JP5293170B2 - Method for manufacturing laminate having printing information layer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminated body provided with a print information layer which is excellent in productivity, does not cause omission or blot of print information on the print information layer, moreover, is concealed from the outer surface side of a packaging bag, and is visualized from only the inner surface side, and also to provide a method of manufacturing the laminated body provided with print information layer. <P>SOLUTION: The laminated body is provided with the print information layer which is made by laminating a first film having a pattern print layer and a concealed layer onto a second film having a print information layer formed by an inkjet printer and a heat-adhesive resin layer formed on the inner layer via an adhesive layer, and visualizes print information on the print information layer only from the second film side. The method of manufacturing the laminated body provided with print information layer is also provided. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to a laminate used for a packaging bag for packaging contents such as foods and a method for producing the same, and more specifically, printing information such as letters, symbols, and patterns representing lottery numbers is formed on the laminate, The purchaser of the product can receive the provision of services and giveaways by visually checking the printed information, or can be used suitably for sales promotion by obtaining the qualification to receive and is concealed from the outer side of the packaging bag. a method of manufacturing a laminate having a visible printed information layer only from.

Conventionally, as a packaging bag that can be suitably used for sales promotion, for example, information such as letters, symbols, patterns, etc. corresponding to “hit” and “out” is printed on the outer surface of the laminate used for the packaging bag. Form a concealing release layer from the top or attach a concealing adhesive seal so that the above information is not visible from the outside, scrape the concealing release layer, or peel off the adhesive seal Thus, there is known a configuration in which information such as “win” and “out of” can be confirmed.
However, in the above method, the purchaser of the product usually cuts out the “around” part and sends it to the destination specified by the seller etc., which is troublesome and troublesome for the purchaser. There was a drawback. In recent years, with the remarkable spread of the Internet and mobile phones, application methods for sweepstakes using the Internet and mobile phones have been adopted.

For example, the thermoadhesive resin layer of the 1st film which consists of a transparent laminated body provided with the 1st film used as a base film layer, and the 2nd film used as a thermoadhesive resin layer in an inner layer, and becomes a base film layer A masking layer is partially provided by printing ink on the side surface to form a masking area, and at least a masking area is provided with a white solid printing layer, and an identification character string is printed by an ink jet printer on the masking white printing layer. A packaging material having printing information such as an identification character string that cannot be confirmed from the outer surface side but can be confirmed from the inner surface side is known (for example, patent document) 1).
In addition, at least a first film that becomes an outermost film layer, a transparent barrier layer, and a second film that becomes a heat-adhesive resin layer (heat seal layer) are sequentially laminated to form an outermost film layer. A concealing layer composed of an ink layer, a white ink layer, and a printing information layer printed by an ink jet recording method are provided on at least a part of the back surface of one film in order from the outermost film layer side, and the heat seal layers face each other. A packaging container having printing information to be overlapped and sealed is known (for example, see Patent Document 2).

However, in both techniques of Patent Documents 1 and 2, since the printing information is formed on the side of the first film that is laminated with the second film, an adhesive is coated on the printing information forming surface of the first film. When forming the adhesive layer by applying the adhesive layer, there is a risk that a part of the print information may be transferred to the coating roll side and missing, or the print information may not be visible due to bleeding due to the applied adhesive. There is a drawback. This can be solved by applying an adhesive on the second film side to form an adhesive layer, but since the second film has a thermal adhesive resin layer, when applying and drying the adhesive, It is necessary to dry at a low temperature that does not soften the heat-adhesive resin layer.In order to sufficiently dry it, low-speed production results in poor productivity, and the heat-adhesive resin layer tends to stretch due to heating during drying. After laminating with the first film, the laminate is easy to curl, and the quality of post-processing is reduced, and when the packaging bag is made, curling of the opening of the packaging bag makes it difficult to seal the opening. In reality, it is necessary to apply an adhesive to the first film.
JP 2004-18058 A JP 2004-67219 A

In view of the conventional problems as described above, the present invention is excellent in production efficiency, has no print information missing or bleeding, and is hidden from the outer surface side of the packaging bag, only from the inner surface side. It is providing the manufacturing method of the laminated body provided with the printing information layer which can be visually recognized.

In order to solve the above-mentioned problems, the present invention according to claim 1 has a first film having a pattern printing layer and a concealing layer, a print information layer formed by an ink jet printer, and a heat adhesive resin layer in an inner layer. A method for producing a laminate comprising a second film and a print information layer that is laminated via an adhesive layer, and the print information of the print information layer is visible only from the second film side. A printing information layer is formed by printing the printing information on the surface of the second film laminated on the first film using an ink jet printer in synchronization with the concealing layer of the first film. In addition, an adhesive is applied to the surface of the first film to be laminated on the second film, dried to form an adhesive layer, and then the concealment formed on the first film. The adhesive layer surface formed on the first film and the print information layer surface formed on the second film are overlapped so that the layer covers the print information layer formed on the second film, It is characterized by being laminated by pressure bonding .

The present invention according to claim 2 is a second film having a base material layer having a pattern printing layer, a concealing intermediate layer, a print information layer formed by an ink jet printer, and a heat adhesive resin layer as an inner layer. Are laminated via an adhesive layer, and a method for producing a laminate comprising a print information layer in which print information of the print information layer is visible only from the second film side , the substrate layer and After laminating the intermediate layer, using a laminator equipped with an ink jet printer, the print information is synchronized with the pattern layer of the base material layer with the ink jet printer on the surface laminated on the intermediate layer of the second film. And forming a print information layer, applying an adhesive on the surface of the intermediate layer laminated on the second film, drying, forming an adhesive layer, and then forming the adhesive layer on the intermediate layer adhesive Overlapped and formed surface and the second film the print information layer surface are opposed, is characterized in that the stacking by crimping.

According to a third aspect of the present invention, the first film having a pattern printing layer and a concealing layer, the print information layer formed by an ink jet printer, and the second film having a thermal adhesive resin layer on the inner layer are adhesives. A method for producing a laminate comprising a print information layer that is laminated through layers and the print information of the print information layer is visible only from the second film side , using an extrusion laminator equipped with an ink jet printer. Te, thereby forming the said tuned to concealing layer by printing the print information print information layer of the first film by an inkjet printer to the surface laminated on the first film of the second film, the first film wherein a surface of the masking layer that is formed is laminated on the second film of the first film so as to cover the print information layer formed on the second film No. It is characterized in that laminating a thermoplastic resin through melt extrusion formed adhesive layer between the print information layer surface formed on the film.

The present invention described in claim 4 is a second film having a base material layer having a pattern printing layer, a concealing intermediate layer, a printing information layer formed by an ink jet printer, and a heat adhesive resin layer in an inner layer. Are laminated via an adhesive layer, and a method for producing a laminate comprising a print information layer in which print information of the print information layer is visible only from the second film side , the substrate layer and After laminating the intermediate layer, using an extrusion laminator equipped with an ink jet printer, the surface of the second film to be laminated on the intermediate layer is synchronized with the pattern layer of the base material layer by the ink jet printer. with printed information to form a print information layer, through an adhesive layer a thermoplastic resin is melt extruded formed between the intermediate layer surface and said print information layer surface formed on the second film It is characterized in that the layer.

Moreover, this invention of Claim 5 is a manufacturing method of the laminated body provided with the printing information layer in any one of Claims 1 thru | or 4, Comprising : A said 2nd film is from a thermoadhesive resin layer. those characterized by comprising.

Further, in the present invention described in claim 5 , in the method for manufacturing a laminate including the print information layer according to any one of claims 1 to 4, the second film is formed of a thermoadhesive resin layer. It is characterized by.

The manufacturing method of the laminated body provided with the printing information layer of this invention is the 1st film which has a pattern printing layer and a concealment layer, the printing information layer formed with the inkjet printer, and the 2nd which has a thermoadhesive resin layer in an inner layer. A method of manufacturing a laminate including a print information layer that is laminated with an adhesive layer and the print information of the print information layer is visible only from the second film side, or a pattern print layer A substrate layer, a concealing intermediate layer, a print information layer formed by an ink jet printer, and a second film having a heat adhesive resin layer on the inner layer are laminated via an adhesive layer, and the print information By adopting a method for producing a laminate having a print information layer in which the print information of the layer is visible only from the second film side, the productivity is excellent, and there is no missing or blurring of the print information in the print information layer. With laminate Rukoto can. Moreover, the print information cannot be confirmed from the outer surface side of the laminate, can be viewed only from the inner surface side, and there is an effect that confidentiality that cannot be seen by others other than the purchaser and fraud of others can be prevented. Further, the print information layer is laminated between the first film and the second film, and can be a laminate in which the print information layer does not fall off from manufacture to sale and has an anti-tampering effect. . Furthermore, by adopting a configuration in which the print information layer is formed by the ink jet printer, the print information can be easily generated as variable information such as an identification character string, a symbol, a pattern, or the like, which is made up of random numbers.

Further, by using a laminator having a Lee inkjet printer, said tuned to hiding layer prints the print information of the first film by an inkjet printer to the surface to be laminated on the first film of the second film The concealment formed on the first film after forming a print information layer, applying an adhesive to the surface of the first film laminated on the second film, drying and forming an adhesive layer The adhesive layer surface formed on the first film and the print information layer surface formed on the second film are overlapped so that the layer covers the print information layer formed on the second film, By laminating by the dry lamination method for pressure bonding, no adhesive is applied to the surface of the print information layer formed on the second film. No missing or bleeding of occurrence of character information, yet by applying an adhesive to a first film side, and excellent production efficiency enables high-speed production because it dried at elevated temperature.
Also, the present invention described in claim 2, a method for producing a laminate having a Rishirushi character information layer by the dry lamination method, applying an adhesive to the print information layer surface formed on the second film Since there is no, there is the above effect.

According to a third aspect of the present invention, an extrusion laminator provided with an ink jet printer is used to print on the surface of the second film laminated on the first film in synchronization with the concealing layer of the first film with the ink jet printer. The information is printed to form a print information layer, and the concealing layer formed on the first film covers the print information layer formed on the second film on the second film of the first film. By laminating by an extrusion lamination method in which a thermoplastic resin is laminated via an adhesive layer formed by melt extrusion between the surface to be laminated and the print information layer surface formed on the second film, Since no adhesive is applied to the surface of the print information layer formed on the second film, there is no missing or blurring of print information on the print information layer, It becomes the duck productivity is excellent.
Further, the invention of claim 4 is a method for producing a laminate having a Rishirushi character information layer by the extrusion lamination method, applying an adhesive to the print information layer surface formed on the second film Since there is no, there is the above effect.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view seen from the inner surface side showing a first embodiment of a laminate provided with a printing information layer obtained by the manufacturing method according to the present invention, and FIG. 2 is a sectional view taken along line XX in FIG. FIG. 3 is a perspective view showing an embodiment of a packaging bag produced using the laminate shown in FIG. 1, and FIG. 4 is printing information obtained by the manufacturing method according to the present invention. Sectional drawing equivalent to FIG. 2 which shows 2nd embodiment of the laminated body provided with the layer, FIG. 5 is description which shows the principal part outline of one Embodiment of the manufacturing method of the laminated body provided with the printing information layer based on this invention. FIG. 6 and FIG. 6 are explanatory views showing an outline of the main part of another embodiment of the method for producing a laminate having a print information layer according to the present invention. In the figure, reference numeral 1 is 1, 1 'is a laminate having a print information layer, 2 is a packaging bag, 3 is a back seal part, 4 is an upper / lower seal part, 10 is a first film, and 10a is a first film. , 11 and 11 ′ are substrate layers, 12 are concealing layers, 13 and 13 ′ are pattern printing layers, 14 is an intermediate layer, 20 is a second film, and 20a is a second film. The surface laminated on the first film, 21 is a heat-adhesive resin layer, 22 is a printing information layer, 30 is an adhesive layer, 40 is a drying device, 41 is a second paper feeding device, 42 is a laminating unit, 42a and 42b Is a nip roll, 43 is a winding device, 44 and 54 are photoelectric tube mark detectors, 45 and 55 are inkjet printers, 50 is a T die, 51 is a second paper feeding device, 52 is a laminating unit, 52a is a nip roll, and 52b is a chill roll. , 55 is the second paper feeder, and I is the printing information. , A is shows the hidden area, respectively.

As shown in FIGS. 1 and 2, the laminate 1 provided with the print information layer of the first embodiment obtained by the production method of the present invention has one surface of the base material layer 11 constituting the first film 10. A concealing layer 12 is partially provided on the surface to form a concealing region A, and a pattern printing layer 13 is formed on the entire surface on which the concealing layer 12 is provided. An identification character string is printed as print information I on the surface of the thermal adhesive resin layer 21 constituting the second film 20 on the pattern print layer 13 side by using an ink jet printer with black ink, and a print information layer 22 is formed. . The pattern print layer 13 surface formed on the first film and the print information layer 22 formed on the second film synchronize the print information layer 22 with the concealment layer 12 via the adhesive layer 30 and the first film and the first film. Two films are laminated. That is, since the print information layer 22 of the laminate 1 including the print information layer is covered with the concealment area A (the area within the dotted line in FIG. 1) formed on the first film, from the first film side which is the outer surface side. The print information I cannot be confirmed and is visible only from the second film side which is the inner surface side.

In the first embodiment, the first film is the base material layer 11 and the second film is the thermoadhesive resin layer 21, and the case of the two-layer configuration is shown, but the present invention is not limited to this, and the base material layer 11 may be a first film in which a first intermediate layer is laminated. In this case, the masking layer 12 and the pattern printing layer 13 may be provided on the base material layer 11 or the first intermediate layer. Moreover, the 2nd film can also be made into the thermoadhesive resin layer 21 in an inner layer, and can laminate | stack a 2nd intermediate | middle layer on the 1st film side. In this case, the print information layer 22 may be provided on the second intermediate layer side. Furthermore, the hiding layer 12 and the pattern printing layer 13 may be provided on the outer surface side of the base material layer 11. That is, the masking layer 12 and the pattern printing layer 13 may be either front printing or back printing. Further, the print information is not limited to the identification character string, and characters, symbols, designs, and the like can be used. The structural example of 1st embodiment is shown below.
(1) 1st film (base material layer / hiding layer / design printing layer) / adhesive layer / second film (printing information layer / thermal adhesive resin layer)
(2) First film (hiding layer / design printing layer / base material layer) / adhesive layer / second film (printing information layer / thermal adhesive resin layer)
(3) 1st film (base material layer / adhesive layer / first intermediate layer / hiding layer / pattern printing layer) / adhesive layer / second film (printing information layer / thermal adhesive resin layer)
(4) 1st film (hiding layer / design printing layer / base material layer / adhesive layer / first intermediate layer) / adhesive layer / second film (printing information layer / thermoadhesive resin layer)
(5) 1st film (base material layer / hiding layer / pattern printing layer) / adhesive layer / second film (printing information layer / second intermediate layer / adhesive layer / thermal adhesive resin layer)
(6) First film (hiding layer / pattern printing layer / base material layer) / adhesive layer / second film (printing information layer / second intermediate layer / adhesive layer / thermal adhesive resin layer)
(7) First film (base material layer / adhesive layer / first intermediate layer / hiding layer / pattern printing layer) / adhesive layer / second film (printing information layer / second intermediate layer / adhesive layer / heat) Adhesive resin layer)
(8) First film (hiding layer / design printing layer / base material layer / adhesive layer / first intermediate layer) / adhesive layer / second film (printing information layer / second intermediate layer / adhesive layer / heat) Adhesive resin layer)

  FIG. 3 is a perspective view showing an embodiment of a packaging bag produced using the laminate 1 provided with the print information layer shown in FIG. 1. The packaging bag 2 includes a back seal portion 3 and a top A pillow-type packaging bag sealed by lower end seal portions 4, 4. This packaging bag 2 is a concealment layer 12 directly from the outer surface side, and indirectly a picture printing layer 13 or contents. The print information I of the print information layer 22 cannot be confirmed by an object (not shown) or the like, and when the packaging bag 2 is opened, as shown in FIG. The print information I of the formed print information layer 22 is configured to be visible through the thermal adhesive resin layer 21 from the inner surface side. In addition, since the print information layer 22 is provided between the base material layer 11 and the heat-adhesive resin layer 21, it does not fall off during manufacture and sales, and has an effect of preventing falsification, In addition, it is not possible to confirm with fraudulent acts other than an authorized purchaser at the time of sale.

  The base material layer 11 is a layer on the outer surface side of the laminate 1 provided with a print information layer, and a synthetic resin film having excellent properties in mechanical, physical, chemical, etc. can be used. For example, a uniaxially or biaxially stretched film made of a resin such as polyester, polyamide, or polypropylene, or a metal oxide such as silicon oxide or aluminum oxide on at least one surface thereof, or polyvinylidene chloride, What provided the transparent water vapor | steam and oxygen gas barrier layers, such as polyvinyl alcohol, can be used. Moreover, the said synthetic resin film can also be used for a 1st intermediate | middle layer. In the case of surface printing specifications in which a concealing layer and a pattern printing layer are provided on the outer surface side of the base material layer 11, the synthetic resin film is colored, paper, nonwoven fabric, aluminum foil, aluminum stretched stretched film, etc. Can be used as the base material layer 11 and the first intermediate layer.

  The heat-adhesive resin layer 21 may be any layer formed from a heat-adhesive resin that can be melted by heat and welded to each other. For example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear ( (Linear) Low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ionomer resin, ethylene-acrylic acid copolymer In addition to olefinic resins such as ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, etc., resins made of one or more resins such as polyester, polyamide, polyacrylonitrile, etc. Or a multilayered material can be used. The second intermediate layer only needs to be transparent so that the printing information I can be visually recognized through the second film. For example, an unstretched or stretched film made of polyester, polyamide, polypropylene, or the like or these films can be used. A metal oxide such as silicon oxide or aluminum oxide, a transparent water vapor such as polyvinylidene chloride or polyvinyl alcohol, or an oxygen gas barrier layer or a polyvinyl alcohol film can be used on at least one surface. Moreover, the material which the black ink of an inkjet printer infiltrates, such as paper and a nonwoven fabric, can also be used. This is because, for materials such as paper and non-woven fabric, when black ink of an ink jet printer is printed, the black ink penetrates the material so that the print information I can be seen through the thermal adhesive resin layer 21 from the inner surface side. It is because it can do.

  In addition, as the pattern printing layer 13 and the concealing layer 12, an appropriate vehicle is selected depending on the type of stretched film used for the base layer 11 or the first intermediate layer, and a pigment, a solvent, various auxiliary agents, etc. are added to the ink. It can form by printing by well-known printing methods, such as a gravure printing method, using what was converted.

  Further, the print information layer 22 can be formed by printing using a dye type or pigment type ink for an ink jet printer using a known ink jet printer. In the embodiment, the print information I of the print information layer 22 exemplifies Arabic numerals, but may be alphabets, symbols, pictures, or the like, or a mixture of these.

FIG. 4 is a cross-sectional view corresponding to FIG. 2 showing a second embodiment of a laminate provided with a print information layer obtained by the manufacturing method according to the present invention. It is shown. As shown in FIG. 4, a laminate 1 ′ having a print information layer according to the second embodiment of the present invention includes a base material layer 11 ′ having a picture print layer 13 ′, a concealing intermediate layer 14, and an inkjet. An intermediate layer comprising a print information layer 22 formed by a printer and a second film 20 composed of a heat-adhesive resin layer 21 and having a concealing property with the surface of the pattern print layer 13 ′ formed on the base material layer 11 ′. 14 is laminated via the adhesive layer 30, and the surface of the print information layer 22 formed on the intermediate layer 14 and the heat-adhesive resin layer 21 is laminated via the adhesive layer 30. The print information layer 22 formed on the thermoadhesive resin layer 21 constituting the second film 20 is printed with an identification character string as print information I using black ink with an ink jet printer, and the print information layer 22 is formed. Yes. The pattern print layer 13 ′ formed on the base material layer 11 ′ and the print information layer 22 formed on the thermal adhesive resin layer 21 are laminated in synchronization. That is, since the print information layer 22 of the laminate 1 ′ having the print information layer is covered with the concealing intermediate layer 14, the print information I is confirmed from the base layer 11 ′ side which is the outer surface side. However, it is visible only from the heat-adhesive resin layer 21 side constituting the second film 20 on the inner surface side.

In 2nd embodiment, although the case where the 2nd film was only the heat bondable resin layer 21 was shown, the inner layer was made into the heat bondable resin layer 21, and 2nd intermediate | middle layers, such as a plastic film, were laminated | stacked on the intermediate | middle layer side. It is good also as a structure. Others are the same as in the first embodiment. Next, a specific configuration example of the second embodiment is shown.
(1) Base material layer / pattern printing layer / adhesive layer / intermediate layer / adhesive layer / second film (printing information layer / thermal adhesive resin layer)
(2) Picture printing layer / base material layer / adhesive layer / intermediate layer / adhesive layer / second film (printing information layer / thermal adhesive resin layer)
(3) Base material layer / adhesive layer / pattern printing layer / intermediate layer / adhesive layer / second film (printing information layer / thermal adhesive resin layer)
(4) Substrate layer / pattern printing layer / adhesive layer / intermediate layer / adhesive layer / second film (print information layer / second intermediate layer / adhesive layer / thermal adhesive resin layer)
(5) Picture printing layer / base material layer / adhesive layer / intermediate layer / adhesive layer / second film (print information layer / second intermediate layer / adhesive layer / thermal adhesive resin layer)
(6) Base material layer / adhesive layer / picture printing layer / intermediate layer / adhesive layer / second film (printing information layer / second intermediate layer / adhesive layer / thermal adhesive resin layer)

  In the second embodiment, the base material layer 11 ′ is a layer on the outer surface side of the laminate 1 ′ provided with the print information layer, and is made of a synthetic resin having excellent properties such as mechanical, physical, and chemical properties. A film can be used, for example, a uniaxially or biaxially stretched film made of a resin such as polyester, polyamide or polypropylene, or a metal oxide such as silicon oxide or aluminum oxide on at least one surface thereof Or what provided the transparent water vapor | steam and oxygen gas barrier layers, such as polyvinylidene chloride and polyvinyl alcohol, can be used. Further, when a pattern printing layer is provided on the outer surface side of the base material layer 11 ′, paper, nonwoven fabric, aluminum foil, the above-mentioned stretched film on which aluminum is vapor-deposited, or the like can be used.

  For the intermediate layer 14, a concealing material is used, a colored film containing a coloring agent in the synthetic resin film and colored, a film obtained by performing aluminum vapor deposition on the synthetic resin film, paper, nonwoven fabric, and aluminum foil Can be used.

  The materials shown in the first embodiment can be used for the heat-adhesive resin layer 21 and the second intermediate layer used in the second film. Otherwise, the same materials as in the first embodiment can be used.

  FIG. 5 is an explanatory view showing an embodiment of a method for producing a laminate 1 having a print information layer according to the present invention, and shows an outline of the main part of a dry laminator. The dry laminator is a first paper feeding device for rewinding and rewinding an original material to which an adhesive is applied by winding it in a coil shape, and a coating for applying an adhesive to the original material fed from the first paper supply. The device, the drying device for drying the diluted solution of the adhesive, the second paper feeding device for rewinding the coiled material wound up in a coil shape, the first paper feeding and the second paper feeding. 5 is composed of a laminating unit that heats and presses and bonds the original material, and a winding device that winds the original material in a coil shape. FIG. 41, the laminating part 42, and the winding device 43 are shown. Further, a photoelectric tube mark detector 44 for detecting a photoelectric tube mark (not shown) synchronized with the concealment layer 12 formed on the first film 10 is installed between the drying device 40 and the laminating unit 42, An ink jet printer 45 that forms the print information I of the print information layer 22 on the second film 20 is installed between the laminate portions 42.

  First, the winding of the first film 10 printed in the previous process and formed by forming the concealing layer 12 and the pattern printing layer 13 on the base material layer 11 is attached to a first paper feeder (not shown). A coating device (not shown) is provided on the surface 10a (the surface on which the concealing layer 12, the pattern printing layer 13, and the adhesive layer 30 are formed) laminated on the second film 20 of the first film 10 fed out from the first paper feeder. The adhesive diluted in (1) is applied, and the diluted solution is dried by the drying device 40 to form the adhesive layer 30, and then guided to the laminating unit 42. On the other hand, the winding of the second film 20 attached to the second paper feeding device 41 is unwound, and the printing information is printed with, for example, black ink on the surface 20a of the second film 20 laminated on the first film 10 by the ink jet printer 45. Is printed and the print information layer 22 is formed, and then guided to the laminating section 42 so that the surface of the adhesive layer 30 formed on the first film 10 and the surface of the print information layer 22 formed on the second film 20 face each other. Then, the laminate 1 is laminated by pressing with a nip roll (heated metal roll) 42a and a nip roll (rubber roll) 42b, and then taken up by the take-up device 43 and taken up by the laminate 1 having the print information layer. .

  Here, a method for synchronizing the concealment layer 12 formed on the first film 10 and the print information layer 22 formed on the second film 20 will be described. The concealing layer 12 formed on the base material layer 11 of the first film 10 that travels from the drying device 40 toward the laminating portion 42 and the surface opposite to the surface on which the photoelectric tube marks tuned to the concealing layer 12 are formed (laminated material). The photoelectric tube mark is detected by the photoelectric tube mark detector 44 through the base material layer 11 from the outer surface side), and the detected signal is fed back to the ink jet printer 45 to the first film 10 of the second film 20. After the surface 20a to be laminated is printed by the ink jet printer 45 and the print information layer 22 is formed, the position of the concealing layer 12 formed on the first film 10 and the second film 20 are formed by the laminating unit 42. The first film 10 and the second film 20 are fed into the laminating section 42 so that the position of the print information layer 22 is in a synchronized positional relationship. Prowl 42a, overlaid a first film adhesive layer 30 side formed 10 and the print information layer 22 side formed in the second film 20 are opposed at 42b, is laminated by crimping. It should be noted that the path P1 of the first film 10 from the position of the photoelectric tube mark detector 44 to the position where the nip rolls 42a and 42b are pressed and the position of the second film 20 from the inkjet printer 45 to the position where the nip rolls 42a and 42b are pressed. The concealment layer 12 and the print information layer 22 can be synchronized by installing the photoelectric tube mark detector 44 and the ink jet printer 45 at a position where the relationship with the path P2 is an integer multiple of P1. In addition, an automatic alignment control device that, for example, a movable roll is provided between the ink jet printer 45 and the laminating unit 42 so that the path P2 is variable and the alignment between the concealing layer 12 and the print information layer 22 can be easily corrected. May be provided. Thereafter, the laminated body 1 having the laminated print information layers is wound up by the winding device 43.

  Thereafter, winding of the laminate 1 including the print information layer is completed by aging (aging) under predetermined conditions (temperature, time), and the adhesive of the adhesive layer 30 is cured. As the adhesive, a two-component type comprising a main component such as polyester polyol-isocyanate, polyether polyol-isocyanate, polyurethane-isocyanate and a curing agent is preferably used.

  In the case of the laminated body 1 ′ provided with the print information layer, the pattern print layer 13 ′ and the photoelectric tube mark synchronized with the pattern print layer 13 ′ are formed by printing on the base layer 11 ′ or the intermediate layer 14 in the previous step. Then, after winding the base material layer 11 ′ and the intermediate layer 14, or after laminating the base material layer 11 ′ and the intermediate layer 14, the pattern printing layer 13 ′ is applied to the surface of the base material layer 11 ′ or the intermediate layer 14. A winding having a phototube mark in synchronism with the pattern printing layer is attached to the first paper feeder, and an adhesive is applied to the surface of the intermediate layer 14. Others are manufactured by the same method as the laminated body 1 provided with the printing information layer.

  FIG. 6 is an explanatory view showing another embodiment of a method for producing a laminate 1 having a print information layer according to the present invention, and shows an outline of the main part of an extrusion laminator. The extrusion laminator is a first sheet feeding device for rewinding the original film to which the anchor agent is applied by winding a coiled coil, and AC for applying the anchor agent to the original sheet fed from the first sheet feeding. From a coating device, a drying device that dries the diluted solution of the anchor agent, a second paper feeding device that winds up the raw material to be bonded in a coil shape, and rewinds it, from the first paper feeding and the second paper feeding Laminate part that feeds unrolled raw material through adhesive layer made of thermoplastic resin, pellet-shaped thermoplastic resin supplied to hopper part is heated and melted and fed into T die with extrusion screw, curtain from T die FIG. 6 shows a T-die 50, a second paper feeding device 51, and a laminating machine for the extrusion device. It shows the isolation portion 52. As shown in FIG. 6, a photoelectric tube mark detector 54 for detecting a photoelectric tube mark is installed near the drying device (not shown) side of the laminating unit 52, and the second film 20 is interposed between the second paper feeding device 51 and the laminating unit 52. An ink jet printer 55 for forming the print information I of the print information layer 22 is installed.

  First, the winding of the first film 10 printed in the previous process and formed by forming the concealing layer 12 and the pattern printing layer 13 on the base material layer 11 is attached to a first paper feeder (not shown). An anchor agent diluted with an AC coating device (not shown) is applied to the surface of the concealing layer 12 and the pattern printing layer 13 formed on the base material layer 11 constituting the first film 10 fed from the first paper feeder. Then, the diluted solution is dried by a drying device (not shown) and guided to the laminating unit 52. On the other hand, the winding of the second film 20 attached to the second paper feeding device 51 is fed out, and the printing information is printed with, for example, black ink on the surface 20a of the second film 20 laminated on the first film 10 by the inkjet printer 55, for example. Is printed and the print information layer 22 is formed, and then guided to the laminating section 52, and the surface 10a (the concealment layer 12 and the pattern print layer 13 formed on the second film 20 of the first film 10 is formed and the anchor agent is applied. Nip roll 52a and chill roll 52b through an adhesive layer 30 formed by melting and extruding a thermoplastic resin from a T-die 50 between the printed information layer 22 face formed on the second film 20 and After being pressure-bonded and sandwich-laminated and cooled, the laminate 1 is wound by a winding device (not shown) and is taken up by the laminate 1 having the print information layer.

  About the method of synchronizing the concealment layer 12 formed in the 1st film 10, and the printing information layer 22 formed in the 2nd film 20, it carries out similarly to one Embodiment. A concealing layer 12 formed on the first film 10 that travels from the drying device toward the laminating section 52 and a surface opposite to the surface on which the photoelectric tube mark (not shown) synchronized with the concealing layer 12 is formed (a laminated material). The photoelectric tube mark is detected by the photoelectric tube mark detector 54 through the base material layer 11 from the outer surface side), and the detected signal is fed back to the ink jet printer 55 and laminated on the first film 10 of the second film 20. After the print information layer 22 is formed by printing on the surface 20a by the ink jet printer 55, the position of the concealment layer 12 formed on the first film 10 and the print information formed on the second film 20 are formed by the laminate unit 52. The first film 10 and the second film 20 are fed into the laminating section 52 so that the positions of the layers 22 are in a synchronized positional relationship. By pressure bonding and cooling via the adhesive layer 30 between the anchor agent application surface formed on the first film 10 and the surface of the print information layer 22 formed on the second film 20 by the roller 52a and the chill roll 52b. Laminated. Others are the same as in the embodiment, and a description thereof will be omitted.

  Moreover, general-purpose anchor agents, such as a polyethyleneimine type, an organic titanate type, an isocyanate type, a urethane type, a polybutadiene type, are used for the said manufacturing method. As the thermoplastic resin, an extrudable olefin resin such as polyethylene and polypropylene can be used. In addition, although an anchor agent does not need to be used, since the adhesive force of the 1st film 10 and the adhesive bond layer 30 improves, it is better to use it.

  In the case of the laminated body 1 ′ provided with the print information layer, the pattern print layer 13 ′ and the photoelectric tube mark synchronized with the pattern print layer 13 ′ are formed by printing on the base layer 11 ′ or the intermediate layer 14 in the previous step. Then, after winding the base material layer 11 ′ and the intermediate layer 14, or after laminating the base material layer 11 ′ and the intermediate layer 14, the pattern printing layer 13 ′ is applied to the surface of the base material layer 11 ′ or the intermediate layer 14. And a winding having a phototube mark synchronized with the pattern print layer 13 ′ is attached to the first paper feeder, and an anchor agent is applied to the surface of the intermediate layer. Others are the same as the manufacturing method of the laminated body 1 provided with the printing information layer.

  Next, the present invention will be described in more detail with reference to the following examples.

A biaxially stretched polypropylene (OPP) with a single-sided corona treatment having a thickness of 20 μm is used as a base material layer to gravure the pattern on the corona-treated surface to form a pattern printing layer and a phototube mark, and the intermediate layer has a thickness of 6.5 μm. Was laminated by a dry lamination method (DL) using a polyester polyol-isocyanate adhesive to prepare an intermediate laminate of OPP 20 μm / pattern printing layer / DL / ALM 6.5 μm. On the other hand, one side of fine paper (P) 52.3 g / m ² is corona-treated, and a low-density polyethylene (PE) is thermally melted by extrusion lamination on the corona-treated surface to form a 20 μm-thick thermoadhesive resin layer. Formed to produce a second film. Next, using a dry laminator equipped with an ink jet printer and photoelectric tube mark detector, apply an adhesive to the ALM surface of the intermediate laminate, form an adhesive layer, and then apply the pattern print layer to the high-quality paper surface of the second film. Print information is printed with black ink by an inkjet printer in synchronization with each other to form a print information layer, and the print information layer and the adhesive layer are overlapped and pressure-bonded, whereby OPP 20 μm / pattern print layer / DL / ALM 6.5 μm / A laminate 1 ′ having a print information layer having a configuration of adhesive layer / print information layer / P52.3 g / m ² / PE 25 μm was produced.

  A biaxially stretched polypropylene (OPP) with a single-sided corona treatment having a thickness of 20 μm is used as a base material layer to gravure the pattern on the corona-treated surface to form a pattern printing layer and a phototube mark, and the intermediate layer has a thickness of 6.5 μm. Was laminated by a dry lamination method (DL) using a polyester polyol-isocyanate adhesive to prepare an intermediate laminate of OPP 20 μm / pattern printing layer / DL / ALM 6.5 μm. On the other hand, the second film was only a heat-adhesive resin layer, and a low-density polyethylene film (PEF) having a thickness of 40 μm was prepared. Next, using an extrusion laminator equipped with an inkjet printer and photoelectric tube mark detector, apply an anchor agent to the ALM surface of the intermediate laminate, and then synchronize the pattern printing layer on the surface laminated on the ALM surface of PEF. Print information is printed with black ink by an ink jet printer to form a print information layer, and an extrusion lamination method using low-density polyethylene (PE) as a heat-adhesive resin between the print information layer and the ALM anchoring agent coating surface PE is melted by heat to form a 20 μm adhesive layer, and laminated through the adhesive layer, OPP 20 μm / pattern printing layer / DL / ALM 6.5 μm / anchor agent / PE 20 μm / printing information layer / PEF 40 μm A laminate 1 ′ having a print information layer having the structure as described above was produced.

A biaxially stretched polyethylene terephthalate film (VPET) with an aluminum oxide vapor deposition film formed on one side with a thickness of 12 μm is used as the base layer of the first film. A concealing layer to be a region and a photoelectric tube mark were formed by printing, and a pattern printing layer was formed thereon by printing. The concealing layer was formed by printing with a gravure plate having a plate depth of 30 μm corresponding to the concealment region partially provided at a predetermined position, using silver ink in which an aluminum paste was dispersed so as to obtain concealability. On the other hand, a low-density polyethylene film (PEF) having a thickness of 40 μm was prepared as the second film.
Next, using a dry laminator equipped with an inkjet printer and a photoelectric tube mark detector, an adhesive is applied to the pattern print layer surface of the first film to form an adhesive layer, which is then laminated to the first film of the second film. The print information is printed with black ink by an ink jet printer in synchronization with the masking layer on the surface to form a print information layer, and the print information layer and the adhesive layer are stacked and pressure-bonded to obtain VPET 12 μm / masking layer / picture A laminate 1 having a print information layer having a configuration of print layer / adhesive layer / print information layer / PEF 40 μm was produced.

The second film of Example 3 was replaced with the second film prepared in Example 1, and the rest was the same as in Example 3, except that VPET 12 μm / hiding layer / picture printing layer / adhesive layer / printing information layer / P52. A laminate 1 having a print information layer having a configuration of 3 g / m ² / PE 25 μm was produced.

  In any of the laminates 1 and 1 ′ having the print information layer obtained in Examples 1 to 4, the print information is concealed by the concealment layer or the intermediate layer (ALM) from the outer surface side (OPP or VPET side). It could not be confirmed and was visible from the inner surface side (PE or PEF side).

It is the top view seen from the inner surface side which shows 1st embodiment of the laminated body provided with the printing information layer obtained by the manufacturing method which concerns on this invention. FIG. 1 is a sectional view taken along line XX in FIG. It is a perspective view which shows one Example of the packaging bag produced using the laminated body shown in FIG. It is sectional drawing equivalent to FIG. 2 which shows 2nd embodiment of the laminated body provided with the printing information layer obtained by the manufacturing method which concerns on this invention. It is explanatory drawing which shows the principal part outline of one Embodiment of the manufacturing method of the laminated body provided with the printing information layer which concerns on this invention. It is explanatory drawing which shows the principal part outline of other embodiment of the manufacturing method of the laminated body provided with the printing information layer which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1 'Laminated body provided with printing information layer 2 Packaging bag 3 Back seal part 4 Upper / lower end seal part 10 1st film 10a Surface 11 and 11' base material layer 12 laminated | stacked on the 2nd film of a 1st film Hiding layer 13, 13 'Picture printing layer 14 Intermediate layer 20 Second film 20a Surface of second film laminated on first film 21 Thermal adhesive resin layer 22 Print information layer 30 Adhesive layer 40 Drying device 41 Second supply Paper device 42 Laminating part 42a, 42b Nip roll 43 Winding device 44, 54 Photoelectric tube mark detector 45, 55 Inkjet printer 50 T die 51 Second paper feeding device 52 Laminating part 52a Nip roll 52b Chill roll 55 Second paper feeding device I Printing information A Concealment area

Claims (5)

A first film having a pattern printing layer and a concealing layer, a printing information layer formed by an ink jet printer, and a second film having a thermal adhesive resin layer on the inner layer are laminated via an adhesive layer, and the printing information It is a manufacturing method of a layered product provided with a printing information layer in which printing information of a layer is visible only from the second film side,
Using a laminator equipped with an ink jet printer, print information is printed on the surface of the second film laminated on the first film in synchronism with the concealment layer of the first film using an ink jet printer. And forming an adhesive layer on the surface of the first film laminated on the second film, drying the adhesive layer, and then forming the adhesive layer on the first film. The adhesive layer surface formed on the first film and the print information layer surface formed on the second film are overlapped with each other so as to cover the print information layer formed on the two films, and pressure-bonded. A method for producing a laminate including a print information layer, wherein the laminate is laminated . A base material layer having a pattern printing layer, a concealing intermediate layer, a printing information layer formed by an ink jet printer, and a second film having a heat-adhesive resin layer as an inner layer are laminated via an adhesive layer. The printed information layer is a method for producing a laminate including a printed information layer in which printed information is visible only from the second film side,
After laminating the base material layer and the intermediate layer, using a laminator equipped with an ink jet printer, the surface of the second film to be laminated on the intermediate layer is coated on the pattern layer of the base material layer with an ink jet printer. The print information is printed in synchronization with each other to form a print information layer, and an adhesive is applied to the surface of the intermediate layer laminated on the second film and dried to form an adhesive layer. A method for producing a laminate having a print information layer, wherein the adhesive layer surface formed on the second film and the print information layer surface formed on the second film are stacked so as to face each other and press bonded together . A first film having a pattern printing layer and a concealing layer, a printing information layer formed by an ink jet printer, and a second film having a thermal adhesive resin layer on the inner layer are laminated via an adhesive layer, and the printing information It is a manufacturing method of a layered product provided with a printing information layer in which printing information of a layer is visible only from the second film side ,
Using an extrusion laminator equipped with an ink jet printer, print information is printed on the surface of the second film laminated on the first film in synchronism with the concealing layer of the first film using an ink jet printer. to form the said the first surface of the concealing layer formed on the film is laminated to the second film of the first film so as to cover the print information layer formed on the second film No. A method for producing a laminate having a printing information layer, wherein a thermoplastic resin is laminated between the printing information layer surface formed on the two films via an adhesive layer formed by melt extrusion . A base material layer having a pattern printing layer, a concealing intermediate layer, a printing information layer formed by an ink jet printer, and a second film having a heat-adhesive resin layer as an inner layer are laminated via an adhesive layer. The printed information layer is a method for producing a laminate including a printed information layer in which printed information is visible only from the second film side ,
After laminating the base material layer and the intermediate layer, using the extrusion laminator equipped with the ink jet printer, the pattern layer of the base material layer with the ink jet printer on the surface laminated on the intermediate layer of the second film In addition to forming a print information layer by printing print information in synchronization with the adhesive layer formed by melt extrusion of a thermoplastic resin between the intermediate layer surface and the print information layer surface formed on the second film. A method for producing a laminate comprising a print information layer, wherein the laminate is laminated. The method for producing a laminate having a print information layer according to any one of claims 1 to 4, wherein the second film is composed of a heat-adhesive resin layer .

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