CN112185237B - An encrypted digital identification and preparation method thereof - Google Patents
An encrypted digital identification and preparation method thereof Download PDFInfo
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- CN112185237B CN112185237B CN202011168974.2A CN202011168974A CN112185237B CN 112185237 B CN112185237 B CN 112185237B CN 202011168974 A CN202011168974 A CN 202011168974A CN 112185237 B CN112185237 B CN 112185237B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
- G09F3/0294—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time where the change is not permanent, e.g. labels only readable under a special light, temperature indicating labels and the like
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Abstract
本发明公开了一种加密数码标识及其制备方法，该标识包括基膜层和信息层；信息层包括第一、第二结构区；第一结构区包括第一光变信息层、色层和第一镀层；第一光变信息层形成于基膜层的表面，具有可在第一镀层的作用下显示全息图案的第一微结构，且第一微结构嵌入色层内部；第二结构区包括透明标识层、色层和第一镀层；透明标识层形成于基膜层的表面，具有可形成防伪码的透明的第二微结构，且第二微结构嵌入色层内部；当通过基膜层将第一光变信息层、透明标识层与色层分离后，第一光变信息层上的第一微结构在色层表面形成全息图案，透明标识层上的第二微结构在色层表面形成防伪码；本发明提供的标识能从表面上分辨产品的真伪，防止标识被重复使用。
The invention discloses an encrypted digital label and a preparation method thereof. The label comprises a base film layer and an information layer; the information layer comprises a first structure area and a second structure area; the first structure area comprises a first optically variable information layer, a color layer and a first coating layer; the first optically variable information layer is formed on the surface of the base film layer, and has a first microstructure that can display a holographic pattern under the action of the first coating layer, and the first microstructure is embedded in the color layer; the second structure area comprises a transparent label layer, a color layer and the first coating layer; the transparent label layer is formed on the surface of the base film layer, and has a transparent second microstructure that can form an anti-counterfeiting code, and the second microstructure is embedded in the color layer; when the first optically variable information layer, the transparent label layer and the color layer are separated through the base film layer, the first microstructure on the first optically variable information layer forms a holographic pattern on the surface of the color layer, and the second microstructure on the transparent label layer forms an anti-counterfeiting code on the surface of the color layer; the label provided by the invention can distinguish the authenticity of a product from the surface, and prevent the label from being reused.
Description
Technical Field
The invention belongs to the technical field of anti-counterfeiting devices, and particularly relates to an encrypted digital identifier and a preparation method thereof, which can realize high-end anti-counterfeiting and variable information extraction functions of products and simultaneously have the functions and advantages of anti-counterfeiting, anti-uncovering and disposable use.
Background
In order to protect legal rights of consumers and merchants, the merchants adopt various anti-counterfeiting means to perform anti-counterfeiting marking on commodities, and the holographic anti-counterfeiting label is one type. However, the existing anti-counterfeit labels are easy to copy or reusable, and most anti-counterfeit labels can be reused by illegal persons after being used, so that the anti-counterfeit labels are true and false and are mixed with fish, the situation that the anti-counterfeit labels cannot be anti-counterfeit is caused, the legal interests of merchants are seriously infringed, and even the health and life of consumers are endangered. Therefore, there is a strong need in society for an anti-counterfeiting product that is more sophisticated, difficult to reuse, convenient to use, and easy to identify. In this context, it is more necessary to study tamper-evident disposability of the sign to enhance the anti-counterfeiting function of the sign.
At present, digital marks such as two-dimensional codes, bar codes and the like are widely applied to the field of tracing product information, and some products are more in a one-object one-code mode to highlight the high-end positioning of the products, however, most products have difficulty in considering the anti-counterfeiting image and the anti-counterfeiting code after being combined, and the anti-counterfeiting upgrading function basically only plays the advantages of one anti-counterfeiting mode. For example, one part of the marks is that the anti-counterfeiting image is damaged after being uncovered and cannot be used for a second time, which only uses the disposable characteristic of the anti-counterfeiting image, and the other part is that the anti-counterfeiting code is hidden behind the image and can be displayed only after the pattern is completely uncovered, which only uses the characteristic of the anti-counterfeiting code. However, the two methods are easy to be utilized by a machine to take the smart molecule, for example, when the mark acted by the anti-counterfeiting image is quickly uncovered, the image is not damaged, namely, the mark is uncovered together with the self-adhesive, so that the mark which is completely uncovered can be repeatedly utilized because of the fact that the mark is not broken quickly, the mark acted by the anti-counterfeiting code is easier to be drilled with a cavity, the process is related to the realization of the mark, the anti-counterfeiting image is often designed to be difficult to damage in order to highlight the integrity of the anti-counterfeiting code, the complete anti-counterfeiting code can be exposed when the anti-counterfeiting image is uncovered, the anti-counterfeiting image can be easily re-pasted for use, the anti-counterfeiting code is likely to be replaced, the uniqueness and the correctness of the anti-counterfeiting code are difficult to guarantee, and more air is more likely that a consumer can not distinguish whether the anti-counterfeiting code is used from the surface of the mark.
Therefore, it is urgent to develop a mark that can not only consider the anti-counterfeit image incapable of being used secondarily, but also distinguish the use condition of the anti-counterfeit code from the surface.
Disclosure of Invention
Aiming at least one defect or improvement requirement of the prior art, the invention provides an encryption digital mark and a preparation method thereof, and aims to solve the problems that the conventional digital mark can be reused after being uncovered and cannot guarantee anti-counterfeiting effect.
In order to achieve the above object, according to a first aspect of the present invention, there is provided an encrypted digital signature, comprising a base film layer and an information layer, wherein the information layer comprises a first structural area and a second structural area;
The first structure area comprises a first optically variable information layer, a color layer and a first plating layer which are sequentially stacked, wherein the first optically variable information layer is formed on the surface of the base film layer, is provided with a first microstructure capable of displaying holographic patterns under the action of the first plating layer, and is embedded into the color layer;
The second structure area comprises a transparent identification layer, a color layer and a first plating layer which are sequentially stacked, wherein the transparent identification layer is formed on the surface of the base film layer and is provided with a transparent second microstructure capable of forming anti-fake codes, and the second microstructure is embedded into the color layer;
after the first optically variable information layer, the transparent identification layer and the color layer are separated by the base film layer, a holographic pattern is formed on the surface of the color layer by the first microstructure on the first optically variable information layer, and an anti-counterfeiting code is formed on the surface of the color layer by the second microstructure on the transparent identification layer.
Preferably, the information layer includes a third structure area;
The third structure region comprises a second optically variable information layer and a first plating layer which are sequentially stacked, wherein the second optically variable information layer is formed on the surface of the base film layer and is provided with a third microstructure capable of displaying positioning marks under the action of the first plating layer.
Preferably, the information layer includes a third structure area;
the third structure region comprises a second optically variable information layer, a second plating layer, a color layer and a first plating layer which are sequentially stacked, wherein the second optically variable information layer is formed on the surface of the base film layer and is provided with a third microstructure capable of displaying positioning marks under the action of the second plating layer.
Preferably, in the encrypted digital mark, the stripping value among the first optically variable information layer, the transparent mark layer and the color layer is 0.1-0.5N/cm.
Preferably, in the encrypted digital mark, the color layer is formed by mixing thermoplastic resin with a softening point of 120-250 ℃ and metal complex dye, wherein the mass ratio of the metal complex dye is 5% -25%.
Preferably, the above encrypted digital identifier, the thermoplastic resin is one or more selected from acrylic resin, polyester resin, polyurethane, polystyrene and styrene-acrylic copolymer.
Preferably, in the encrypted digital mark, the dyne value of the surface of the side, which is in contact with the first optically variable information layer and the transparent mark layer, of the base film layer is greater than 48.
Preferably, the plating layer is a metal aluminum layer or a dielectric layer;
The thickness of the aluminum value of the metal aluminum layer is 300-500 AI;
the dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%.
Preferably, the encrypted digital identifier is obtained by curing the coating after transferring the holographic pattern through a master mask.
Preferably, the encrypted digital mark is obtained by performing inkjet on a transparent material to form an anti-counterfeiting code with digital information, and then curing the anti-counterfeiting code, wherein the anti-counterfeiting code is invisible before separation of the transparent mark layer and the chromatographic layer.
Preferably, the encrypted digital mark is obtained by solidifying the coating after transferring the positioning mark by a master mask.
The curing mode can adopt the modes of crosslinking curing, heating curing, ultraviolet curing and the like, and as a more preferable mode, ultraviolet curing which can be carried out at normal temperature is adopted, and the corresponding coating is a UV material.
According to a second aspect of the present invention, there is also provided a method of preparing an encrypted digital signature, comprising the steps of:
s1, providing a base film layer, forming a first microstructure on a first area of the base film layer, and forming a transparent second microstructure on a second area of the base film layer;
S2, coating a color layer on the first microstructure and the second microstructure, wherein the color layer respectively permeates into gaps of the first microstructure and the second microstructure;
s3, forming a first plating layer on the surface of the color layer, and forming and displaying a holographic pattern by a first microstructure under the action of the first plating layer;
After the first microstructure, the second microstructure and the color layer are separated through the base film layer, the first microstructure can form holographic patterns on the surface of the color layer, and the second microstructure can form anti-counterfeiting codes on the surface of the color layer.
According to a third aspect of the present invention, there is also provided a method for preparing an encrypted digital signature, comprising the steps of:
s1, providing a base film layer, forming a first microstructure and a third microstructure on a first area and a third area of the base film layer respectively, and forming a transparent second microstructure on a second area of the base film layer;
S2, coating a color layer on the first microstructure and the second microstructure, wherein the color layer respectively permeates into gaps of the first microstructure and the second microstructure;
s3, forming a first plating layer on the surfaces of the color layer and the third microstructure, forming and displaying holographic patterns by the first microstructure under the action of the first plating layer, and forming and displaying positioning marks by the third microstructure;
After the first microstructure, the second microstructure and the color layer are separated through the base film layer, the first microstructure can form holographic patterns on the surface of the color layer, and the second microstructure can form anti-counterfeiting codes on the surface of the color layer.
According to a fourth aspect of the present invention, there is also provided a method for preparing an encrypted digital signature, comprising the steps of:
s1, providing a base film layer, forming a first microstructure and a third microstructure on a first area and a third area of the base film layer respectively, and forming a transparent second microstructure on a second area of the base film layer;
S2, forming a second coating on the first microstructure, the second microstructure and the third microstructure, removing the second coating on the first microstructure and the second microstructure, and reserving the second coating on the third microstructure;
s3, coating a color layer on the first microstructure, the second microstructure and the second plating layer, wherein the color layer respectively permeates into gaps of the first microstructure and the second microstructure;
S4, forming a first plating layer on the surface of the color layer, and forming and displaying a holographic pattern by a first microstructure under the action of the first plating layer;
After the first microstructure, the second microstructure and the color layer are separated through the base film layer, the first microstructure can form holographic patterns on the surface of the color layer, and the second microstructure can form anti-counterfeiting codes on the surface of the color layer.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) The encrypted digital mark and the preparation method thereof provided by the invention can observe the holographic pattern in the first structural area through the base film layer before the mark is uncovered, the anti-counterfeiting code in the second structural area is hidden and cannot be directly observed, and after the mark is uncovered, the anti-counterfeiting code information hidden by the second microstructure in the second structural area is separated from the color layer, so that the visible colored anti-counterfeiting code is presented on the color layer. The anti-counterfeiting image and the anti-counterfeiting code in the mark are positioned on the same layer, so that the anti-counterfeiting image and the anti-counterfeiting code are prevented from being pasted back for use after being uncovered, and the anti-counterfeiting image and the anti-counterfeiting code are developed after being exposed, thereby being beneficial to distinguishing whether the mark is used or not.
(2) The encrypted digital mark and the preparation method thereof provided by the invention have the advantages that the anti-counterfeiting code is taken as a part of the anti-counterfeiting image, the anti-counterfeiting image and the anti-counterfeiting code are separated from the base film after the mark is used, the brightness of the anti-counterfeiting pattern is better, the anti-counterfeiting code is displayed, if the base film layer is stuck back to naked eyes again, the destructive property can be distinguished, the identification degree is high, the anti-counterfeiting code cannot be used for the second time, and the anti-counterfeiting encryption effect is realized.
Drawings
FIG. 1 is a cross-sectional view of a first structural section of an encrypted digital identifier according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a second structural area in an encrypted digital signature provided by an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a first configuration of a third configuration area in an encrypted digital identifier according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a second configuration of a third configuration area in an encrypted digital signature according to an embodiment of the present invention;
In all the drawings, the same reference numerals denote the same technical features, in particular a 101-base film layer, a 102-first optically variable information layer, a 103-transparent identification layer, a 104-color layer, 105, 108-plating layers, 106-pressure-sensitive adhesive layers and 107-second optically variable information layer.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
According to the encrypted digital mark, on the premise of playing the role of anti-counterfeiting encryption, the anti-counterfeiting image is difficult to be attached to the anti-counterfeiting code again, the secondary use of the encrypted digital mark can be effectively prevented, even if the anti-counterfeiting image and the anti-counterfeiting code are attached again, a consumer can easily distinguish from the surface of the mark, and the authenticity of a product is further distinguished, so that the anti-counterfeiting level is improved.
The structure and preparation method of the encrypted digital identifier provided by the invention are described in detail below with reference to the examples and the accompanying drawings.
Example 1
The encrypted digital identifier provided by the embodiment comprises a base film layer and an information layer which are sequentially stacked. The base film layer can be made of various conventional film materials suitable for processing laser holographic patterns, such as PET biaxially oriented films and the like, and is a supporting structure of the whole encrypted digital mark, and the whole encrypted digital mark is covered and protected. In general, the base film layer is preferably a transparent structure so as to obtain information content in other layer structures of the encrypted digital identifier through the layer structure.
FIG. 1 is a cross-sectional view of a first structural region in an encrypted digital identifier, and FIG. 2 is a cross-sectional view of a second structural region in an encrypted digital identifier.
Referring to fig. 1, the first structure region comprises a first optically variable information layer 102, a color layer 104 and a plating layer 105 which are sequentially stacked, wherein the first optically variable information layer 102 is formed on the surface of the base film layer 101, has a first microstructure capable of displaying a holographic pattern under the action of the plating layer 105, and is embedded in the color layer 104;
The first optically variable information layer 102 is attached to the base film layer 101 and is a carrier of the first microstructure in this embodiment, and in this embodiment, one or more first microstructures capable of forming a holographic pattern with an anti-counterfeiting effect are disposed on a side of the first optically variable information layer 102 away from the base film layer 101. In a specific example, the first microstructure is obtained by UV curing after transferring a holographic pattern from a master. Under the action of the plating layer 105, the first microstructure can present monochromatic, dynamic, homotopic, depth, holographic lens, purple light and holographic patterns based on visual effects such as reflection cat eye, platinum relief, zero-order diffraction, nano optics and the like, and form a certain information expression. In the preparation process of the encrypted digital identifier in this embodiment, the holographic pattern may be used to provide basic information including manufacturer, brand mark, etc., and may also be used to make information for prompting the consumer to reveal the authenticity of the identified commodity, etc., without specific limitation.
A color layer 104 with a certain thickness is arranged between the first optically variable information layer 102 and the plating layer 105, and the first microstructure on the first optically variable information layer 102 is embedded in the color layer 104, so that when the first optically variable information layer 102 is separated from the color layer 104 by the base film layer 101, the first microstructure on the first optically variable information layer 102 can form a holographic pattern on the surface of the color layer 104.
The primary function of the coating 105 is to prevent light from passing completely through, and when the encrypted digital mark is in use, after the light is incident, reflection is formed at the interface between the coating 105 and the first microstructure, so that a holographic pattern can be presented. The plating layer 105 may be a metal aluminum layer or a dielectric layer, and the metal aluminum layer and the dielectric layer may be prepared by vacuum evaporation. When a metal aluminum layer is used, the thickness of the aluminum value is 300-500 AI. The dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%.
The color layer 104 is disposed in close proximity to the first optically variable information layer 102, in this embodiment, the color layer is formed by mixing a thermoplastic resin with a softening point of 120-250 ℃ and a metal complex dye, wherein the thermoplastic resin can be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene and styrene-acrylic copolymer, the mass of the metal complex dye accounts for 5% -25% of the total mass of the thermoplastic resin and the metal complex dye, the color of the metal complex dye is not particularly limited, and the color can be arbitrarily selected according to requirements.
Referring to fig. 2, the second structure region includes a transparent identification layer 103, a color layer 104 and a plating layer 105, which are sequentially stacked, wherein the transparent identification layer 103 is formed on the surface of the base film layer 101, has a transparent second microstructure capable of forming an anti-counterfeiting code, and is embedded into the color layer 104;
The transparent identification layer 103 is attached to the base film layer 101, and is a carrier of the second microstructure in this embodiment, one or more transparent second microstructures capable of forming anti-pseudo codes are disposed on a side of the transparent identification layer 103 away from the base film layer 101, and the transparent second microstructures cannot be directly observed through the base film layer 101. In a specific example, the second microstructure is obtained by ultraviolet light curing after the transparent UV material is inkjet-formed to form an anti-counterfeiting code with digital information, and the anti-counterfeiting code is invisible before the transparent identification layer is separated from the color layer. The anti-counterfeiting code comprises, but is not limited to, a two-dimensional code, a bar code, a verification code and the like, and in one example, the two-dimensional code and the bar code information are mainly used for providing the functions of logistics management, product tracing, big data analysis and the like of products, and the verification code information can endow the functions of enterprise marketing, anti-counterfeiting verification, member integration, consumer management and the like, and is not particularly limited.
Since the second microstructure is transparent, before the transparent identification layer 103 is separated from the color layer 104, the second microstructure cannot be observed through the base film layer 101, the anti-counterfeiting code information corresponding to the second microstructure is "hidden", and when the transparent identification layer 103 is separated from the color layer 104 through the base film layer 101, the second microstructure on the transparent identification layer 103 can form anti-counterfeiting codes on the surface of the color layer 104, the anti-counterfeiting code information hidden by the second microstructure is separated from the color layer 104, and visible colored anti-counterfeiting codes are presented on the color layer 104, and the color of the anti-counterfeiting codes is the same as that of the color layer 104.
It should be noted that, unlike the first structural region, the second structural region may not be provided with the plating layer 105, which does not have any influence on the hiding and displaying of the security code.
The color layer 104 is arranged close to the transparent identification layer 103, in this embodiment, the color layer is formed by mixing thermoplastic resin with a softening point of 120-250 ℃ and metal complex dye, wherein the thermoplastic resin can be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene and styrene-acrylic copolymer, the mass of the metal complex dye accounts for 5-25% of the total mass of the thermoplastic resin and the metal complex dye, the color of the metal complex dye is not particularly limited, and the color can be arbitrarily selected according to the requirement.
In order to ensure that the first optically variable information layer 102, the transparent identification layer 103 and the color layer 104 can be smoothly separated, in this embodiment, the peeling value between the first optically variable information layer 102, the transparent identification layer 103 and the color layer 104 is set to be 0.1 to 0.5 n/cm. If the peeling value is too small, the adhesion force between the first optically variable information layer 102 and the transparent identification layer 103 and the color layer 104 is insufficient, delamination is easy to occur, and if the peeling value is too large, a user cannot smoothly uncover the first optically variable information layer 102 and the transparent identification layer 103, and both conditions can influence the product quality of the encrypted digital identification.
In order to ensure that the first optically variable information layer 102 and the color layer 104 can be smoothly separated by the base film layer 101 and the transparent identification layer 103 and the color layer 104 can be separated by the base film layer 101, the surface of the base film layer 101 needs to have a certain roughness to ensure that the base film layer 101 has a certain degree of bonding force with the first optically variable information layer 102 and the base film layer 101 and the transparent identification layer 103, and therefore, in the embodiment, the surface dyne value of the base film layer 101 is more than 48 and the thickness is 15-30 um.
In this embodiment, the surface of the plating layer 105 in the first structural area, the plating layer 105 or the color layer 104 in the second structural area is further provided with a self-adhesive layer 106, and the self-adhesive layer 106 is mainly used for attaching the encrypted digital mark to the surface of the identifier. Further, the surface of the adhesive layer 106 is compounded with silicone paper to obtain a complete encrypted digital mark, and when the adhesive is used, the encrypted digital mark can be attached to the surface of the mark through the adhesive layer 106 by removing the silicone paper.
The encrypted digital mark provided by the embodiment can observe the holographic pattern in the first structural area through the base film layer before being uncovered, the anti-counterfeiting code in the second structural area is hidden and cannot be directly observed, and after being uncovered, the anti-counterfeiting code information hidden by the second microstructure in the second structural area is separated from the color layer, so that the visible colored anti-counterfeiting code is displayed on the color layer. In the scheme, the anti-counterfeiting image and the anti-counterfeiting code are positioned on the same layer, so that the anti-counterfeiting image and the anti-counterfeiting code are prevented from being pasted back for use after being uncovered, and the anti-counterfeiting image and the anti-counterfeiting code are developed after being exposed, thereby being beneficial to distinguishing whether the mark is used or not.
The embodiment also provides a preparation method of the encrypted digital identifier, which specifically comprises the following steps:
Providing a base film layer 101, forming a first microstructure on a first area of the base film layer 101, and forming a transparent second microstructure on a second area of the base film layer 101;
the base film layer 101 is made of a transparent film material suitable for processing laser holographic patterns, the thickness of the base film layer is 15-30 um, and the surface dyne value of the base film layer is greater than 48.
Coating a color layer 104 on the first microstructure and the second microstructure, wherein the color layer 104 respectively permeates into gaps of the first microstructure and the second microstructure;
The color layer is formed by mixing thermoplastic resin with a softening point of 120-250 ℃ and metal complex dye, wherein the thermoplastic resin can be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene and styrene-acrylic copolymer, and the mass of the metal complex dye accounts for 5-25% of the total mass of the thermoplastic resin and the metal complex dye.
Step three, a plating layer 105 is formed on the surface of the color layer 104, and under the action of the plating layer 105, a first microstructure forms and displays a holographic pattern with anti-counterfeiting effect;
The plating layer 105 is a metal aluminum layer with the aluminum value thickness of 300-500 AI or a dielectric layer with the light transmittance of 60-80%, and the dielectric layer is one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide.
When the first microstructure and the second microstructure are separated from the color layer 104 by the base film layer 101, the first microstructure can form a holographic pattern on the surface of the color layer 104, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer 104, wherein the color of the holographic pattern and the anti-counterfeiting code is the same as that of the color layer 104.
And fourthly, coating the non-setting adhesive on the coating 105 to form a non-setting adhesive layer 106, and displaying the composite silicone paper on the non-setting adhesive layer 106 to obtain the encrypted digital mark.
The following is a specific preparation process of the preparation method of the encrypted digital mark, and the preparation process specifically comprises the following steps:
1) Positioning and coating UV ink on a base film layer, transferring a holographic pattern to a first area on the base film layer through a metal nickel plate, and performing ultraviolet light curing to obtain a general information area;
2) Spraying transparent UV ink on a second area without UV ink on the base film layer, and then curing and shaping by ultraviolet light, wherein the pattern formed by the transparent ink is an anti-counterfeiting code carrying digital information and is a specific information area;
3) Coating color layers on the general information area and the specific information area, specifically coating a solution consisting of thermoplastic acrylic resin with a softening point of 120-250 ℃, metal complex dye and organic solvent on the general information area and the specific information area by using a coating machine, and drying by infrared heating to obtain the color layers;
4) Vacuum aluminizing or dielectric ZnS on the surface of the color layer;
5) Coating non-setting adhesive on the aluminum layer or the dielectric layer, and then compounding silicone paper to obtain the encrypted digital mark.
Example two
The encrypted digital identifier provided by the embodiment comprises a base film layer and an information layer which are sequentially stacked. The information layer includes a first structure area, a second structure area and a third structure area, wherein the first structure area and the second structure area are the same as those in the first embodiment, and the composition and the function of the third structure area are further described in detail below.
According to the different preparation processes, the composition of the third structural region mainly comprises the following two types:
(1) The first structure is shown in fig. 3, which is a cross-sectional view of a first structure area of the encrypted digital mark, the first structure area comprises a second optically variable information layer 107 and a plating layer 105 which are sequentially stacked, the second optically variable information layer 107 is formed on the surface of the base film layer 101, and the third structure area has a third microstructure capable of displaying a positioning mark under the action of the plating layer 105.
The second optically variable information layer 107 is attached to the base film layer 101 and is a carrier of the third microstructure in this embodiment, and in this embodiment, one or more third microstructures capable of forming a positioning cursor with a positioning function are disposed on a side of the second optically variable information layer 107 away from the base film layer 101. In a specific example, the third microstructure is obtained by UV curing after transferring the holographic pattern from the master.
The primary function of the coating 105 is to prevent light from passing completely through, and when the encrypted digital mark is in use, after the light is incident, reflection is formed at the interface between the coating 105 and the third microstructure, so that a positioning cursor can be presented. Under the influence of the plating layer 105, this third microstructure may form a positioning cursor that is directly observable through the base film layer 101. The shape of the positioning cursor is not particularly limited, and when the encrypted digital mark is attached to the mark by a manufacturer of the mark, the position of the encrypted digital mark can be identified and positioned through the positioning cursor, so that accurate attachment is realized.
The plating layer 105 may be a metal aluminum layer or a dielectric layer, and the metal aluminum layer and the dielectric layer may be prepared by vacuum evaporation. When a metal aluminum layer is used, the thickness of the aluminum value is 300-500 AI. The dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%.
The embodiment also provides a preparation method of the encrypted digital identifier, which specifically comprises the following steps:
Providing a base film layer 101, forming a first microstructure and a third microstructure on a first area and a third area of the base film layer 101 respectively, and forming a transparent second microstructure on a second area of the base film layer 101;
the base film layer 101 is made of a transparent film material suitable for processing laser holographic patterns, the thickness of the base film layer is 15-30 um, and the surface dyne value of the base film layer is greater than 48.
Coating a color layer 104 on the first microstructure and the second microstructure, wherein the color layer 104 respectively permeates into gaps of the first microstructure and the second microstructure;
The color layer is formed by mixing thermoplastic resin with a softening point of 120-250 ℃ and metal complex dye, wherein the thermoplastic resin can be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene and styrene-acrylic copolymer, and the mass of the metal complex dye accounts for 5-25% of the total mass of the thermoplastic resin and the metal complex dye.
Forming a plating layer 105 on the surfaces of the color layer 104 and the third microstructure, forming and displaying a holographic pattern with an anti-counterfeiting effect on the first microstructure under the action of the plating layer 105, and forming and displaying a positioning mark on the third microstructure;
The plating layer 105 is a metal aluminum layer with the aluminum value thickness of 300-500 AI or a dielectric layer with the light transmittance of 60-80%, and the dielectric layer is one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide.
When the first microstructure and the second microstructure are separated from the color layer 104 by the base film layer 101, the first microstructure can form a holographic pattern on the surface of the color layer 104, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer 104, wherein the color of the holographic pattern and the anti-counterfeiting code is the same as that of the color layer 104.
And fourthly, coating the non-setting adhesive on the coating 105 to form a non-setting adhesive layer 106, and displaying the composite silicone paper on the non-setting adhesive layer 106 to obtain the encrypted digital mark.
The following are several specific preparation processes of the preparation method of the encrypted digital mark:
Process 1:
The preparation method of the encrypted digital mark comprises the following steps:
1) Coating UV ink on a base film layer with the thickness of 15u and the surface dyne value of 48 through a sleeve position, transferring holographic patterns and positioning cursors of a first structural area and a third structural area through a metal nickel plate, and obtaining a general information area through ultraviolet curing with the power of 60% -80%;
2) The UV ink-free area, namely a second structural area, on the base film layer is sprayed with transparent UV ink through a UV coding machine, and is solidified and shaped through ultraviolet light with the power of 70% -80%, and the pattern formed by the transparent ink is a two-dimensional code or a bar code carrying digital information and is a specific information area;
3) Coating a color layer on the first and second structural areas by using a customized anilox roller, namely, a solution consisting of thermoplastic acrylic resin with a softening point of 120 ℃, metal complex dye and organic solvent according to a mass ratio of 20:5:75, feeding by using a coating machine, and heating and drying by infrared 140 ℃ to obtain the color layer, wherein the actual stripping value of the color layer is measured to be 0.2N/m < 2 >;
4) Vacuum aluminizing the surfaces of the color layer and the third structural area to a thickness of 500AI;
5) Coating non-setting adhesive on the aluminum layer, and then compounding silicone paper to obtain the encrypted digital mark.
Process 2
The preparation method of the encrypted digital mark comprises the following steps:
1) Coating UV ink on a base film layer with the thickness of 30u and the surface dyne value of 48 through a sleeve position, transferring holographic patterns and positioning cursors of a first structural area and a third structural area through a metal nickel plate, and obtaining a general information area through ultraviolet curing with the power of 60% -80%;
2) The UV ink-free area, namely a third structural area, on the base film is sprayed with transparent UV ink through a UV coding machine, and is solidified and shaped through ultraviolet light with the power of 70% -80%, and the pattern formed by the transparent ink is a two-dimensional code or a bar code carrying digital information and is a specific information area;
3) Coating a color layer on the first and second structural areas by using a customized anilox roller, namely, a solution consisting of thermoplastic acrylic resin with a softening point of 200 ℃, metal complex dye and organic solvent according to a mass ratio of 19:1:80, feeding by using a coating machine, and heating and drying by infrared 140 ℃ to obtain the color layer, wherein the actual stripping value of the color layer is measured to be 0.5N/m < 2 >;
4) Vacuum aluminizing the surfaces of the color layer and the third structural area to 300AI;
5) Coating non-setting adhesive on the aluminum layer, and then compounding silicone paper to obtain the encrypted digital mark.
Process 3
The preparation method of the encrypted digital mark comprises the following steps:
1) Coating UV ink on a base film layer with the thickness of 23u and the surface dyne value of 48 through a sleeve position, transferring holographic patterns and positioning cursors of a first structural area and a third structural area through a metal nickel plate, and obtaining a general information area through ultraviolet curing with the power of 60% -80%;
2) The UV ink-free area, namely a second structural area, on the base film is sprayed with transparent UV ink through a UV coding machine, and is solidified and shaped through ultraviolet light with the power of 70% -80%, and the pattern formed by the transparent ink is a two-dimensional code or a bar code carrying digital information and is a specific information area;
3) Coating a color layer on the first and second structural areas by using a customized anilox roller, namely, a solution consisting of thermoplastic acrylic resin with a softening point of 250 ℃, metal complex dye and organic solvent according to a mass ratio of 15:5:80, feeding by using a coating machine, and heating and drying by infrared 140 ℃ to obtain the color layer, wherein the measured stripping value of the color layer is 0.1N/m < 2 >;
4) Plating a vacuum medium ZnS on the surfaces of the color layer and the third structural area, wherein the light transmittance is 80%;
5) Coating non-setting adhesive on ZnS dielectric layer, and compounding with silicone paper to obtain the encrypted digital mark.
(2) Fig. 4 is a cross-sectional view of a first structure of a third structure area in the encrypted digital mark, and referring to fig. 4, the first structure area includes a second optically variable information layer 107, a plating layer 108, a color layer 104 and a plating layer 105, which are sequentially stacked, and the second optically variable information layer 107 is formed on the surface of the base film layer 101 and has a third microstructure capable of displaying a positioning mark under the action of the plating layer 108.
The second optically variable information layer 107 is attached to the base film layer 101 and is a carrier of the third microstructure in this embodiment, and in this embodiment, one or more third microstructures capable of forming a positioning cursor with a positioning function are disposed on a side of the second optically variable information layer 107 away from the base film layer 101. In a specific example, the third microstructure is obtained by UV curing after transferring the holographic pattern from the master.
The effect of the coating 108 in this embodiment is the same as that of the coating 105 in the first structure, and the main effect is to prevent light from completely passing through, and when the encrypted digital mark is in use, after light is incident, reflection is formed at the interface between the coating 108 and the third microstructure, so that the positioning cursor can be presented. Under the influence of the plating layer 108, this third microstructure may form a positioning cursor that is directly observable through the base film layer 101. The shape of the positioning cursor is not particularly limited, and when the encrypted digital mark is attached to the mark by a manufacturer of the mark, the position of the encrypted digital mark can be identified and positioned through the positioning cursor, so that accurate attachment is realized.
In this structure, the purpose of providing the plating layer 108 between the second optically variable information layer 107 and the color layer 104 is to allow the positioning cursor on the second optically variable information layer 107 to appear through the base film layer 101, while the plating layer 105 and the second optically variable information layer 107 are separated by the color layer 104, and therefore the plating layer 105 cannot exert the same function as the plating layer 108.
The plating layer 108 may be a metal aluminum layer or a dielectric layer, and the metal aluminum layer and the dielectric layer may be prepared by vacuum evaporation. When a metal aluminum layer is used, the thickness of the aluminum value is 300-500 AI. The dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%. The composition and structure of the plating layer 105 may be the same as or different from the plating layer 108, and in this embodiment, the composition and structure of the plating layer 105 are identical to those of the plating layer 108 for the convenience of the manufacturing process.
In the first and second structures, the surface of the plating layer 105 is further provided with a self-adhesive layer 106, and the self-adhesive layer 106 is mainly used for attaching the encrypted digital mark to the surface of the marker. Further, the surface of the adhesive layer 106 is compounded with silicone paper to obtain a complete encrypted digital mark, and when the adhesive is used, the encrypted digital mark can be attached to the surface of the mark through the adhesive layer 106 by removing the silicone paper.
The embodiment also provides a preparation method of the encrypted digital identifier, which specifically comprises the following steps:
Providing a base film layer 101, forming a first microstructure and a third microstructure on a first area and a third area of the base film layer 101 respectively, and forming a transparent second microstructure on a second area of the base film layer 101;
the base film layer 101 is made of a transparent film material suitable for processing laser holographic patterns, the thickness of the base film layer is 15-30 um, and the surface dyne value of the base film layer is greater than 48.
Step two, forming a plating layer 108 on the first microstructure, the second microstructure and the third microstructure, removing the plating layer 108 on the first microstructure and the second microstructure, and reserving the plating layer 108 on the third microstructure;
coating a color layer 104 on the first microstructure, the second microstructure and the second plating layer, wherein the color layer 104 respectively permeates into gaps of the first microstructure and the second microstructure;
The color layer is formed by mixing thermoplastic resin with a softening point of 120-250 ℃ and metal complex dye, wherein the thermoplastic resin can be any one or more of acrylic resin, polyester resin, polyurethane, polystyrene and styrene-acrylic copolymer, and the mass of the metal complex dye accounts for 5-25% of the total mass of the thermoplastic resin and the metal complex dye.
Step three, a plating layer 105 is formed on the surface of the color layer 104, and under the action of the plating layer 105, a first microstructure forms and displays a holographic pattern with anti-counterfeiting effect;
The plating layer 105 is a metal aluminum layer with the aluminum value thickness of 300-500 AI or a dielectric layer with the light transmittance of 60-80%, and the dielectric layer is one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide.
When the first microstructure and the second microstructure are separated from the color layer 104 by the base film layer 101, the first microstructure can form a holographic pattern on the surface of the color layer 104, and the second microstructure can form an anti-counterfeiting code on the surface of the color layer 104, wherein the color of the holographic pattern and the anti-counterfeiting code is the same as that of the color layer 104.
And fourthly, coating the non-setting adhesive on the coating 105 to form a non-setting adhesive layer 106, and displaying the composite silicone paper on the non-setting adhesive layer 106 to obtain the encrypted digital mark.
Process 4
The preparation method of the encrypted digital mark comprises the following steps:
1) Coating UV ink on a base film layer with the thickness of 23u and the surface dyne value of 48 through a sleeve position, transferring holographic patterns and positioning cursors of a first structural area and a third structural area through a metal nickel plate, and obtaining a general information area through ultraviolet curing with the power of 60% -80%;
2) The UV ink-free area, namely a second structural area, on the base film is sprayed with transparent UV ink through a UV coding machine, and is solidified and shaped through ultraviolet light with the power of 70% -80%, and the pattern formed by the transparent ink is a two-dimensional code or a bar code carrying digital information and is a specific information area;
3) Vacuum aluminizing the first, second and third structural areas, and obtaining an information layer of which only the aluminum layer of the third structural area is not washed off by a positioning aluminum washing technology, wherein the aluminum layer plays a role in protecting the brightness of a positioning cursor of the third structural area;
3) Coating a color layer on the aluminized layers of the first structure area, the second structure area and the third structure area, namely, a solution consisting of thermoplastic acrylic resin with a softening point of 150 ℃, metal complex dye and organic solvent according to a mass ratio of 18:2:80, feeding by a coating machine, and heating and drying by infrared 140 ℃ to obtain the color layer, wherein the actual stripping value measured by the color layer is 0.25N/m < 2 >;
4) Evaporating a medium ZnS on the surface of the color layer in a vacuum way, wherein the light transmittance is 60%;
5) Coating non-setting adhesive on ZnS dielectric layer, and compounding with silicone paper to obtain the encrypted digital mark.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. An encrypted digital mark comprises a base film layer and an information layer, and is characterized in that the information layer comprises a first structural area and a second structural area;
The first structure area comprises a first optically variable information layer, a color layer and a first plating layer which are sequentially stacked, wherein the first optically variable information layer is formed on the surface of the base film layer, is provided with a first microstructure capable of displaying holographic patterns under the action of the first plating layer, and is embedded into the color layer;
The second structure area comprises a transparent identification layer, a color layer and a first plating layer which are sequentially stacked, wherein the transparent identification layer is formed on the surface of the base film layer and is provided with a transparent second microstructure capable of forming anti-fake codes, and the second microstructure is embedded into the color layer;
after the first optically variable information layer, the transparent identification layer and the color layer are separated by the base film layer, a holographic pattern is formed on the surface of the color layer by the first microstructure on the first optically variable information layer, and an anti-counterfeiting code is formed on the surface of the color layer by the second microstructure on the transparent identification layer.
2. The encrypted digital identifier according to claim 1, wherein the information layer comprises a third structured area;
The third structure region comprises a second optically variable information layer and a first plating layer which are sequentially stacked, wherein the second optically variable information layer is formed on the surface of the base film layer and is provided with a third microstructure capable of displaying positioning marks under the action of the first plating layer.
3. The encrypted digital identifier according to claim 1, wherein the information layer comprises a third structured area;
the third structure region comprises a second optically variable information layer, a second plating layer, a color layer and a first plating layer which are sequentially stacked, wherein the second optically variable information layer is formed on the surface of the base film layer and is provided with a third microstructure capable of displaying positioning marks under the action of the second plating layer.
4. The encrypted digital signature as recited in claim 1 wherein the first optically variable information layer, the transparent identification layer and the color layer have a peel-off value of 0.1 to 0.5n/cm.
5. The encrypted digital sign according to claim 1, wherein the color layer is formed by mixing a thermoplastic resin with a softening point of 120-250 ℃ and a metal complex dye, wherein the mass ratio of the metal complex dye is 5% -25%.
6. The encrypted digital identifier according to claim 5, wherein the thermoplastic resin is selected from one or more of acrylic resin, polyester resin, polyurethane, polystyrene, and styrene-acrylic copolymer.
7. The encrypted digital identifier according to any one of claims 1 to 6, wherein the plating layer is a metallic aluminum layer or a dielectric layer;
The thickness of the aluminum value of the metal aluminum layer is 300-500 AI;
the dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide, and the light transmittance of the dielectric layer is 60-80%.
8. The preparation method of the encrypted digital mark is characterized by comprising the following steps:
s1, providing a base film layer, forming a first microstructure on a first area of the base film layer, and forming a transparent second microstructure on a second area of the base film layer;
S2, coating a color layer on the first microstructure and the second microstructure, wherein the color layer respectively permeates into gaps of the first microstructure and the second microstructure;
s3, forming a first plating layer on the surface of the color layer, and forming and displaying a holographic pattern by a first microstructure under the action of the first plating layer;
After the first microstructure, the second microstructure and the color layer are separated through the base film layer, the first microstructure can form holographic patterns on the surface of the color layer, and the second microstructure can form anti-counterfeiting codes on the surface of the color layer.
9. The preparation method of the encrypted digital mark is characterized by comprising the following steps:
s1, providing a base film layer, forming a first microstructure and a third microstructure on a first area and a third area of the base film layer respectively, and forming a transparent second microstructure on a second area of the base film layer;
S2, coating a color layer on the first microstructure and the second microstructure, wherein the color layer respectively permeates into gaps of the first microstructure and the second microstructure;
s3, forming a first plating layer on the surfaces of the color layer and the third microstructure, forming and displaying holographic patterns by the first microstructure under the action of the first plating layer, and forming and displaying positioning marks by the third microstructure;
After the first microstructure, the second microstructure and the color layer are separated through the base film layer, the first microstructure can form holographic patterns on the surface of the color layer, and the second microstructure can form anti-counterfeiting codes on the surface of the color layer.
10. The preparation method of the encrypted digital mark is characterized by comprising the following steps:
s1, providing a base film layer, forming a first microstructure and a third microstructure on a first area and a third area of the base film layer respectively, and forming a transparent second microstructure on a second area of the base film layer;
S2, forming a second coating on the first microstructure, the second microstructure and the third microstructure, removing the second coating on the first microstructure and the second microstructure, and reserving the second coating on the third microstructure;
s3, coating a color layer on the first microstructure, the second microstructure and the second plating layer, wherein the color layer respectively permeates into gaps of the first microstructure and the second microstructure;
S4, forming a first plating layer on the surface of the color layer, and forming and displaying a holographic pattern by a first microstructure under the action of the first plating layer;
After the first microstructure, the second microstructure and the color layer are separated through the base film layer, the first microstructure can form holographic patterns on the surface of the color layer, and the second microstructure can form anti-counterfeiting codes on the surface of the color layer.
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| EP1855127A1 (en) * | 2006-05-12 | 2007-11-14 | Rolic AG | Optically effective surface relief microstructures and method of making them |
| US20080258457A1 (en) * | 2006-09-08 | 2008-10-23 | De La Rue International Limited | Method of manufacturing a security device |
| DE102008008685A1 (en) * | 2008-02-12 | 2009-08-13 | Giesecke & Devrient Gmbh | Security element and method for its production |
| CN102514443B (en) * | 2011-12-09 | 2015-04-29 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element |
| KR101369070B1 (en) * | 2012-01-19 | 2014-03-03 | 홍우석 | Film and method for manufactruing thereof |
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| KR102461312B1 (en) * | 2018-04-06 | 2022-11-01 | 주식회사 나노브릭 | Hologram Label for Anti-Counterfeit Comprising Magnetic Color-Changeable Pigments |
| CN208271453U (en) * | 2018-06-12 | 2018-12-21 | 中山市安美信息技术有限公司 | Multiple anti-counterfeiting labels |
| CN111681531B (en) * | 2020-06-24 | 2022-04-29 | 武汉华工图像技术开发有限公司 | Optically variable anti-counterfeiting two-dimensional code identifier and preparation method thereof |
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