JP2019064143A - Laminated body and card manufactured using the same - Google Patents

Abstract

To provide a laminated body which can be used for manufacturing a card with various specifications.SOLUTION: A laminated body 10 comprises a front peeling base material, a front adhesive layer 11, a card core layer 13 storing an inlet 12 therein, a back adhesive layer 14, and a back peeling base material in this order, and when the front peeling base material and the back peeling base material are peeled, the front adhesive layer and the back adhesive layer remain on the side of the card core layer.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a laminate and a card produced using the same.

  An AD card such as an identification card or an IC card such as a bank has a face picture of a person and character information such as the address and name of the person written on the surface of the card so that individual recognition can be made. Personal information is recorded in the memory of the electronic component. Therefore, even if falsification is added to the photograph or text information printed on the card surface, it is understood that the falsification of the card has been made by comparing it with the personal information recorded in the memory inside the card. It has become.

  Such a card can usually be produced by bonding an inlet between an outer substrate and a back substrate using an adhesive (Patent Document 1).

  In the card disclosed in Patent Document 1, it is necessary to determine the materials of the front and back substrates at the time of its manufacture, and after production, the specifications of the card, such as changing the material of the substrate, are determined. Could not change.

JP 2000-298714 A

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a laminate that can be used for producing cards of various specifications.

  The laminate of the present invention is characterized by including a front adhesive layer, a card core layer containing an inlet, and a rear adhesive layer in this order.

  In one embodiment, the laminate of the present invention comprises a front peeling substrate, a front adhesive layer, a card core layer containing an inlet, a back adhesive layer, and a rear peeling substrate in this order. When the release substrate and the back release substrate are peeled off, the front adhesive layer and the back adhesive layer remain on the card core layer side.

  In one embodiment, the laminate of the present invention comprises a release layer between at least one of a front release substrate and a front adhesive layer, and between a back release substrate and a rear adhesive layer. Further comprising

  In one embodiment, the thickness of the front adhesive layer and the back adhesive layer provided in the laminate of the present invention is 1 μm or more and 10 μm or less.

  In one embodiment, at least one of the front adhesive layer and the back adhesive layer comprises a vinyl chloride-vinyl acetate copolymer.

  The card of the present invention is produced by the above laminate, and is characterized by including a front substrate, a front adhesive layer, a card core layer, a back adhesive layer, and a back substrate in this order. .

  In one embodiment, the card of the present invention further comprises a pre-printed layer between the front substrate and the front adhesive layer and / or between the back substrate and the back adhesive layer. .

  In one embodiment, the card of the present invention is characterized by including a front transfer layer, a front adhesive layer, a card core layer, a back adhesive layer, and a back transfer layer in this order.

  In one embodiment, at least one of the front transfer layer and the back transfer layer provided in the card of the present invention comprises a protective layer.

  In one embodiment, at least one of the front transfer layer and the back transfer layer provided in the card of the present invention comprises a release layer, a protective layer, and an adhesive layer in this order.

  ADVANTAGE OF THE INVENTION According to this invention, the laminated body which can be used for preparation of the card of various specifications can be provided.

FIG. 1 is a schematic cross-sectional view showing an embodiment of the laminate of the present invention. FIG. 2: is a schematic cross section which shows one Embodiment of the laminated body of this invention. FIG. 3 is a schematic cross-sectional view showing an embodiment of the card of the present invention. FIG. 4 is a schematic cross-sectional view showing an embodiment of the card of the present invention. FIG. 5 is a schematic cross-sectional view showing an embodiment of the card of the present invention.

(Laminate)
Hereinafter, an embodiment of a laminate of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the laminate 10 of the present invention comprises a front adhesive layer 11, a card core layer 13 in which the inlet 12 is accommodated, and a rear adhesive layer 14 in this order.
In another embodiment, as shown in FIG. 2, the laminate 10 according to the present invention has a front peeling substrate 15, a front adhesive layer 11, and a card core layer 13 in which the inlet 12 is accommodated, and a back adhesive. The layer 14 and the backing release substrate 16 are provided in this order. In addition, the laminate of the present invention may be provided with a release layer between at least one of the front and rear adhesive layers and between the front and rear adhesive layers and between the rear and rear adhesive layers. Good (not shown).
The front adhesive layer 11 and the rear adhesive layer 14 are hereinafter sometimes collectively referred to as an adhesive layer, and the front peeling substrate 15 and the rear peeling substrate 16 are hereinafter collectively referred to as a peeling substrate.

(Front adhesive layer and back adhesive layer)
The adhesive layer can contain a resin that melts or softens by heat and develops adhesiveness, and examples thereof include polyvinyl acetate, polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer, and vinyl chloride-vinyl acetate copolymer. Vinyl resins such as coalescing, polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyamide resins, polyimide resins, polyacrylates And (meth) acrylic resins such as polymethacrylate and polymethylmethacrylate, cellulose resins such as cellulose diastase, polyurethane resins and the like.
Among the above-mentioned resins, a vinyl chloride-vinyl acetate copolymer improves the adhesion between the card core layer and the substrate or transfer layer when the laminate of the present invention is used for the preparation of a card described later. It is preferable because it can be More specifically, when it is intended to deform the card by peeling off the base material and the transfer layer provided in the card, the card core layer is also peeled together with the base material etc., and in some cases, the inlet accommodated in the card core layer It is preferable because it is destroyed and it is difficult to forge.
Among the above-mentioned resins, by using polyvinyl acetate, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, PVB, cellulose diastase, etc., the adhesive layer can be provided with a function as a receiving layer, An image can be formed by a sublimation dye, a heat melting ink, or the like.
The image formation on the adhesive layer may be performed only on one side or both sides.

  The content of the resin in the adhesive layer is preferably 30% by mass or more and 90% by mass or less, and more preferably 40% by mass or more and 80% by mass or less. Thereby, the adhesion of the adhesive layer to the card core layer can be further improved.

  The adhesive layer can contain a release agent such as silicone oil, phosphate ester plasticizer, fluorine compound, wax, metal soap, and filler. Thereby, when the layered product of the present invention is provided with the surface exfoliation base material and the back exfoliation base material, the adhesiveness to these exfoliation base materials can be adjusted.

  The content of the release agent in the adhesive layer is preferably 0.1% by mass or more and 10% by mass or less, and more preferably 0.5% by mass or more and 5% by mass or less. Thereby, the adhesiveness with respect to a peeling base material can be made more preferable.

  In addition, the adhesive layer is a plasticizer, a filler, an ultraviolet light stabilizer, a coloring preventing material, a fluorescent whitening material, a matting material, a deodorant material, a flame retardant material, a weather resistant material, as long as the characteristics of the present invention are not impaired. An additive such as an antistatic material, a yarn friction reducing material, a slip material, an antioxidant, an ion exchange material, a dispersing material, an ultraviolet absorbing material, and a coloring material such as a pigment or a dye can be included.

  The thickness of the adhesive layer is preferably 1 μm or more and 10 μm or less, and more preferably 2 μm or more and 7 μm or less. By setting the thickness of the adhesive layer within the above-mentioned numerical range, the image formation suitability, the transferability of the transfer layer, and the releasability of the release substrate are improved.

  When the laminate of the present invention comprises a release substrate, the adhesive layer remains on the card core layer side when these are peeled off.

  In addition, the material which comprises a surface adhesive layer and a back adhesive layer, and its thickness may be the same, and may differ.

(Card core layer)
The card core layer is a layer having a function of accommodating and protecting the inlet.
In one embodiment, the card core layer includes a hot melt adhesive, for example, a thermosetting hot melt adhesive, a two-component curable hot melt adhesive, an ultraviolet curable hot melt adhesive, a moisture curable hot melt adhesive Materials etc. Among these, a moisture-curable hot-melt adhesive is preferable because of the adhesiveness to the adhesive layer and the smoothness when the release substrate is released.

  In one embodiment, as shown in FIGS. 1 and 2, the inlet 12 accommodated in the card core layer 13 includes a film-like inlet substrate 17, an IC chip 18 disposed on the inlet substrate 17, and an IC. It has a configuration including an antenna 19 electrically connected to the chip 18 and a reinforcing plate 20 for protecting the IC chip 18.

The inlet substrate is made of, for example, a non-woven fabric or a film made of resin such as PET, polyethylene naphthalate (PEN), polyvinyl chloride, vinyl chloride-vinyl acetate copolymer (hereinafter simply referred to as resin film), and an antenna Is made of a conductor such as metal (eg, Al, Cu, Ag), and the reinforcing plate may be made of a metal such as stainless steel.
From the viewpoint of preventing falsification when the laminate of the present invention is used for producing a card, the inlet substrate is preferably made of a non-woven fabric.

  The IC chip 18 includes a memory unit (not shown) for recording information, an operation of recording information in the memory unit, an operation of reading information from the memory unit, and a control unit for controlling a wireless communication operation. (Not shown). The IC chip 18 reads out information to an interrogator (not shown) such as a reader / writer (not shown) via the antenna 19 or records information input from the interrogator via the antenna 19. ing.

  The thickness of the card core layer is preferably 50 μm or more and 500 μm or less, and more preferably 100 μm or more and 400 μm or less. By setting the thickness of the card core layer in the above numerical range, the inlet can be completely accommodated in the card core layer, and unevenness due to the inlet is generated on the surface of the laminate or the card produced using this. Can be prevented.

(Front and back peeling substrates)
In one embodiment, the laminate of the present invention comprises a front release substrate and a back release substrate.
Peeling substrates include polyester resins such as PET, PBT, PEN, 1,4-polycyclohexylene dimethylene terephthalate, terephthalic acid-cyclohexane dimethanol-ethylene glycol copolymer, nylon 6 and nylon 6, 6 etc. Polyamide resins, polyolefin resins such as PE, PP and polymethylpentene, polyvinyl chloride, polyvinyl alcohol (PVA), (meth) acrylic resins, polyimide resins such as polyimide and polyetherimide, cellophane, cellulose acetate, Cellulose resins such as nitrocellulose, cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB), polystyrene resins such as polystyrene, polycarbonate resins, ionomer resins, etc. The formed resin film can be used.

In one embodiment, the air permeability of the release substrate is preferably 1000 seconds or less. Thereby, the air permeability can be sufficiently secured, and when a moisture-curable hot melt adhesive is used for producing a card core layer, the curing can be favorably performed, which is preferable.
In addition, air permeability can be measured based on JIS-P-8117.

  The thickness of the release substrate is not particularly limited, and can be 50 μm or more and 250 μm or less.

  In addition, the material which comprises a surface exfoliation base material and a back exfoliation base material, and its thickness may be the same, and may differ.

(Release layer)
In one embodiment, the laminate of the present invention comprises a release layer between at least one of the front release substrate and the front adhesive layer, and between the back release substrate and the rear adhesive layer. By providing the release layer of the laminate of the present invention, the adhesion between the release substrate and the adhesive layer can be adjusted. In addition, when a release layer peels a peeling base material, it remains in the peeling base material side.

  In one embodiment, the release layer is a silicone resin such as (meth) acrylic resin, urethane resin, acetal resin, polyamide resin, polyester resin, melamine resin, polyol resin, cellulose resin, etc. Binder resin is included.

  In one embodiment, the release layer contains a release agent such as silicone oil, phosphate ester plasticizer, fluorine compound, wax, metal soap, and filler.

  The thickness of the release layer is not particularly limited, but can be, for example, 0.1 μm or more and 5 μm or less.

(Method of manufacturing laminate)
The method for producing a laminate of the present invention is
Preparing a front surface peeling substrate and a back surface peeling substrate;
A step of applying a coating solution for forming a surface adhesive layer on one surface of the surface peeling substrate, and drying to form a surface adhesive layer;
Applying a coating solution for forming a back adhesive layer on one surface of the back peeling substrate, and drying to form a back adhesive layer;
Applying a hot melt adhesive on the front adhesive layer and the back adhesive layer;
Placing the inlet on the front or back adhesive layer;
A step of laminating the front adhesive layer and the rear adhesive layer facing each other by heating and pressing;
It is characterized by including.

  In one embodiment, the method for producing a laminate of the present invention includes the step of forming an image on at least one of the front adhesive layer and the back adhesive layer.

  In one embodiment, the method for producing a laminate of the present invention includes the step of forming a release layer.

  Moreover, in one embodiment, the manufacturing method of the layered product of the present invention includes the process of exfoliating the front exfoliation base material and the back exfoliation base material.

(Step of preparing front and back release substrates and back release substrates)
A peeling base material can be produced by melt-molding the above-mentioned resin using conventionally well-known methods, such as T-die method and an inflation method. Moreover, you may use what is marketed.

(Formation process of front adhesion layer and back adhesion layer)
The adhesive layer is obtained by dispersing or dissolving the above-mentioned material in water or a suitable solvent to form a coating solution for forming an adhesive layer, which is a roll coating method, reverse roll coating method, gravure coating method, reverse gravure coating method, bar It can form by apply | coating on a peeling base material, forming a coating film, and drying this by well-known means, such as a coating method and a rod-coating method.

(Application process of hot melt adhesive)
The application of the hot melt adhesive onto the adhesive layer can be carried out by known means such as a roll coater, reverse roll coater, gravure coater, reverse gravure coater, bar coater and rod coater.

(Step of arranging the inlet)
The method for producing a laminate of the present invention includes the step of disposing an inlet on the front adhesive layer or the back adhesive layer to which the hot melt adhesive has been applied.

(Lamination process)
In the method for producing a laminate according to the present invention, after arranging the inlet, the front adhesive layer and the rear adhesive layer are opposed to each other and heated and pressed to laminate them, and the front peeling substrate, the front adhesive layer, the card core The process of obtaining the laminated body which consists of a layer, a back adhesion layer, and a back release base material is included.
The heating temperature in the step is preferably 50 ° C. or more and 130 ° C. or less, and more preferably 60 ° C. or more and 100 ° C. or less. By making heating temperature into the said numerical range, while being able to improve the adhesiveness of these layers, generation | occurrence | production of the unevenness | corrugation resulting from the inlet accommodated in the card core layer can be prevented.

(Image formation process on adhesive layer)
In one embodiment, the method for producing a laminate of the present invention comprises an image forming step on an adhesive layer. This process can be performed between arbitrary processes if it is before the said lamination process, and can form an image in the surface in which the card core layer of the adhesion layer was provided by this process. Further, the image formation on the adhesive layer can be performed by a printing method such as thermal transfer printing, gravure printing, offset printing, intaglio printing, screen printing or the like of a fusion type thermal transfer system or a sublimation type thermal transfer system. The image to be formed is not particularly limited, such as a pattern, a pattern, a common character string or a frame.

(Step of forming release layer)
The formation of the release layer is performed before the laminating step, and the material is dispersed or dissolved in water or a suitable solvent, and a roll coater, reverse roll coater, gravure coater, reverse gravure coater, bar coater, rod coater, etc. It forms by apply | coating on a peeling base material, forming a coating film, and making it dry by a well-known means of this.

(Peeling process of front and back peeling substrates)
In one embodiment, the method for producing a laminate of the present invention includes the step of peeling a release substrate. Moreover, after peeling a peeling base material, you may form an image by the above-mentioned conventionally well-known method to the contact bonding layer with which a laminated body is equipped. Thereby, an image can be formed on the surface of the adhesive layer opposite to the surface on which the card core layer is provided.

(card)
The laminate of the present invention can be used for producing a card such as an IC card or an AD card.
In one embodiment, as shown in FIG. 3, the card 21 of the present invention comprises the laminate 10 of the present invention, and the front adhesive layer 11 and the rear adhesive layer 14 provided on the laminate 10, the front substrate 22 and A back substrate 23 is provided.
In the card 21 of the present invention, a pre-printed layer 24 is formed between at least one of the front substrate 22 and the front adhesive layer 11 and / or between the back substrate 23 and the back adhesive layer 14. (See FIG. 4).
In addition, the front base material 22 and the back base material 23 are hereinafter collectively referred to as a base material as the case may be.

In another embodiment, as shown in FIG. 5, the card 21 of the present invention has a front surface transferred onto the laminate 10 of the present invention, and the front adhesive layer 11 and the rear adhesive layer 12 of the laminate 10. A layer 25 and a back transfer layer 26 are provided.
In one embodiment, the front transfer layer 25 and the back transfer layer 26 may include at least the protective layer 27 and the release layer 28. In one embodiment, the front transfer layer 25 and the back transfer layer 26 may include an information recording layer (not shown).
Hereinafter, the front transfer layer 25 and the back transfer layer 26 will be collectively referred to as a transfer layer as the case may be.

(Front substrate and back substrate)
As a substrate constituting the card, paper materials such as coated paper, printing paper, high quality paper and kraft paper, and vinyl materials such as polyvinyl acetate, ethylene-vinyl acetate copolymer and vinyl chloride-vinyl acetate copolymer Resins, polyolefin resins such as PE and PP, polyester resins such as PET, PET-G and PBT, polyamide resins, polyimide resins, (meth) acrylic resins, cellulose resins such as cellulose diastase, polystyrene, etc. A film formed of a styrene resin, an ionomer resin or the like can be used.
Moreover, the laminated body of the above-mentioned material can be used as a base material. For example, a laminate of a high-quality paper and a laminate film formed of a polyolefin resin can be used.

The thickness of the substrate is preferably 50 μm or more and 500 μm or less, and more preferably 100 μm or more and 450 μm or less. By setting the thickness of the substrate within the above numerical range, the layer on the substrate can be well supported.
Further, the size (longitudinal and lateral lengths) of the substrate is not particularly limited, and may have the same size as that of the laminate, or may have a size larger than that of the laminate.
In addition, when using the laminated body of the above-mentioned material as a base material, the thickness and the size of the material which comprise each layer may be the same, or may differ.

  In addition, the material which comprises front and back base materials, the magnitude | size, and thickness may be the same, and may differ.

(Pre-printed layer)
The pre-printed layer is a layer on which an image is formed on at least one surface of a paper material or a resin film.
From the viewpoint of acceptability of a sublimation dye or a heat-meltable ink, the preprinted layer is made of polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer It is preferable that it is a resin film comprised from resin, such as cellulose resin, such as vinyl resins, such as cellulose acetate, cellulose acetate, polyester resin, polycarbonate resin, and polyolefin resin.

  The image may be formed by a conventionally known printing method such as thermal transfer printing, gravure printing, offset printing, intaglio printing, screen printing and the like.

  The thickness of the pre-printed layer is not particularly limited, and can be, for example, 0.5 μm or more and 10 μm or less.

(Front transfer layer and back transfer layer)
In one embodiment, the transfer layer provided in the card of the present invention comprises a protective layer as described above.
In one embodiment, the transfer layer provided in the card of the present invention comprises a release layer on the protective layer.
In one embodiment, the transfer layer comprises an information recording layer.
In one embodiment, the information recording layer is provided below the protective layer.

(Protective layer)
The protective layer is a layer provided to improve the durability of the card. In addition, when an image is formed on the adhesive layer included in the laminate, this image can be protected.

  The protective layer should contain resin materials such as polyolefin resin, vinyl resin, (meth) acrylic resin, cellulose resin, polyester resin, polyamide resin, polycarbonate resin, polystyrene resin, polyurethane resin, etc. it can.

  The content of the resin material in the protective layer is preferably 30% by mass or more and 90% by mass or less, and more preferably 40% by mass or more and 80% by mass or less. By making content of the said resin material in a protective layer into the said numerical range, the durability can be improved more.

  Also, the protective layer can include a mold release material. Examples of the release agent include phosphoric acid ester, olefin / maleic acid copolymer, amino polyether modified silicone oil, epoxy modified silicone oil, carboxyl modified silicone oil, polyethylene wax, amide wax and the like.

  The content of the release agent in the protective layer is preferably 0.1% by mass or more and 13% by mass or less, and more preferably 0.5% by mass or more and 9% by mass or less. The transferability from the thermal transfer sheet can be improved by setting the content of the release agent in the protective layer within the above numerical range.

  The thickness of the protective layer is preferably 1 μm or more and 10 μm or less, and more preferably 2 μm or more and 7 μm or less. By setting the thickness of the protective layer within the above-mentioned numerical range, the image formed on the adhesive layer can be better protected and its durability can be further improved.

(Peeling layer)
As described later, the release layer is a layer provided on the laminate of the present invention in order to favorably transfer the transfer layer provided in the thermal transfer sheet.
In one embodiment, the release layer contains a cellulose resin, a vinyl resin, a polyurethane resin, a silicone resin, a fluorine resin, a fluorine modified resin, a wax and the like.
Examples of the wax include microcrystalline wax, carnauba wax, paraffin wax, Fischer Tropsch wax, various low molecular weight polyethylenes, wood wax, beeswax, bees wax, bamboo wax, wool wax, shellac wax, candelilla wax, petrolactam, some Modified wax, fatty acid ester, fatty acid amide and the like can be mentioned. Among these, polyethylene wax is particularly preferred.

  The thickness of the release layer is not particularly limited, but can be 0.1 μm or more and 5 μm or less.

(Information recording layer)
The information recording layer is a layer on which an image is formed, and vinyl resins such as polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, cellulose acetate And resin materials including resins such as cellulose resins, polyester resins, polycarbonate resins, and polyolefin resins.

  The image may be formed by a conventionally known printing method such as thermal transfer printing, gravure printing, offset printing, intaglio printing, screen printing and the like.

  The thickness of the information recording layer is not particularly limited, and can be, for example, 0.5 μm to 10 μm.

(Card manufacturing method)
In one embodiment, the card | curd of this invention can be manufactured by heat-pressing and laminating | stacking a front substrate, the said laminated body, and a back substrate. The heating temperature at this time is preferably 50 ° C. or more and 130 ° C. or less, and more preferably 60 ° C. or more and 100 ° C. or less.

  In another embodiment, the card of the present invention can be produced by transferring a transfer layer provided on a thermal transfer sheet onto an adhesive layer provided on the above-mentioned laminate.

  In one embodiment, the thermal transfer sheet that can be used to manufacture the card of the present invention is a protective layer thermal transfer sheet comprising a back layer, a substrate, and a protective layer as a transfer layer in this order. The thermal transfer sheet may also include a release layer between the substrate and the protective layer, and the release layer is included in the transfer layer.

  In one embodiment, the thermal transfer sheet that can be used to manufacture the card of the present invention is an intermediate transfer recording medium provided with a back layer, a substrate, and an information recording layer as a transfer layer in this order. The thermal transfer sheet may also be provided with a protective layer between the substrate and the information recording layer. The thermal transfer sheet may also be provided with a release layer between the substrate and the information recording layer or the protective layer. The protective layer and the release layer are also included in the transfer layer.

  The back layer can contain (meth) acrylic resin, vinyl resin, polyester resin, polyurethane resin, cellulose resin, polyamide resin, acetal resin, polycarbonate resin and the like.

  In addition, the back layer can contain waxes, higher fatty acid amides, metal soaps, silicone oils, surfactants, and the like for the purpose of improving slip properties.

  The thickness of the back layer is not particularly limited, and can be, for example, 0.1 μm or more and 5 μm or less.

Examples of the substrate include paper materials such as coated paper, printing paper, high-quality paper and kraft paper, polyester resins, polyamide resins, polyolefin resins, vinyl resins, (meth) acrylic resins, polyimide resins, A film composed of a cellulose resin, a polystyrene resin, a polycarbonate resin, an ionomer resin or the like can be used.
Moreover, the laminated body of the above-mentioned resin film can also be used as a base material.

  The thickness of the substrate is not particularly limited, and can be, for example, 2.5 μm or more and 100 μm or less.

  The protective layer, release layer and information recording layer provided in the thermal transfer sheet are as described above.

  Moreover, when the said laminated body is equipped with a peeling base material, the manufacturing method of the card | curd of this invention heat-presses, and it has a process of laminating | stacking a base material, or peeling the peeling base material before transferring a transfer layer .

  In one embodiment, the method for producing a card of the present invention includes the step of forming an image on the front and back adhesive layers after peeling of the front and back release substrates. The formation of the image can be carried out by the above-mentioned conventionally known method.

  In one embodiment, the method of manufacturing a card of the present invention includes the step of punching out into a desired card shape by a conventionally known method.

  EXAMPLES The present invention will next be described in more detail by way of examples, which should not be construed as limiting the invention thereto.

Example 1
A 188 μm-thick PET film was prepared as a front and back peeling substrate.

  A surface adhesive layer with a thickness of 3 μm made of vinyl chloride-vinyl acetate copolymer (Shinshin Chemical Co., Ltd. product, Solvain C (registered trademark)) on one surface of the front surface peeling substrate and the back surface peeling substrate A back adhesive layer was formed.

  A moisture curing type hot melt adhesive was applied on the front adhesive layer and the back adhesive layer formed as described above, and then an inlet was placed on the front adhesive layer.

  After arranging the inlet, the above two laminates were heated and pressed so that the front adhesive layer and the rear adhesive layer face each other, to obtain a laminate of the present invention. At this time, the heating temperature was 90.degree. The thickness of the card core layer in which the inlet was accommodated was 400 μm.

Example 2
The lamination was performed in the same manner as in Example 1 except that the vinyl chloride-vinyl acetate copolymer used to form the adhesive layer was changed to PVB (S-Seki Chemical Co., Ltd., Eslek (registered trademark) BL-S). The body was made.

Example 3
The same procedure as in Example 1 was carried out except that the vinyl chloride-vinyl acetate copolymer used to form the adhesive layer was changed to an acrylic resin (manufactured by Mitsubishi Chemical Corporation, Dianal (registered trademark) BR-83). The laminate was made.

<< Image formation easiness examination >>
The surface peeling base material provided in the laminate obtained in the above example was peeled off, and an image was formed on the surface adhesive layer exposed by thermal transfer. The formed image was visually observed, evaluated according to the following evaluation criteria, and represented in Table 1.
(Evaluation criteria)
A: Defects such as print unevenness and print omission were not observed, and a good image was obtained.
B: Uneven printing and missing printing were slightly recognized, but an image having no problem in practical use was obtained.
NG: Problems such as uneven printing and missing printing were recognized in the image.

<< Adhesiveness test >>
The surface peeling base material and back peeling base material with which the laminated body obtained in the said Example is equipped were peeled. A card (laminated film / wood free paper) by superposing 150 μm thick woodfree paper and 250 μm thick laminated film as a front base and back base on the front adhesive layer and back adhesive layer and heating and pressing / Front adhesive layer / card core layer / back adhesive layer / fine paper / laminate film) was produced. At this time, the heating temperature was 100.degree.
The front substrate of the produced card was manually peeled off. The adhesion of the front substrate to the card core layer was evaluated according to the following evaluation criteria and is shown in Table 1.
(Evaluation criteria)
A: The adhesion between the front substrate and the card core layer was very high, and part of the card core layer was also peeled off by peeling off the front substrate.
B: The adhesiveness between the front substrate and the card core layer was high, and peeling of the front substrate was difficult.
NG: The adhesion between the front substrate and the card core layer was low, and the front substrate could be easily peeled off.

10: laminate, 11: front adhesive layer, 12: inlet, 13: card core layer, 14: back adhesive layer, 15: front peeling substrate, 16: back peeling substrate, 17: inlet substrate, 18: IC Chip, 19: Antenna, 20: Reinforcement plate, 21: Card, 22: Front substrate, 23: Back substrate, 24: Pre-printed layer, 25: Front transfer layer, 26: Back transfer layer, 27: Protective layer, 28: Peeling layer

Claims (10)

  A laminate comprising a front adhesive layer, a card core layer containing an inlet, and a rear adhesive layer in this order. A front surface peeling substrate, a front surface adhesive layer, a card core layer containing an inlet, a rear surface adhesive layer, and a rear surface peeling substrate in this order;
The laminate, wherein the front adhesive layer and the back adhesive layer remain on the card core layer side when the front peeling substrate and the back peeling substrate are peeled off.   A release layer is further provided between at least one of the front and rear release substrates, the front and rear adhesive layers, and the back and rear release substrates, and the rear adhesive layer. The laminated body as described in.   The layered product according to any one of claims 1 to 3 whose thickness of said front adhesion layer and said back adhesion layer is 1 micrometer or more and 10 micrometers or less.   The laminate according to any one of claims 1 to 4, wherein at least one of the front adhesive layer and the back adhesive layer contains a vinyl chloride-vinyl acetate copolymer. It is a card produced by the layered product according to any one of claims 1 to 5,
A card comprising a front substrate, the front adhesive layer, the card core layer, the back adhesive layer, and the back substrate in this order.   The pre-printed layer according to claim 6, further comprising a pre-printed layer between at least one of the front substrate, the front adhesive layer, and the back substrate and the back adhesive layer. Card. It is a card produced by the layered product according to any one of claims 1 to 4,
A card comprising a front transfer layer, the front adhesive layer, the card core layer, the back adhesive layer, and the back transfer layer in this order.   The card according to claim 8, wherein at least one of the front transfer layer and the back transfer layer comprises a protective layer.   The card according to claim 8 or 9, wherein at least one of the front transfer layer and the back transfer layer comprises a release layer and a protective layer in this order.