 0 degrees to 70 degrees. When changing, it is possible to form the authenticity determination printing layer 2 in which the wavelength of the selectively reflected light is shifted from the blue region of the visible region to the red region.

The light to be observed is incident on the printed layer positioned on the upper layer when viewed from the observation side, and the reflected light having the selected wavelength and the light transmitted through the layer (this light has no wavelength selectivity. The light that passes through the flakes will pass through the optical object and will not be subject to interference other than a reduction in intensity.) Only the light that has passed through the layer is another The light reaches the print layer and is divided into reflected light having a wavelength selected in the layer and light that also passes through the layer.
The light having a selective wavelength reflected in the lower layer is not affected by the reflection angle or the wavelength (except for intensity reduction) for the reason described above when transmitted through the upper layer, and is reflected only in that layer. Observed as was.
Therefore, the pigment shape and dispersibility of the upper layer and the lower layer can be suitable for the case where each layer is independent, but in order to adjust the strength, the solid content of the upper layer (the component for forming the printing layer) The ratio of the pigment in (consisting of a pigment, a resin and an additive) is 10% to 30%. In order to obtain a predetermined reflected light intensity, mixing of 10% or more is necessary. However, if it exceeds 30%, the reflected light intensity of the lower layer becomes weak.

On the other hand, the ratio of the pigment in the lower layer is 30% to 50%. If it exceeds 50%, the interaction between the pigments such as aggregation between the pigments will work strongly, and it will be difficult to be parallel to the surface on which the printed layer is formed. It becomes difficult to obtain.
Similarly, in the case of a single printing layer, the ratio of the pigment is 30% to 50%.
In addition, a technique for increasing the uniformity of the upper layer transmitted light by making the size of the upper layer pigment smaller than the size of the lower layer pigment is also suitable. At this time, it is preferable that the size of the upper layer pigment is 1/2 to 1/5 of the size of the lower layer pigment. Here, the size is “the longest length of the pigment” in order to provide a simple index while corresponding to the area that reflects the observation light.
If it is 1/2 or more, the reflected light of the lower layer is weakened, and if it is 1/5 or less, the selective reflectivity of the reflected light is affected.
Usually, the thickness of the authenticity determination printing layer 2 is 3 μm to 30 μm depending on the pigment to be used, but for the same reason as described above, the thickness of the upper printing layer is changed to that of the lower printing layer. It is also preferable to set it to 1/2 to 1/5 of the thickness.
Of course, the configuration in which the print layers are stacked is not limited to two layers, and it is also preferable to have four layers or more alternately. When a layer having a small thickness and a high parallelism of the pigment to be used is laminated, the optical characteristics are uniform and high quality.
Furthermore, each layer may be patterned into a predetermined shape (band shape, checkered pattern shape, halftone dot shape, or other shape).
As fluorescent pigments, BASF Corporation Lumogen FV Violet 570 (Naphthalimide: 374 nm → 413 nm), Lumogen F Yellow 083 (perylene: excitation wavelength 476 nm → emission wavelength 490 nm: the same applies hereinafter), Lumogen F orange (perylene: 525 nm → 539 nm). ), Lumogen F Red 305 (perylene: 578 nm → 613 nm), etc.
Fluorescent pigments manufactured by Deigro: Gropril T / GT series, ACT series, Z / ZQ series, GPL series, LHY series, Fluorescent dyes: DIVELIGHT D-818 Roanoke yellow, D-784 ALPARTA yellow, D-208 APACHI yellow D-288 Cherokee Red, D-688 Colorado Red, D-298 Columbia Blue, or the like can be used.

Also, fluorescent pigments manufactured by Sinloihi: Sinroicolor FZ-2000 series (FZ-2001RED, etc.), FZ-2800 series (FZ-2808Blue, etc.), SX-100 series (SX-104 Orange, etc.), SX-1000 series (SX) -1004 Orange, SX-1005 Lemon Yellow, SX-1007 Pink, SX-1037 Magenta: average particle size of 1.0 μm or less, SW-10 series (SW-11Red Orange, SW-12NGreen, SW-13Red, SW-14NORange, SW-15N Lemon Yellow, SW-16N Orange Yellow, SW-07Cerise, SW-17Pink, SW-27Rose, SW-37Rubine, SW-47Vi let, SW-28Blue: average particle size of 1.0 μm or less), SP series, SF-3000 series (ultrafine particle type), SF-5000 series (ultrafine particle type), SF-8000 series (ultrafine particle type), Lumilite Nano RY202 (Particle size 30 nm, 365-370 nm → 619 nm), etc.
Manufactured by Moritechx Co., Ltd .: fluorescent particles (green: 468 nm → 508 nm) G25 (particle size 0.03 μm), G40 (particle size 0.04 μm), G50 (particle size 0.05 μm), G75 (particle size 0.07 μm), G85 (particle size 0.09 μm), G100 (particle size 0.10 μm), G140 (particle size 0.14 μm), G200 (particle size 0.20 μm), G250 (particle size 0.25 μm), G300 (particle size 0) .30 μm), G400 (particle size 0.40 μm), G450 (particle size 0.45 μm), G500 (particle size 0.50 μm), fluorescent particles (green: 360 nm → 530 nm) 34-1 (average particle size 3.0 μm) ), Fluorescent particles (blue: 365 nm → 447 nm) B50 (particle size 0.05 μm), B100 (particle size 0.10 μm), B150 (particle size 0.14 μm), B200 (particle size 0.20 μm) B300 (particle size 0.30 μm), B400 (particle size 0.40 μm), B500 (particle size 0.50 μm), fluorescent particles (red: 542 nm → 612 nm) B50 (particle size 0.05 μm), B60 (particle size 0) 0.05 μm), B100 (particle size 0.10 μm), B160 (particle size 0.16 μm), B200 (particle size 0.20 μm), B300 (particle size 0.30 μm), B400 (particle size 0.40 μm), B500 (Particle size 0.50 μm) or the like can be used.

Furthermore, UV excitation fluorescent pigments UVP-1 (emission wavelength 421 nm), UVB-1 (emission wavelength 453 nm), UVG-2 (emission wavelength 517 nm), UVR-2 (emission wavelength 626 nm), visible light excitation fluorescent pigment LMS, manufactured by Tail Navi, Inc. -570 (450-520 nm → 570 nm), LMS-560 (450-467 nm → 560 nm), LMS-550 (450-465 nm → 550 nm), LMS-540 (450-465 nm → 540 nm), etc.
Qdot525 nanocrystal (350-488 nm → 525 nm), Qdot565 nanocrystal (350-488 nm → 565 nm), Qdot585 nanocrystal (350-488 nm → 585 nm), Qdot605 nanocrystal (350-488 nm → 605 nm), Qdot625 nano Crystal (350-488 nm → 625 nm), Qdot655 nanocrystal (350-488 nm → 655 nm), Qdot705 nanocrystal (350-488 nm → 705 nm), Qdot800 nanocrystal (350-488 nm → 800 nm), etc.
Evidot manufactured by Evident Technologies, Inc .: CdSe / ZnS core shell Evidot (average particle size 7.2 to 9.6 nm, emission wavelength 490 nm to 620 nm), etc.
Quantum dots manufactured by Nippon Quantum Design Co., Ltd .: carboxyl group type, amino group type: diameters of 3.0 nm to 8.3 nm and emission wavelengths of 530 nm to 620 nm can be suitably used.

These fluorescent pigments are appropriately transparent resins, for example, acrylic ester resins, acrylamide resins, nitrocellulose resins, or polystyrene resins as thermoplastic resins, and unsaturated polyester resins as thermosetting resins, Kneading by ball mill, kneader, roll mill, etc. using glass beads or steel beads to reduce secondary aggregation in acrylic urethane resin, epoxy modified acrylic resin, epoxy modified unsaturated polyester resin, alkyd resin, phenol resin, etc. And then adjust the viscosity with a solvent, etc., and use a gravure method, offset method, silk screen method, curtain coating method, nozzle coating method, and ink jet method as appropriate, and with a thickness of 3 to 30 μm, transparent Formed on substrate 1 and authentic The sex determination printing layer 2 can be made.
At this time, the content of the fluorescent pigment in the printed layer is 10% to 50% in mass ratio.
If it is 10% or less, the fluorescence intensity is insufficient, and if it exceeds 50%, the dispersibility of the fluorescent pigment becomes insufficient, causing unevenness in fluorescence emission and affecting authenticity determination.
These authenticity determination print layers 2 are obtained when the person who has received the information recording laminate A5 opens the information recording laminate A5 and reads the information inside the information recording laminate A5. The company name of the “genuine sender”, company logo, or predetermined characters, designs, designs, etc., to ensure that it is “authentic” sent by the sender. In this case, it is assumed that there is a region where the “predetermined optical effect” can be accurately determined.
Therefore, for example, if it is a character, the character size shall be 5 mm x 5 mm-40 mm x 40 mm, and the line width shall be 1 mm-10 mm.

(Adhesive layer)
The adhesive layer 4 is provided on the authenticity determination printing layer 2 or directly on the transparent substrate 1. (See Figure 1 or 2.)
Transparent resins that can be used for the adhesive layer 4 (that is, adhesives) include polymethyl methacrylate (refractive index n = 1.49), polymethyl acrylate (n = 1.47), polybenzyl methacrylate (n = 1). .57), polybutyl acrylate (n = 1.44), polyvinylidene (n = 1.42), polyisobutyl acrylate (n = 1.48), cellulose nitrate (n = 1.54), methyl cellulose (n = 1.50), cellulose acetate propionate (n = 1.47), polystyrene (n = 1.60), polyethylene terephthalate (n = 1.64), polyvinyl acetate (n = 1.47), poly Vinyl chloride / vinyl acetate (n = 1.54), fluororesin (n = 1.32), melamine resin (n = 1.56), polycarbonate (n = 1.59) , Epoxy resin (n = 1.60 to 1.65), phenol resin (n = 1.60), thiourethane resin (n = 1.55 to 1.75), vinyl acetate resin (n = 1.47) , Acrylic resin (n = 1.45), vinyl acetate-acrylic copolymer (n = 1.48), vinyl acetate-vinyl chloride copolymer (n = 1.54), ethylene-vinyl acetate copolymer, Polyurethane resin (n = 1.60), thiourethane resin (n = 1.5-1.75), natural rubber (n = 1.52), chloroprene rubber (n = 1.35-1.56) A rubber-based resin or the like, or a mixture thereof can be used as appropriate.
In addition, both solvent-based and water-based adhesives can be used, and in particular, they can be dissolved or swollen with respect to the material constituting the authenticity judgment printing layer 2 (even if it is slightly dissolved or swollen, it is authentic. A water-based one with less influence on sex determination is more suitable.
Then, “transparent fine particles P2” 6 is included in these transparent resins. (See Figure 3 or 4)
In this “transparent fine particle P2” 6,
It is a metal compound such as metal oxide, metal nitride or metal carbide and has high transparency, and has a mass average particle size of 5 μm or less, in particular, a mass average particle size of 1 μm or less. Any of those having a thickness of 10 nm or more can be used.

Also, a transparent resin powder having a mass average particle diameter of 10 μm or less and a refractive index different from that of the resin for dispersing and holding the powder, in particular, having a mass average particle diameter of 3 μm or less and a powder Those having a different refractive index from those of the resin for dispersing and holding the resin can be used.
Furthermore, metal particles having a mass average particle diameter of 1 μm or less, particularly 100 nm or less, both of which are 10 nm or more, when dispersed in the resin, Those having high transparency and predetermined light scattering properties can be used.
Specifically, as a metal compound, silica, plate-like alumina, fibrous alumina, zirconia, Y-PSZ, spinel, talc, mullite, cordierite, silicon carbide, yttrium oxide, cerium oxide, samarium oxide, lanthanum oxide, tantalum oxide Terbium oxide, europium oxide, neodymium oxide, zinc oxide, titanium oxide, gnesium fluoride, tin oxide, antimony-containing tin oxide (ATO), tin-containing indium oxide (ITO), barium titanate, PT, PZT, PLZT, and more Can be used hematite, cobalt blue, cobalt violet, cobalt green, aluminum nitride (AlN), silicon nitride (Si ₃ N ₄ ), tantalum carbide, niobium carbide, etc. having colored transparency.
More specifically (hereinafter, the average particle diameter is shown in parentheses),
CI Kasei Co., Ltd. Ultra Fine Powder: Aluminum oxide (31 nm), bismuth oxide (51 nm), cerium oxide (14 nm), cobalt oxide (22 nm), copper oxide (48 nm), holonium oxide (38 nm), yttrium oxide (33 nm), cobalt Blue (40 nm), Adachi Sangyo Fine Powder: aluminum nitride (0.2 μm), boron nitride (hexagonal crystal) (2 μm), tantalum carbide (1.3 μm), niobium carbide (1.5 μm), silicon carbide (0. 45 μm), bismuth oxide (columnar) (2-4 μm), zirconium oxide (amorphous) (0.8 μm), tantalum pentoxide (amorphous) (0.7 μm), iridium oxide (0.1 μm or less), zinc oxide (Amorphous) (0.1-0.3 μm) or the like can be used.
Transparent resin powders include nylon powder, acrylic powder, phenol powder, silicone powder, penzoguanamine / melamine powder, polyethylene powder, cellulose powder, ultra-high molecular weight polyolefin (PE) powder, fluororesin powder, PAN ( Polyacrylonitrile) powder, styrene powder, acrylic / styrene powder, and the like can be used.

More specifically, nylon powder: Sumika Enviro Science (5-9μm),
Fluorine resin powder: Mitsui DuPont Fluoro Chemical Company PTFE dispersion (0.2-0.25 μm),
Adachi Industrial Polymer Fine Powder (spherical): benzoguanamine / formalin powder (1-3 μm), melamine / formalin powder (0.1-0.3 μm), the same (1-2 μm), silicone resin (0.3 μm), the same ( 0.5 μm), same (0.8 μm), styrene / acrylic acid ester (0.05 μm), same (0.08 μm), same (0.1 μm), cross-linked polystyrene (6-8 μm), fluororesin (0 0.2 μm), (0.3 μm), vinylidene fluoride resin (0.15-0.3 μm), and the like can be used.
Here, the difference in refractive index between these transparent resin powders and the resin for dispersing the transparent resin powders (meaning the resin used for the adhesive layer 4) is 0.01 or more. The light scattering property of the transparent resin powder can be expressed, but the refractive index difference is 0.1 to 0.6.
As the metal fine particles, Au nanoparticles (4.4 nm), Ag nanoparticles (11.5 nm), Cu nanoparticles (11.4 nm), tungsten fine particles, nickel fine particles, and the like can be used.
More specifically, precious metal (spherical) manufactured by Adachi Sangyo Co., Ltd .: gold (0.5 μm), silver (0.2 μm), same (0.5 μm), same (1 μm), tungsten (irregular) (0.6 μm) ), (1.5 μm), molybdenum (indeterminate) (0.5 μm), nickel (0.2 μm), (0.3 μm), (0.4 μm), and the like.

In addition, in order to obtain a naturally-friendly material structure, in particular, a latex mainly composed of natural rubber, a modified product thereof, particularly a natural rubber latex obtained by graft polymerization of natural rubber with styrene, particularly methyl methacrylate, etc. Those made from natural materials may be used, and acrylic resins, polyester resins (n = 1.60), polyamide resins (n = 1.53), or modified rubbers thereof, etc. Those having a relatively large internal cohesive force can be appropriately selected and used, and can be used alone or in a mixed system of two or more, and further added with a plasticizer and other additives as necessary.
Then, this [transparent fine particle P2] 6 is added and dispersed in the transparent resin within a range of 10% to 40%.
The adhesive containing these [transparent fine particles P2] 6 is appropriately dissolved in a solvent or water, and the authenticity judgment printing layer 2 is used by using various coating methods, silk screen printing methods, hot melt methods, etc. An adhesive layer 4 is formed on the relief determination printed layer relief of the relief authenticity determination print layer 7 or on the transparent reflective thin film layer 8 with a formation thickness after drying of 5 μm to 50 μm.
At this time, the “haze” of the adhesive layer 4 is 10% to 30%.
The transparent resin (adhesive) used for the adhesive layer 4 includes an authenticity determination printing layer 2, a relief authenticity determination printing layer 7, a transparent reflective thin film layer 8, and an information recording body 7. A material having strong adhesion to the surface and the surface of the information recording area 8 on the surface is appropriately selected. (See Figure 5.)
If the adhesiveness to the information recording body 7 and the information recording area 8 is insufficient, the information recording body 7 and the information recording area 8 are in the process of mailing or delivering the information recording laminate A5. As a result, a peeling phenomenon occurs at the interface with the adhesive layer 4, and air wraps around and appears cloudy.

(Pseudo adhesive layer and pseudo adhesive sheet)
As the pseudo-adhesive layer 3, an adhesive main agent, an adhesive strength adjusting agent, an additive, etc., and [transparent fine particles P1] 5 are mixed, and the pseudo-adhesive layer 3 and the information recording body 7 surface and information recording thereon are recorded. What adjusted the adhesiveness with the surface of the area | region 8 and the removability with the transparent base material 1 is used. (See Figure 5.)
The mixing ratio is as follows: 100 parts of the adhesive main agent, 5 to 10 parts of the adhesive strength modifier, and 0.01 to 5 parts of wax, UV absorber, antifoaming agent and defoaming assistant as appropriate. The emulsifying component is 200 to 300 parts water, 0.5 to 2 parts emulsifier, and 1 to 50 parts emulsifying resin.
[Transparent fine particles P1] 5 is added in an amount of 10 to 40 parts with respect to 100 parts of the adhesive main agent.
As the adhesive main agent, natural rubber, esterified natural rubber, styrene butadiene rubber, chloroprene rubber, polyvinyl acetate, polymethyl methacrylate, etc., or a mixture thereof, and further, transparent that can be used for the adhesive layer 4 described above. Can be used.
In mixing the adhesive main agent, the mixing ratio is adjusted to maintain the adhesion between the pseudo-adhesive layer 3 and the surface of the information recording body 7 and the surface of the information recording region 8 on the transparent base material 1 The adhesiveness is made smaller than the adhesiveness. (See Figure 5 or 6)

[Transparent fine particles P1] 5 can be selected from “transparent fine particles” that can be used for [transparent fine particles P2] 6 of the adhesive layer 4.
The pseudo-adhesive layer 3 does not become an obstacle to the confirmation of the authenticity judgment printing layer 2 in the state A6 in which the information recording laminate A5 is opened. Can be granted.
The adhesive force adjusting agent may be any of an inorganic substance and an organic substance as an acicular substance, as long as the shape is substantially acicular, and has various forms such as a flat shape, a spiral shape, and a scale shape. Select arbitrarily. In addition, fine particulate materials can be used, such as micro silica, synthetic zeolite, activated alumina gel, calcium carbonate, zinc oxide, titanium oxide, talc, clay, kaolin, activated clay, acrylic beads, starch, cellulose, shirasu balloon, etc. The particle diameter is preferably in the range of 0.01 μm to 0.3 μm, more preferably 0.01 μm to 0.1 μm. By adding together with the acicular substance, the amount of the fine particulate substance can be reduced and the fine particulate substance can be prevented from falling off.
As additives, fine particle waxes such as polyethylene wax and carnauba wax, and ultraviolet absorbers such as ammonia and ethanolamine can be added to prevent deterioration.
Further, an antifoaming agent (nonionic surfactant or anionic surfactant (mineral oil type)), an antifoaming aid and the like can be added.
These adhesive main agents, adhesive strength modifiers, and additives are dispersed in a medium such as water and applied to the transparent substrate 1 in an emulsion state.

When emulsifying, an emulsifier is added as necessary. As the emulsifier, oleic acid soap, castor oil potassium soap, casein, glue, gelatin and the like can be used. Moreover, in order to prevent secondary aggregation of the adhesive main agent when emulsified, an emulsifying resin having no affinity with the adhesive main agent can be added.
As the resin for emulsification, water-dispersible polymer polyester, thermoplastic elastomer, low-molecular polyethylene such as low-density polyethylene, ionomer, vinyl acetate-olefin copolymer and the like can be suitably used.
In the case of the pseudo-adhesive sheets A1 to A4, the pseudo-adhesive layer 3 sufficiently hides the authenticity determination print layer 2 as its uppermost layer and opens the information recording laminate A5 (see FIG. 6). In this case, in order to make it possible to visually recognize the recorded information in the information recording area 8, a high concealing agent is added from the above-mentioned adhesive strength adjusting agents, or an amorphous one is added to simulate The outermost surface in the case of the adhesive sheets A1 to A4 is roughened (the unevenness depth is 3 to 5 μm. When the information recording laminate A5 is formed, the rough surface is buried in the surface of the information recording body 7 and becomes transparent. It is also suitable. (Not shown)
The pseudo-adhesion layer 3 formed of an aqueous material such as an emulsion as described above, when peeled from the transparent substrate 1, has a surface that tends to be a mirror surface, and an information recording area 8 on the information recording body 7 that passes through this layer. This is preferable because the light that illuminates is less disturbed.
The formation thickness of the pseudo adhesion layer 3 is 5 μm to 50 μm after drying. (See FIGS. 1-4)
At this time, the “haze” of the pseudo adhesive layer 3 is 10% to 30%.

As the resin used for the pseudo-adhesion layer 3, a polyethylene resin, an ethylene / methacrylic acid copolymer resin, an ionomer resin, an ethylene / ethyl acrylate copolymer resin, or a mixture thereof can be used. In particular, a mixture system of polyethylene resin and ionomer resin (mixing ratio = 95/5 to 30/70) is preferable because of excellent peeling stability.
Further, ethylene / vinyl acetate copolymer resin, ethylene / acrylic acid copolymer resin, ethylene / ethyl acrylate copolymer resin, polyurethane resin, polyamide resin, vinyl chloride / vinyl acetate copolymer resin, polyester resin, vinyl chloride / propionic acid At least one resin selected from vinyl copolymer resins, polyvinyl formal resins, polyvinyl butyral resins, and the like can also be used. In particular, it is preferable to use a single substance or a mixture of ethylene / vinyl acetate copolymer resins.
In addition, in order to improve the peelability from the transparent substrate 1 and the storage stability, those having a glass transition temperature of 25 ° C. or higher and those having a Vicat softening temperature of 45 ° C. or higher are used.
Particularly, any resin selected from ethylene copolymer polyolefin, low density polyolefin, vinyl acetate copolymer polyolefin, and ionomer resin dispersion and a self-emulsifying polyolefin resin are mixed in a resin mixing ratio of 95/5 to 5/5. A mixture having a Vicat temperature of 45 ° C. or higher formed by applying and drying a mixture at a ratio of / 95 on the transparent substrate 1 is preferable.

As a suitable combination of the pseudo adhesive layer 3 and the adhesive layer 4, the pseudo adhesive layer 3 is selected from thermoplastic elastomers, ionomer resins, and low molecular weight polyolefin resins having a Vicat softening temperature of 45 ° C. or higher. At least one kind of resin is used, and the adhesive layer 4 is an ethylene / vinyl acetate copolymer resin, polyester resin, ethylene / acrylic acid copolymer having a glass transition temperature of 30 to 70 ° C. or a Vicat softening temperature of 40 to 65 ° C. It is preferable to use at least one kind of resin selected from a polymerization resin, an ethylene / ethyl acrylate copolymer resin, and the like, and a suitable information recording body 7 and information recording area by the adhesive layer 4 and the pseudo-adhesion layer 3 8 and stable removability of the pseudo-adhesive layer 3 can be obtained.
Then, any one of the pseudo-adhesive sheets A1 to A4 having such a material structure is inserted into the gap (space) in which the information recording body 7 is folded in half with the information recording surface (the surface having the information recording area 8) inside. Then, the two-fold folds are bonded to one side of the boundary line through the adhesive layer 4, and the other side is bonded to the other side through the pseudo-adhesive layer 3, so that the integrated information recording is performed. An information recording laminate in which the laminate is heated and pressurized at a temperature of 100 ° C. or less at a linear pressure of 1 kg / cm to conceal the authenticity judgment printing layer and the recorded information (information recording area 8) on the inside. A body A5 can be created. (See Figure 5.)
The heating and pressurizing conditions are adjusted according to the material of the information recording body 7 to be used and the material of each layer of the pseudo adhesive sheets A1 to A4.
Moreover, when a polypropylene film is used for the transparent substrate 1, the pseudo-adhesion layer 3 laminated thereon is composed of a copolymer of propylene and α-olefin and a mixture of crystalline polybutene (polybutene-1 homopolymer). To do. As the α-olefin, ethylene, butene, butadiene, pentene, or the like can be used, and a terpolymer of these two types and propylene can also be used. In particular, an ethylene / propylene copolymer and an ethylene / propylene / butene copolymer are preferable. The proportion of propylene in the copolymer is preferably 80 to 95%, and if it is 95% or more, the thermocompression bonding property by heating and pressurization is not good.

The mixing ratio of the copolymer and the crystalline polybutene is preferably in the range of 65 to 95% for the copolymer and 5 to 35% for the polybutene. If the crystalline polybutene is less than 5%, the temperature for heat-bonding becomes high, and the peeling force becomes too strong. On the other hand, if the crystalline polybutene exceeds 35%, the temperature for heat-bonding is lowered, but the range of the bonding temperature at which an appropriate peel strength can be obtained is narrowed. Moreover, about the pseudo-adhesion layer 3, when a formation thickness becomes thick, when heat-pressing, since a peeling force becomes strong, a feeling of peeling worsens.
Further, when the pseudo-adhesive layer 3 is adjusted so that the elongation at break of the layer is 350% or more, the aptitude for opening (meaning that “unevenness” hardly occurs when opened), the aptitude for folding, and the like. It is very excellent and preferable.
Furthermore, the information recording laminate can also be obtained by setting the 180-degree peel strength (peel rate 500 mm / min) at the interface between the transparent substrate 1 and the pseudo adhesive layer 3 to 20 to 150 g / 50 mm, particularly 20 to 100 g / 50 mm. When A5 is opened, it can be smoothly peeled off at the interface between the transparent substrate 1 and the pseudo-adhesive layer 3, and it is possible to prevent tearing within the layer. (See Figure 6.)
Further, by adding fine inorganic pigments or organic pigments to the adhesive layer 4 to form fine irregularities on the surface and sandwiching the folded pseudo adhesive sheets A1 to A3 in the folded information recording body 7 When the information recording laminate A5 is manufactured by thermocompression bonding, it is possible to prevent the molten resin from protruding, and to prevent blocking at the time of winding the pseudo adhesive sheets A1 to A3.
Furthermore, a fragrance | flavor, an antistatic agent, a leveling agent, a coloring agent, etc. can also be added.

(Information recording medium)
The information record body 7 includes various invoices, payment notices, receipts and maturity notices, various notices and information letters sent by mass merchandisers to customers as mail, direct mail, etc. Documents, flyers by posting, flyers, domestic mail, second-class mail, sea mail, air mail, echo postcards, e-sense cards, "private postcards", election mail, election office Information, polling place admission tickets, town mails, New Year's card postcards, postcards for summer greetings, and various extras, discount tickets, service tickets, etc. The “postcard” itself or “postcard” -like “seat” used for local area event guides and announcements, and by the Waterworks Bureau for water outages, waste water, traffic regulation notices, etc.
As the substrate (base paper), printing paper, information paper, etc., ie, high-quality paper, medium-quality paper, colored high-quality paper, art paper, coated paper, matte coated paper, mirror coated paper, art post, Kent paper, renewed paper , Carbonless paper, imitation paper, glassine paper, recycled paper, white paperboard, colored paperboard, processed paper, advanced printing paper, intermediate printing paper, lower printing paper, fine coated paper, lightweight coated paper, inkjet paper, sublimation heat transfer paper Printer paper, foam paper, carbonless paper, thermal paper, OCR paper, OMR paper, magnetic recording paper, etc. (information paper), unbleached kraft paper, semi-bleached kraft paper, coated bleached kraft paper, renewable moisture-proof paper Paper with a mixture of other materials, textured paper, pearl processed paper, liner, core raw paper, etc. that have no pigments on the surface, chemical pulp made by chemically treating wood raw materials, and wood Unravel the ingredients Coated paper, etc. that is coated with simple mechanical pulp, coated on one or both sides with non-coated paper, high-quality paper, or medium-quality paper as a base, and has been glossed through a roll under pressure. , Using Japanese paper made from wood pulp as raw material, and paper made from mulberry, mitsumata, ganpi, hemp, danyu etc. In addition, resin-impregnated paper, synthetic paper such as YUPO, resin film, and the like can also be used.

Polyethylene (PE), polypropylene (PP), expanded polypropylene (OPP), polystyrene (PS), methacrylic resin, acrylic resin, ABS resin (ABS), polyvinyl chloride, etc. are used as the resin film. In order to improve the printability etc. of the surface, the surface is subjected to a surface modification treatment or an appropriate resin-coated material, and various printing methods, various printers, Using other information recording methods, information (information recording area 8) in which at least information that should be kept secret from a third party can be used during mailing or delivery.
These substrates, those paper-based, those of ^{50g / m 2 ~300g / m 2} , preferably, used as a ^{90g / m 2 ~160g / m 2} .
Further, as the synthetic paper or film base, the thickness is 50 μm to 500 μm, preferably 60 μm to 200 μm.
Information recording including confidential information is performed on the surface of the information recording body 7 by printing such as gravure printing, offset printing, silk screen printing, or printer printing such as an ink jet method, thereby forming an information recording area 8. . (The formation process is not shown.)
It is natural that other information recording can be performed on the outer surface of the information recording body 7 using such a printing method or a printing method, but information recording that does not deteriorate or deteriorate under the above-described thermocompression bonding conditions should be used. Needless to say.

(Information recording laminate)
These information recording bodies 7 have the information recording surface (the surface having the information recording area 8) as the inside, and into the gap (space) folded in two along the crease 9, the pseudo-adhesive sheets A1 to A1 having such a material structure are formed. Insert any one of A4, and from above and below, heating at 80 ° C. to 200 ° C. and linear pressure pressurization of 100 g / cm to 10 kg / cm, under conditions of conveyance speed of 5 m / min to 30 m / min Then, by heating and pressurizing, the information recording laminate is subjected to thermocompression bonding to obtain a “folded information recording laminate” A5. (See Figure 5.)
Of course, it is possible to use three-fold, four-fold, and even more than that number of times.
When sending by post, ensure that the size, weight, and other specifications of the information recording laminate A5 after folding and crimping are the size and weight that conform to the Postal Code and postal regulations. adjust.
When delivering by mail, there are no restrictions on the size, weight, etc., so any size and weight can be used, and the left and right areas are not the same, but different areas Even those that are partially attached or those that are partially attached can be suitably used.
This information recording laminate A5 is delivered to the addressee by mail by mail or delivery by mail.
When this information recording laminate A5 is opened, peeling occurs from the adhesion surface (not shown) between the pseudo adhesive layers 3 due to the interface between the pseudo adhesive layer 3 and the transparent substrate 1 or the setting. As a result, the entire surface can be smoothly peeled off, and the confidential information or the like on the opened surface is recorded in the information recording area 8 on the information recording body (see FIG. 5 or FIG. 6). In addition, the authenticity determination print layer 2 can be visually recognized. (See Figure 6.)

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further in detail, it is not limited to this. In addition, except a solvent (a solvent, water, etc.), each composition of each layer is a mass part of solid content conversion.
Example 1
A transparent substrate 1 having a 50 μm thick polyethylene terephthalate film having an alignment film (not shown) formed by rubbing a polyimide resin thin film on one side is prepared, and the following polymerizable cholesteric is formed on the alignment film. The liquid crystal solution was printed by a stainless screen printing method so that the thickness of the coating film after drying was 5 μm, and then dried at 80 ° C. for 10 minutes to align the liquid crystal.
The aligned liquid crystal layer was irradiated with ultraviolet rays at 100 mJ / cm ² (365 nm) using an ultraviolet irradiation device to polymerize the liquid crystal layer to form a print layer made of three-dimensionally cross-linked liquid crystal. At this time, as a pattern of the printing layer, two characters of “true” and “positive” (not shown), which are character patterns of vertical × horizontal size 20 mm × 20 mm and line width 2 mm, are used (not shown). The authenticity determination printing layer 2 was formed. (See Figure 1)
<Cholesteric liquid crystal solution> Polymerizable cholesteric liquid crystal solution Polymerizable monomer exhibiting a nematic liquid crystal phase (chemical formula (11)) 25 parts by mass chiral agent (chemical formula (14)) 1 part by mass Irgacure 907 manufactured by Ciba Specialty Chemicals Co., Ltd. 1 mass Part cyclohexanone 73 parts by mass

A glass transition temperature of 57 ° C. is applied as a pseudo-adhesion layer 3 on the transparent base material 1 so as to cover the authenticity determination printing layer 2 and heat-adhesion with the information recording body 7 at 80 ° C. To the transparent polyvinyl butyral resin that can be made, toluene, isopropyl alcohol, and methyl cellosolve are added, and a screen printing ink (composition for the pseudo-adhesive layer 3) having the following composition is obtained by a stainless screen printing method. It formed so that the thickness after drying might be set to 20 micrometers.
Further, the same composition as the adhesive layer 4 is formed on the opposite surface of the transparent substrate 1 by a stainless screen printing method so that the thickness after drying is 20 μm. A pseudo-adhesive sheet A1 of Example 1 was obtained. (See Figure 1)
<Pseudo adhesive layer 3 composition>
Polyvinyl butyral resin 100 parts Toluene 10 parts Isopropyl alcohol 20 parts Methyl cellosolve 10 parts As the information recording medium 7, a predetermined design related to the sender on 150 g / m ² postcard paper (size of two postcard sizes), etc. Is printed by offset printing, and on an ink jet printer, privilege information for the addressee, etc. (this is the information recording area 8 on the information recording body 7) on one side, and vertical x horizontal Two black print areas having a size of 25 mm × 25 mm and destination information (address, address, etc.) printed on the other side were used. (Not shown)

The information recording body 7 is folded in half with the bonus information printing surface inside, and a pseudo adhesive sheet A1 is inserted between them (the adhesive layer 4 surface of the pseudo adhesive sheet A1 is in contact with the bonus information printing surface). ), And passed through a hot roll having a surface temperature of 110 ° C. at a speed of 1 kg / cm linear pressure and 10 m / min, the inner side of the information recording body 7 (postcard size is one size). ), The adhesive layer 4 of the pseudo-adhesive sheet A1, and the other inner side of the information recording body 7 (which is the size of one postcard size) and the pseudo-adhesive layer 3 are bonded together at a time, and the information of Example 1 is obtained. Recording laminate A5 was obtained. (See Figure 5.)
When this information recording laminate A5 is opened to the left and right, peeling occurs at the interface between the transparent substrate 1 and the pseudo adhesive layer 3, and the transparent substrate 1 of the pseudo adhesive sheet A1 is formed on the left side of the opened information recording laminate A5. , And the adhesive layer 4 are bonded so as to cover the privilege information printing portion on the left side of the information recording area 8, and on the right side thereof, the authenticity determination printing layer 2 of the pseudo adhesive sheet A1 and the pseudo adhesive layer 4 is in a state of being bonded so as to cover the information recording area 8 on the right side. (See FIG. 6. However, FIG. 6 shows a case where the composition and thickness of the adhesive layer 4 and the pseudo-adhesive layer 3 are different. In this embodiment, both layers have the same composition and the same thickness.) It becomes.)
At this time, the authenticity determination print layer 2 was embedded in the pseudo adhesive layer 4, and the surface of the authenticity determination print layer 2 and the surface of the pseudo adhesive layer 4 were flush and mirrored.
The surface of the authenticity determination printed layer 2 is the outermost surface on the observation side and is a mirror surface, so that the optical characteristics of reflected light when the authenticity determination printed layer 2 is illuminated are stabilized. I thought it would be.

The 180-degree peel strength between the transparent substrate 1 and the pseudo-adhesive layer 3 is 40 g / 50 mm (measurement speed 500 mm / min), and further the adhesive layer 4 and the information recording body 7 (information recording area). The peel strength similar to that of No. 8 was 300 g / 50 mm.
It was confirmed that the total weight and other specifications of the postcard produced in this way are within the standards of the Postal Code and the Postal Rules and can be used as “postcards”.
This information recording laminate A5 does not cause any problems such as peeling at the time of mailing, can smoothly open the information recording laminate A5 that has arrived, does not cause any problems such as “peeling curl”, and has an opening angle of 180 degrees. As a result of observing the authenticity determination print layer 2 with indoor illumination light, the black print region of the above-described vertical × horizontal size 25 mm × 25 mm is formed on the surface of the information recording body 7 located behind the authenticity determination print layer 2. Is provided (meaning that the positions of the black print area and the character pattern are exactly overlapped), and when the authenticity determination print layer 2 is observed, an angle of 10 degrees with respect to the normal incident illumination light The reflected light in the direction of red is red, the observation angle is changed, and the reflected light in the direction of an angle of 60 degrees is confirmed. As a result, blue reflected light is displayed, and this information recording laminate A5 is genuine. Arco I was able to confirm.
Also, the recorded information in the information recording area 8 could be visually recognized in the same way on the left and right.
Moreover, since the message “You can make authenticity by opening this postcard” below the address description surface of the information recording laminate A5, the recipient of the postcard who saw this message. (Meaning the addressee) seemed to increase the rate of opening this postcard (“opening rate”).
In addition, in response to the message “Please use this postcard for authenticity of the next postcard.”, The opened information recording laminate A5 will be saved and sent to the same sender. The possibility of using it for authenticity judgment of another information recording layered product (not shown) delivered from is thought to increase.

(Example 2)
A pseudo adhesive layer 3 is provided on one entire surface of the transparent base material 1, and the authenticity determination print layer 2 and the authenticity determination print layer 2 are covered on the other surface of the transparent base material 1. Except that 4 was provided, a pseudo-adhesive sheet A2 of Example 2 was obtained in the same manner as Example 1. (See Figure 2.)
When this pseudo adhesive sheet A2 was evaluated, it was found that when the information recording laminate A5 was opened to the left and right, the black print area on the left side and the position of the character pattern were arranged so as to overlap. Except that the sex determination printing layer 2 was observed through the transparent substrate 1, it was the same as in Example 1, and the evaluation result was as good as in Example 1.
(Example 3)
As the pseudo-adhesive layer 3, a transparent polyvinyl butyral resin having a glass transition temperature of 57 ° C. and capable of being thermally bonded to the information recording body 7 at 80 ° C., and a transparent resin powder (melamine, Toluene, isopropyl alcohol, and methyl cell were added to a paste (not shown) in which formalin powder was added with an appropriate solvent and dispersed for 10 minutes by a ball mill using steel beads having a diameter of 2 mm. By adding a solvent, a screen printing ink (composition for pseudo-adhesive layer 3) having the following composition was formed by a stainless screen printing method so that the thickness after drying was 20 μm. On the opposite surface of the substrate 1, the same composition ([transparent fine particles P2] 6 is formed as [transparent fine particles P1] as an adhesive layer 4). In the same manner as in Example 1 except that the thickness after drying is 20 μm by a stainless screen printing method and cut into one postcard size. Thus, a pseudo adhesive sheet A3 of Example 3 was obtained. (See Figure 3.)
<Pseudo adhesive layer 3 composition>
Polyvinyl butyral resin 100 parts Melamine / formalin powder (0.3 μm, manufactured by Adachi Sangyo Co., Ltd.) 20 parts Toluene 10 parts Isopropyl alcohol 20 parts Methyl cellsolve 10 parts

At this time, the “haze” of each of the adhesive layer 4 and the pseudo-adhesive layer 3 was 15%.
Except for the above, an information recording laminate A5 was produced in the same manner as in Example 1, and evaluated in the same manner as in Example 1. (See Figures 5 and 6.)
As an evaluation result, in the state of the pseudo-adhesive sheet A3, even if the authenticity determination printing layer 2 is viewed from the pseudo-adhesive layer 3 side or from the adhesive layer 4 side, its presence can be concealed. In addition, in the state A6 in which the pseudo-adhesive laminate A5 is opened, the authenticity determination printing layer 2 is exposed on the outermost surface, so that the presence of [transparent fine particles P1] 5 is not hindered at all. Furthermore, the same good results as in Example 1 were obtained except that the reflected light on the surface of the information recording body 7 was reduced by [transparent fine particles P1] 5.
Example 4
As the transparent substrate 1, a polyethylene terephthalate film having a thickness of 50 μm is used, and the following [Coating composition containing the liquid crystal pigment 1] is used thereon, and stainless screen printing is performed so that the thickness after drying becomes 5 μm. (Print while applying a share with a blade for a screen.) Then, it was cured by irradiating with ultraviolet rays, and a character pattern of “vertical × horizontal size 20 mm × 20 mm” and line width 2 mm was set to “true” and “positive” 2 A printed layer 1 of characters was formed. (Not shown)
As the liquid crystal pigment 1, a Helicone HC sapphire XS manufactured by Wacker, Germany, was used and treated for 30 minutes with a ball mill containing 2 mm diameter glass beads for prevention of aggregation of the liquid crystal pigment and uniform dispersion to obtain a coating composition.
<Coating composition containing liquid crystal pigment 1>
Liquid crystal pigment 1 10 parts by weight Polyester acrylate 30 parts by weight Ethyl acetate 30 parts by weight Isobutyl acetate 20 parts by weight Methyl isobutyl ketone 10 parts by weight Benzophenone photoinitiator 0.1 parts by weight

Next, the following [Coating composition containing liquid crystal pigment 2] is used using liquid crystal pigment 2 (Helicone HC Maple XS manufactured by Wacker, Germany), and in the same manner as above, The print layer 2 was formed so as to be overlapped, and an authenticity determination print layer 2 composed of a laminate (not shown) having a two-layer structure was obtained. (See Figure 1)
<Coating composition containing liquid crystal pigment 2>
Liquid crystal pigment 2 10 parts by weight Polyester acrylate 30 parts by weight Ethyl acetate 30 parts by weight Isobutyl acetate 20 parts by weight Methyl isobutyl ketone 10 parts by weight Benzophenone photoinitiator 0.1 parts by weight The same as in Example 1 except the above Thus, a pseudo adhesive sheet A1 of Example 4 was obtained.
In the same observation as in Example 1, a so-called “red shift” was confirmed, and good results similar to those in Example 1 were obtained except that the authenticity could be determined easily and reliably. .
(Example 5)
As the pearl pigment 1, using Iriodin type pigment B (manufactured by Merck & Co., Inc., natural mica flakes coated with titanium oxide 300 nm, particle size 5 to 25 μm, thickness 2 to 5 μm: 0 degree reflection 450 nm, 70 degree reflection 200 nm) The following [Coating composition containing pearl pigment 1] was prepared and treated with a stainless steel screen printing method for 30 minutes in a ball mill containing 2 mm glass beads to prevent pigment aggregation and uniform dispersion. The printed layer 1 (not shown) is formed to have a thickness of 10 μm.

<Coating composition containing pearl pigment 1>
Pigment B 10 parts by mass Urethane acrylate (refractive index n = 1.49) 30 parts by mass Ethyl acetate 30 parts by mass Isobutyl acetate 20 parts by mass Methyl isobutyl ketone 10 parts by mass Benzophenone photoinitiator 0.1 parts by mass In addition, as the pearl pigment 2, Iriodin type pigment C (manufactured by Merck Co., Ltd., coated with 100 nm titanium oxide on a natural mica flake, particle size 5 to 25 μm, thickness 2 to 5 μm: 0 degree reflection 1500 nm, 70 degree reflection 700 nm) The following [Coating composition containing pearl pigment 2] was prepared, treated with a ball mill containing 2 mm glass beads for 30 minutes to prevent pigment aggregation and uniform dispersion, and then dried by a stainless screen printing method. It is formed so as to have a thickness of 10 μm later, and as a printing layer 2 (not shown), a stack of the printing layer 1 and the printing layer 2 is formed. That was formed authenticity determination printed layer 2. (See Figure 1)
<Coating composition containing pearl pigment 2>
Pigment C 10 parts by mass Urethane acrylate (refractive index n = 1.49) 30 parts by mass Ethyl acetate 30 parts by mass Isobutyl acetate 20 parts by mass Methyl isobutyl ketone 10 parts by mass Benzophenone photoinitiator 0.1 parts by mass In the same manner as in Example 4, a pseudo-adhesive sheet A1 of Example 5 was obtained.
In the same evaluation as in Example 4, good results similar to those in Example 4 were obtained.

(Example 6)
Using the UV-excited fluorescent pigment UVR-2 manufactured by Tale Navi as a fluorescent pigment, the following [Coating composition containing fluorescent pigment] is prepared and formed to a thickness of 10 μm after drying by a stainless screen printing method. Thus, the authenticity determination print layer 2 was formed. (See Figure 1)
・ <Coating composition containing fluorescent pigment>
UV-excited fluorescent pigment UVR-2 manufactured by Tail Navi Co., Ltd. 5 parts by mass Acrylic resin 10 parts by mass Methyl ethyl ketone 40 parts by mass Ethyl acetate A pseudo-adhesive sheet A1 of Example 6 was obtained in the same manner as Example 1 except for the above. (See Figure 1)
In the same evaluation as that in Example 1, UV-LED module LC-L2 (wavelength 365 nm) manufactured by Hamamatsu Photonics was used as illumination light for authenticity determination, and red “true” and “positive” letter-like fluorescent light emission. Good results similar to those of Example 1 were obtained except that the above was confirmed.
(Comparative example)
(Comparative Example 1)
A pseudo adhesive sheet and an information recording laminate of Comparative Example 1 were obtained in the same manner as in Example 1 except that the authenticity determination print layer 2 was not formed.
When this information recording laminate was evaluated in the same manner as in Example 1, it did not have any characteristics, attracted the attention of the recipient, and seemed to be unable to improve the opening ratio.

A1 Pseudo-adhesive sheet (An authenticity judgment printing layer is provided between the transparent base material and the pseudo-adhesion layer.)
A2 Pseudo-adhesive sheet (An authenticity judgment printing layer is provided between the transparent substrate and the adhesive layer.)
A3 pseudo adhesive sheet (in the configuration of A1, a pseudo adhesive layer containing transparent fine particles and an adhesive layer are provided.)
A4 pseudo adhesive sheet (in the configuration of A2, a pseudo adhesive layer containing transparent fine particles and an adhesive layer are provided.)
A5 information recording laminate {the information recording body 7 is folded so that any one of the pseudo adhesive sheets A1 to A4 is sandwiched, and the information recording area 8 on the information recording body 7 In one area when the information recording area 8 is divided into two), one of the pseudo adhesive layers 3 of the pseudo adhesive sheets A1 to A4 is bonded to the other (the other area when the same is applied). ) Is a state where any one of the adhesive layers 4 of the pseudo adhesive sheets A1 to A4 is adhered. An information recording laminate is formed by folding the information recording body 7 so as to sandwich any of the pseudo-adhesive sheets A1 to A4, and then integrating them by thermocompression bonding. }
A6 Information recording laminate after opening the information recording laminate A5 (peeling off at the interface between the pseudo adhesive layer 3 of the pseudo adhesive sheet A1 and the transparent substrate 1)
DESCRIPTION OF SYMBOLS 1 Transparent base material 2 Authenticity determination printing layer 3 Pseudo adhesion layer 4 Adhesive layer 5 Transparent fine particle P1 (in pseudo adhesion layer)
6 Transparent fine particles P2 (in the adhesive layer)
7 Information recording body 8 Information recording area on information recording body 9 Crease

Claims (7)

A pseudo-adhesive sheet, wherein an authenticity determination printing layer and an adhesive layer are provided in this order on one surface of a transparent substrate, and a pseudo-adhesion layer is provided on the other surface of the transparent substrate.
A pseudo adhesive sheet, wherein an authenticity determination printing layer and a pseudo adhesive layer are provided in this order on one surface of a transparent substrate, and an adhesive layer is provided on the other surface of the transparent substrate.

The pseudo adhesive sheet according to claim 1, wherein the adhesive layer and the pseudo adhesive layer contain transparent fine particles.

The pseudo adhesive sheet according to any one of claims 1 to 3, wherein the authenticity determination printing layer is made of a liquid crystal material.
The pseudo adhesive sheet according to any one of claims 1 to 3, wherein the authenticity determination printing layer contains a pearl pigment.
The pseudo-adhesive sheet according to any one of claims 1 to 3, wherein the authenticity determination print layer includes a fluorescent pigment.

Of the two surfaces divided by the fold of the information recording body when the information recording body is folded along the fold so as to sandwich the pseudo adhesive sheet according to any one of claims 1 to 6 An information recording laminate in which one surface and the adhesive layer of the pseudo-adhesive sheet are bonded, and the other surface and the pseudo-adhesive layer of the pseudo-adhesive sheet are bonded,
An information recording laminate, wherein an interface between the pseudo adhesive layer and the transparent substrate is peelable.

Images