JP2003205557A - Laminate, method and apparatus for producing laminate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the interlayer peeling of a laminate by protecting the cut end face of the laminate after adhesion from heat, water, chemicals, etc. <P>SOLUTION: In the laminate 1 in which the first base material 2 and the second base material 3 are laminated through an adhesive layer 4, a protective member 10 is formed integrally with the circumferential side end face 1a of the laminate 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminate obtained by laminating a first base material and a second base material via an adhesive layer,
The present invention relates to a laminated body manufacturing method and a laminated body manufacturing apparatus.

[0002]

2. Description of the Related Art It is known to manufacture a laminated body by laminating a plurality of base materials through an adhesive layer using a laminating apparatus or the like. For example, it is used for building materials such as door panels and wall materials, optical disks, etc. There is a recording material application, and a card application such as an IC card in which electronic parts are embedded between plastic substrates.

[0003]

In these, it is common to bond members of a size to be used in advance, or to size-cut to a predetermined size after bonding, and the end portion of the laminate has a surface. When the base material and adhesive layer are laminated and exposed to unpredictable heat and moisture even in the operating environment, the adhesive strength deteriorates and the base material peels off. It may happen.

Particularly, in personal identification cards such as passports and identification cards, facial photographs and various items to be recorded are printed on the surface of the base material, and if the base material is easily peeled off, it is easy to falsify. .

Further, for example, among IC cards manufactured by the conventional bonding type IC card manufacturing method, when used in another device, the IC card is not smoothly transported in the device. This is a problem that causes troubles and often causes defective IC cards.

Further, there is a problem that if an IC card which has no problem at the beginning of manufacture is used one or two months after manufacture, it cannot be used normally.

The present invention has been made in view of the above circumstances, and a laminated body which protects the cut end surface of the laminated body from heat, moisture, chemicals, etc. to prevent the laminated body from delaminating, An object of the present invention is to provide a method for manufacturing a laminated body and an apparatus for manufacturing a laminated body.

[0008]

In order to solve the above-mentioned problems and to achieve the object, the present invention has the following constitution.

According to a first aspect of the present invention, "a laminated body in which a first base material and a second base material are bonded to each other via an adhesive layer, a protective member is provided on an outer peripheral end surface of the laminated body. -A laminated body characterized by being formed as a body. ], The cut end face of the laminated body can be protected from heat, moisture, chemicals, etc., and the interlayer peeling between the base material and the adhesive layer can be prevented, which prevents falsification and alteration.
Moreover, it is possible to maintain the strength of the laminated card.

[0010] The invention according to claim 2 is "a laminate according to claim 1, wherein the protective member contains inorganic particles. It is possible to protect from heat, moisture and chemicals.

The invention according to claim 3 is that "the protective member is formed by applying a resin, and the laminated body according to claim 1 or 2. ], The protective member can be easily formed by applying a resin to the outer peripheral side end surface of the laminated body.

According to a fourth aspect of the invention, "the protective member is formed by transferring a protective foil, and the laminate according to the first or second aspect. ], It is possible to easily form the protective member by transferring the protective foil to the outer peripheral side end surface of the laminated body.

According to a fifth aspect of the present invention, "the laminate is in the form of a card and is formed by thermally transferring a protective foil for protecting the card surface to the printing surface and the outer peripheral side end surface. The layered product according to any one of claims 1 to 4. It is possible to easily form the protective member by thermally transferring the protective foil for protecting the card surface to the printing surface and the outer peripheral side end surface.

According to a sixth aspect of the present invention, "the adhesive layer contains a module capable of recording or communicating at least electronic information therein. The laminated body according to. ], And can be used for personal identification cards such as passports and identification cards.

According to a seventh aspect of the present invention, "a card for personal identification, wherein the laminated body can be used as a card, and at least images or characters are thermally transferred and recorded on the surface of the card. The laminated body according to any one of claims 1 to 6. It is possible to prevent forgery or alteration of the personal identification card, in which at least an image or a character is thermally transferred and recorded.

According to an eighth aspect of the invention, "a laminated body obtained by laminating a first base material and a second base material via an adhesive layer is a card-shaped laminate, and a sheet-shaped laminated body. A method for manufacturing a laminated body, which comprises punching out a plurality of cards having a predetermined size from a body, and applying a protective member to the end face on the outer peripheral side of the laminated body while punching into a card shape. By applying the protective member to the outer peripheral side end surface of the laminated body while punching it into a card shape, it is possible to easily and quickly embody the protective member on the outer peripheral side end surface of the laminated body.

According to a ninth aspect of the present invention, there is provided a "die for punching into a card shape a sheet-like laminated body obtained by bonding a first base material and a second base material with an adhesive layer in between, A laminated structure characterized by having a mechanism for supplying a protective member to a portion of the mold which is punched into a card shape and in contact with the card outer peripheral end surface, and applying the protective member to the card outer peripheral end surface while punching into a card shape. Body manufacturing equipment. By applying the protective member to the outer peripheral side end surface of the laminated body while punching it into a card shape, it is possible to easily and quickly embody the protective member on the outer peripheral side end surface of the laminated body.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the laminate, the method for producing a laminate and the apparatus for producing a laminate according to the present invention will be described below with reference to the drawings. However, the present invention is limited to this embodiment. Not done.

FIG. 1 is a plan view in which a part of the personal identification card is cut away, and FIG. 2 is a sectional view of the personal identification card. The card for personal authentication identification of this embodiment uses a laminated body 1 formed by bonding a first base material 2 and a second base material 3 via an adhesive layer 4 as a card. An image 5, key information 6, and characters 7 are thermally transferred and recorded on the surface.

The adhesive layer 4 has a built-in module 8 capable of recording or communicating at least electronic information. The module 8 is composed of an antenna 8a and an IC component 8b, and is used as a personal identification card such as a passport or an identification card. Can be used. The module capable of recording or communicating at least electronic information is specifically an IC chip that electrically stores information of the user of the electronic card and a coil-shaped antenna body connected to the IC chip. The IC chip is a memory only or a microcomputer in addition to the memory. In some cases, the electronic component may include a capacitor.

The present invention is not limited to this, and is not particularly limited as long as it is an electronic component required for the information recording member.

The IC module has an antenna coil, but when it has an antenna pattern, any method such as a conductive paste printing process, a copper foil etching process, or a winding welding process may be used. As the printed circuit board, a thermoplastic film such as polyester is used, and when heat resistance is required, polyimide is advantageous. The IC chip and the antenna pattern are joined by a conductive adhesive such as silver paste, copper paste, carbon paste (EN-4000 series of Hitachi Chemical Co., Ltd., XAP series of Toshiba Chemical Co., Ltd.) or anisotropic conductive film (Hitachi Chemical Co., Ltd.). A method of using an industrial silver film or the like or a method of performing solder bonding is known, but any method may be used.

In order to fill the resin after the parts including the IC chip have been placed at a predetermined position in advance, the joint portion is disengaged by the shearing force due to the flow of the resin, or the surface of the surface is broken due to the flow or cooling of the resin. In order to prevent loss of smoothness and lack of stability, a resin layer is formed on the substrate sheet in advance and the electronic component is sealed with a porous resin film or a porous resin film in order to encapsulate the component in the resin layer. It is preferable to use it in the form of a high quality foamable resin film, a flexible resin sheet, a porous resin sheet or a non-woven fabric sheet. For example, Japanese Patent Application No. 11-
The method described in No. 105476 and the like can be used.

For example, as the non-woven sheet member, there are mesh-like woven fabric such as non-woven fabric, plain woven fabric, twill woven fabric and satin woven fabric. In addition, moquette, plush velour, seal, velvet, woven fabric having a pile called suede, and the like can be used. Material is nylon 6,
Polyamide such as nylon 66 and nylon 8, polyester such as polyethylene terephthalate, polyolefin such as polyethylene, polyvinyl alcohol, polyvinylidene chloride, polyvinyl chloride, acrylic such as polyacrylonitrile, acrylamide and methacrylamide, polycyan One selected from synthetic resin such as vinylidene chloride, polyfluoroethylene and polyurethane, natural fiber such as silk, cotton, wool, cellulose and cellulose ester, recycled fiber (rayon, acetate) and aramid fiber Or the fiber which combined 2 or more types is mentioned. Among these fiber materials, polyamide-based materials such as nylon 6 and nylon 66, acrylic-based materials such as polyacrylonitrile, acrylamide and methacrylamide, and polyester-based materials such as polyethylene terephthalate are preferred.
Examples of the regenerated fiber include cellulose-based and cellulose ester-based rayon and acetate, and aramid fiber.

Further, since the IC chip has a weak point pressure strength, it is also preferable to have a reinforcing plate near the IC chip.

A protective member 10 is integrally formed on the outer peripheral side end surface 1a of the laminated body 1, and the cut end surface of the laminated body 1 is protected by the protective member 10 from heat, moisture, chemicals and the like. It is possible to prevent interlayer peeling of the base material 2, the second base material 3 and the adhesive layer 4, prevent forgery and alteration, and maintain the strength of the card of the laminate 1.

The protective member 10 is formed by applying a resin, and can be easily formed on the outer peripheral side end surface 1a of the laminated body 1. The protective member 10 contains inorganic particles, heat,
Can be protected from moisture and chemicals.

Further, as shown in FIG. 3, the protective foil can be transferred to the outer peripheral side end surface 1a of the laminated body 1 to easily form the protective member 10. The laminate 1 is in the form of a card and is formed by thermally transferring a protective foil for protecting the card surface to the printing surface 1b and the outer peripheral side end surface 1a. As the protective foil, polyvinyl butyral resin, polyurethane resin, polyamide resin, polyester resin, epoxy resin, novolac resin, vinyl monomer such as styrene, paramethylstyrene, methacrylic acid ester, acrylic acid ester or the like, cellulose-based, thermoplastic polyester , Other natural polymers such as natural resins may be used in combination. Also, in addition, Kiyoshi Akamatsu's supervision, "Practical Technology of New Photosensitive Resin," (CMC, 1987) and "10188 Chemical Products"
You may use together the well-known organic high molecular polymer of the industry described in pages 657-767 (chemical industry daily company, 1988). The thickness of the transparent resin layer is preferably 0.3 to 50 μm, more preferably 0.3 to 30 μm, and particularly preferably 0.3 to 20.
μm. A heat-adhesive resin is provided as an adhesive layer on the surface of the protective foil, and is thermally transferred to the surface of the laminate through the heat-adhesive resin. As the heat-adhesive resin, for example, ethylene vinyl acetate resin, ethyne ethyl acrylate resin, ethylene acrylic acid resin, ionomer resin, polybutadiene resin, acrylic resin, polystyrene resin, polyester resin, olefin resin, urethane resin, tackifier (eg phenol Resins, rosin resins, terpene resins, petroleum resins, etc.) and copolymers or mixtures thereof may be used.

Specifically, the urethane-modified ethylene ethyl acrylate copolymer is Hitech S-6254, S-6254B, S-312 manufactured by Toho Chemical Industry Co., Ltd.
9 and the like are commercially available, and as the polyacrylic acid ester copolymer, Jurimer AT-210 and AT manufactured by Nippon Pure Chemical Industries, Ltd.
-510, AT-613, plus size L-201, SR-103, J-4 and the like manufactured by Kyogo Chemical Industry Co., Ltd. are commercially available. The weight ratio of the urethane-modified ethylene ethyl acrylate copolymer and the polyacrylic acid ester copolymer is preferably 9: 1 to 2: 8, and the thickness of the adhesive layer is 0.1 to 10.
1.0 μm is preferable.

FIG. 4 is a perspective view of an example of a laminate punching device, and the punching shape of the laminate is not limited to the illustrated shape. FIG. 5 is a schematic configuration diagram of a die for punching into a card shape.

The laminated body manufacturing apparatus 20 includes a die 21 for punching the sheet-shaped laminated body 1 into a card shape.
Consists of an upper mold 21a and a lower mold 21b. Upper mold 21
a has a pressing member 21a1 and a cutting member 21a2,
The sheet-shaped laminated body 1 is moved to the lower mold 2 by the pressing member 21a1.
1b is pressed to be positioned, and the cutting member 21a2 is actuated to punch the sheet-shaped laminated body 1 into a plurality of cards having a predetermined size.

A supply path 21b1 is formed in the lower mold 21b, and the resin can be supplied from the resin tank 23 to the supply path 21b1 by driving the supply pump 22 and is in contact with the card outer peripheral side end surface 1a punched into a card shape. It has a mechanism for supplying a protective member to the portion. Although not shown, an application assisting mechanism member such as a porous body or a woven fabric may be provided at the outlet through which the protective member is supplied to the outer peripheral end surface of the card.

A plurality of cards having a predetermined size are punched out from the sheet-shaped laminated body 1, and the resin is supplied from the supply passage 21b1 while being punched out into the card shape to apply the resin to the outer peripheral side end surface 1a of the laminated body 1. As a result, the protective member can be easily and quickly integrated into the outer peripheral side end surface 1a of the laminated body 1. The method of applying the protective member is not limited to the above example, and the protective layer is formed on the outer peripheral side end surface of the laminate by punching it into individual shapes, for example, by spray coating, roll coating, or dip coating. It doesn't matter.

In this embodiment, the first substrate 2 and the second substrate 2
For the adhesive layer 4 between the base material 3 and the base material 3, a reactive hot melt adhesive such as an epoxy-based two-liquid mixed type, a UV curable adhesive, a hot melt adhesive, preferably a moisture curable adhesive is used. For example, the main component of hot melt adhesives is ethylene-vinyl acetate copolymer (EVA)
Adhesives such as type, polyester type, polyamide type, thermoplastic elastomer type and polyolefin type adhesives can be used. A moisture-curable material as a reactive hot melt adhesive is disclosed in JP-A-2000-036026 and JP-A-2000-21985.
5, JP-A-2000-212178, JP-A-2000-36
9855. JP-A-10-316959 and JP-A-11-5964 are disclosed as photo-curable adhesives.

The first base material 2 and the second base material 3 are made of resin,
Paper, etc. can be used. For example, polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate / isophthalate copolymers, polyolefin resins such as polyethylene, polypropylene and polymethylpentene, polyvinyl fluoride,
Polyfluoroethylene-based resins such as polyvinylidene fluoride, polytetrafluoroethylene, ethylene-4 fluoroethylene copolymer, polyamides such as nylon 6 and nylon 66,
Polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, ethylene / vinyl acetate copolymer, ethylene / vinyl alcohol copolymer, polyvinyl alcohol, vinyl polymers such as vinylon, biodegradable aliphatic polyester, biodegradable polycarbonate , Biodegradable polylactic acid, biodegradable polyvinyl alcohol, biodegradable cellulose acetate, biodegradable resin such as biodegradable polycaprolactone, cellulose triacetate, cellulosic resin such as cellophane, methyl polymethacrylate, polymetha Acrylic resin such as ethyl acrylate, polyethyl acrylate, polybutyl acrylate, etc., synthetic resin sheet such as polystyrene, polycarbonate, polyarylate, polyimide, or paper such as woodfree paper, thin paper, glassine paper, sulfuric acid paper, metal Single layer such as foil or two or more layers Layer body, and the like.

The resin used as the protective member may be one having sufficient heat resistance and water resistance while maintaining sufficient adhesive strength under the environment where the laminate is used.
For example, polyetheretherketone (PEEK), polyethersulfone (PES), polyetherimide (PEI), polysulfone (PSF), polyamide (PA), polyimide (PI), polyamideimide (P).
AI) or polytetrafluoroethylene (PTFE)
A material or the like can be used. Further, it may be a reactive resin such as a photocurable resin. As the inorganic particles contained in the resin of the protective member, for example, white pigment, TiO2, scale pigment ink or the like can be selected. Example 1 A pair of optical disk single plates having the same structure in which a recording layer is formed on one main surface of a polyacrylic resin base material and a protective film is formed on the recording layer, respectively. A laminated body having a constitution in which the recording surfaces (the surface side on which the recording layer is formed) of the base material are abutted and adhered to each other via an adhesive layer made of a hot melt resin applied and formed on the protective film. Was produced.

Then, the end face of the laminate, which is the periphery of the laminate, was coated with a fluororesin to a thickness of 20 μm.

Environmental tests of this laminate were conducted under the following conditions.

1. Leave at 90 ° C. for 7 days 2. Leave at 40 ° C., RH 90% for 48 hours In the examples that were left immersed in water for 1 day, no problems such as peeling of the surface material and deterioration of the adhesive occurred in each environmental test test.

Example 2 Thickness 0.18 mm, width 400 mm, length 400
A 0.2 mm thick hot melt adhesive layer is coated on a PET sheet of mm, and the maximum thickness is 0.3 m.
I consisting of a transmitting and receiving antenna coil which is m and an IC chip
The C modules were mounted in a 3x6 array.

The softening temperature of the hot melt adhesive layer is 70 ° C.
Moisture-curable polyurethane hot melt was used.

On the mounted IC module, a surface sheet (0.18 mm-thick PET sheet) obtained by coating the same 0.2 mm-thick hot melt adhesive layer as described above with the adhesive layers facing each other. Laminated. After that, 75
Hot pressing was performed under the conditions of ° C, 5 kgf / cm ² and 30 sec to produce 18 IC card sheets.

Next, a 0.76 mm-thick non-contact type IC card including an IC chip and an antenna is obtained by punching into a predetermined size with a card mold shown in FIGS. 4 and 5. At this time, a slit for extruding the protective resin from the inside of the female mold of the card mold is provided, and the ultraviolet curable resin containing the scale pigment ink is supplied from this slit to about 30 μm.
The coating was performed so as to have a thickness of m.

The card punched out by the card mold is coated with an ultraviolet curable resin at the end inside the female mold, and is discharged downward. After taking out the card, the mixture of the coating liquid 1 containing the ultraviolet curable resin and the scale pigment ink was used under the following curing conditions and a high pressure mercury lamp of 60 W / cm ² was used as a light irradiation source. It was irradiated for 3 seconds and cured to form an ultraviolet curing protective layer.

[UV-Curable Resin-Containing Coating Liquid 1] Bis (3,4-epoxy-6-methylcyclohexylmethyl) adipate 70 parts Bisphenol A glycidyl ether 10 parts 1,4-butanediol glycidyl ether 13 parts Triarylsulfonium fluoroantimony 7 parts The laminated body thus obtained was similarly subjected to an environmental test under the following conditions.

1. Leave at 90 ° C for 7 days 2. Leave at 40 ° C, RH 90% for 48 hours In the examples that were left immersed in water for 1 day, no problems such as peeling of the surface material and deterioration of the adhesive occurred in each environmental test test. [Comparative Example] As a comparative example, the method for manufacturing a laminate is described in Example 2.
It is the same as, when punching to a predetermined size with a mold,
A card in which a protective member was not formed on the end face on the outer peripheral side of the card was evaluated.

The same environmental test as in Example 2 was carried out under the following conditions.

1. Leave at 90 ° C for 7 days 2. Leave at 40 ° C, RH 90% for 48 hours In the sample subjected to the environmental test under conditions of 1 and 2 immersed in water for 1 day, peeling between the sheet material and the adhesive layer having a depth of about 1 mm from the edge (although there is a gap) Occurrence) was observed.

In the sample subjected to the environmental test under the condition 3,
Peeling occurred between the sheet material and the adhesive layer having a depth of about 5 mm from the edge.

When the card was passed through a sublimation printer for surface printing using this sample card, it was caught by a transport roll and normal printing could not be performed.

[0051]

As described above, according to the first aspect of the invention, the cut end face of the laminate can be protected from heat, moisture, chemicals, etc., and delamination between the base material and the adhesive layer can be prevented. It is possible to prevent the damage, and it is possible to maintain the strength of the laminated card.

According to the second aspect of the present invention, it is possible to protect from heat, moisture, chemicals and the like.

In the third aspect of the invention, the protective member can be easily formed by applying the resin to the outer peripheral side end surface of the laminate.

According to the fourth aspect of the invention, the protective foil can be transferred to the outer peripheral side end surface of the laminate to easily form the protective member.

According to the fifth aspect of the present invention, the protective foil for protecting the card surface can be thermally transferred to the printing surface and the outer peripheral side end surface to easily form the protective member.

The invention according to claim 6 can be used for a personal identification card such as a passport or an identification card.

According to the seventh aspect of the invention, it is possible to prevent at least an image or a character from being thermally transferred and recorded on the personal authentication identification card from being falsified.

In the eighth aspect of the present invention, the protective member is applied to the outer peripheral side end surface of the laminated body while punching it into a card shape, so that the protective member is integrated into the outer peripheral side end surface of the laminated body. be able to.

In the ninth aspect of the present invention, the protective member is applied to the outer peripheral side end surface of the laminated body while punching it into a card shape, so that the protective member is integrated into the outer peripheral side end surface of the laminated body. be able to.

[Brief description of drawings]

FIG. 1 is a plan view in which a part of a personal identification card is cut away.

FIG. 2 is a sectional view of a personal identification card.

FIG. 3 is a cross-sectional view of a personal identification card according to another embodiment.

FIG. 4 is a perspective view of an example of a punching device for a laminate.

FIG. 5 is a schematic configuration diagram of a die for punching into a card shape.

[Explanation of symbols]

1 stack 1a Outer end face 2 First base material 3 Second base material 4 Adhesive layer 10 Protective member

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2C005 MA11 MB01 NA09 PA04 PA12                       PA14 PA19 PA21 PA29 RA09                 4F100 AT00A AT00B BA02 BA10A                       BA10B CB00 DB01 EC04A                       GB71 HB31A                 5B035 BA05 BB09 CA01 CA23

Claims (9)

[Claims] 1. A laminate obtained by laminating a first base material and a second base material via an adhesive layer, wherein a protective member is integrally formed on the outer peripheral side end surface of the laminate. Characteristic laminate. 2. The laminate according to claim 1, wherein the protective member contains inorganic particles. 3. The laminate according to claim 1, wherein the protective member is formed by applying a resin. 4. The laminate according to claim 1, wherein the protective member is formed by transferring a protective foil. 5. The laminate according to claim 1, wherein the laminate has a card-like shape, and a protective foil for protecting the card surface is formed by thermal transfer to the printing surface and the outer peripheral side end surface. The laminate according to any one of items. 6. The laminate according to claim 1, wherein the adhesive layer contains a module capable of recording or communicating at least electronic information. 7. The personal authentication identification card, wherein the laminated body can be used as a card and at least an image or a character is thermally transferred and recorded on the surface of the card. The laminate according to any one of items. 8. A card-shaped laminate formed by laminating a first base material and a second base material with an adhesive layer in between, and a plurality of sheets having a predetermined size from a sheet-shaped stack body. 2. A method for manufacturing a laminated body, comprising punching into a card shape, and applying a protective member to the outer peripheral side end surface of the laminated body while punching into the card shape. 9. A die for punching into a card shape a sheet-like laminate obtained by laminating a first base material and a second base material via an adhesive layer, and punching into a card shape of this mold. An apparatus for manufacturing a laminate, comprising a mechanism for supplying a protective member to a portion of the card outer peripheral side end face, which is applied to the card outer peripheral side end face while punching into a card shape.