JP2013176918A - Hinge sheet, radio communication information holding sheet body, radio communication information holding booklet, and method of manufacturing the hinge sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge sheet having relatively high tensile strength and tearing strength, and difficult to be restored to an original state when damage is inflicted thereon.SOLUTION: A hinge sheet includes a pair of resin films, and a sheet made of fiber arranged between the pair of resin films in which each fiber of the resin films and the sheet formed of fiber includes the same polymer as a main constituent. A difference between the refractive index of the resin film and the refractive index of the sheet made of fiber is preferably ≤0.1, each main constituent of the resin film and the sheet made of fiber is preferably an urethane-based resin, a part of the resin film preferably enters spaces of the fibers of the sheet formed of fiber, an average thickness is preferably 50-300 μm, the pair of resin films contain coloring agents, and the sheet formed of fiber preferably has a color identical to a color of the coloring agent.

Description

  The present invention relates to a hinge sheet, a wireless communication information holding sheet body, a wireless communication information holding booklet, and a hinge sheet manufacturing method.

  As the wireless communication information booklet as described above, for example, there is an IC passport (electronic passport) incorporating an IC chip. This IC passport incorporates an IC chip in a laminated sheet (plastic sheet) on which personal information such as name and nationality is printed in order to prevent forgery and tampering, and the personal information is also stored in this IC chip.

  The laminated sheet used for this IC passport is required to have high tensile strength and tear strength in order to prevent data falsification due to exchange of IC chips or the like. As a laminated sheet for improving these strengths, a sheet in which a thermoplastic resin layer is laminated on both surfaces of a woven sheet has been proposed (see JP 2011-079285).

  In the laminated sheet, the woven sheet has an opening, and a part of the thermoplastic resin layer penetrates into the opening, thereby integrating a part of the interface between the woven sheet and the thermoplastic resin layer. In order to improve the strength of the sheet, it is devised to flatten the sheet.

  However, in the above laminated sheet, even if a tamper breaks or separates the sheet and replaces the IC chip, and then repairs the sheet by joining and repairing it, it is difficult to find the trace, and tampering may not be found. Therefore, there is room for improvement in the means for preventing falsification of wireless communication information booklets such as IC passports.

JP 2011-079285 A1

  The present invention has been made based on the circumstances as described above, has a relatively high tensile strength and tear strength, and it is difficult to restore the original state when damaged, An object of the present invention is to provide a wireless communication information holding sheet body, a wireless communication information holding booklet using the hinge sheet, and a method for manufacturing the hinge sheet.

The invention made to solve the above problems is
A pair of resin films;
A fiber sheet disposed between the pair of resin films,
In the hinge sheet, the resin film and the fiber sheet fiber are mainly composed of the same polymer.

  The hinge sheet has a relatively high tensile strength and tear strength by including a fiber sheet. In particular, since the resin film and the fiber sheet are mainly composed of the same polymer, the adhesiveness between the resin film and the fiber sheet is excellent, and the interface between the resin film and the fiber sheet is likely to be integrated. For this reason, this interface is not easily recognized, and the hinge sheet is likely to be visually recognized like a single layer material. Moreover, since the resin film and the fiber sheet are excellent in adhesion as described above, it is difficult to peel off at the interface between the resin film and the fiber sheet. Furthermore, even if it peels off at this interface, the other part tends to remain following one of the resin film and the fiber sheet, and the remaining part is easily recognized as a defective part even if it is repaired by heating or the like thereafter. , Has high restoration difficulty. For this reason, even if it tries to falsify the wireless information holding sheet using the hinge sheet by peeling or the like at the hinge sheet portion, the hinge sheet is difficult to restore, and as a result, has an effect of preventing falsification.

  The hinge sheet preferably has a refractive index difference of 0.1 or less between the resin film and the fiber sheet. Thus, by making the refractive index difference between the resin film and the fiber sheet within the above range, light entering from the resin film is less likely to be reflected at the interface of the fiber sheet, and this interface is difficult to be visually recognized. Therefore, the hinge sheet can be easily seen like a single layer material.

  In the hinge sheet, the main component of the resin film and the fiber sheet is preferably a urethane resin. Thus, when the main component of the resin film and the fiber sheet is a urethane resin, the wear resistance and flexibility of the resin film can be improved, and the strength of the hinge sheet can be increased.

  In the hinge sheet, it is preferable that a part of the resin film enters a gap between fibers of the fiber sheet. Thus, by the resin film entering the gap between the fibers, the adhesion between the resin film and the fiber sheet is improved, and the interface between the resin film and the fiber sheet is more likely to be integrated. It can be difficult to peel.

  The hinge sheet may have a structure in which a part of the resin film enters the gap between the fibers of the fiber sheet, but has a gap that does not allow the resin film to enter the gap between the fibers of the fiber sheet. You can also. Thus, by having a space | gap in a fiber sheet | seat, it can prevent that a fiber sheet | seat becomes integral with the resin film as a whole, uniting an interface. As a result, it is possible to prevent a decrease in tear strength of the hinge sheet.

  The hinge sheet preferably has an average thickness of 50 μm to 300 μm. In this way, by setting the average thickness of the hinge sheet within the above range, the interface between the fiber sheet and the pair of resin films is recognized while giving the hinge sheet constant tensile strength and tear strength, handling properties, and the like. Can be made difficult.

  In the hinge sheet, the pair of resin films preferably contain a colorant, and the fiber sheet preferably has the same color as the colorant. Thus, when the pair of resin films contain the colorant and the fiber sheet is the same color as this colorant, the hinge sheet is laser-laminated from the front side when the laser printing layer is laminated on the front and back surfaces. When the laser printing layer on the front surface side is printed by irradiating light, the laser light from the front surface side is shielded by the resin film containing the colorant and the colored fiber sheet. Printing failure can be prevented. Similarly, even if the laser printing layer on the back surface side is printed by irradiating the laser beam from the back surface side, printing failure of the laser printing layer on the front surface side can be prevented. In addition, since the resin film and the fiber sheet are colored in the same color, it is possible to further prevent the interface from being recognized.

Further, the wireless communication information holding sheet body according to the present invention,
The hinge sheet;
Laminated on one side of this hinge sheet, a wireless communication layer containing an antenna,
A laser printing layer laminated on one side of the wireless communication layer,
The hinge sheet has a protruding portion that protrudes in a planar direction from the other layers.

  Since the wireless communication information holding sheet has a wireless communication layer, it can transmit information held to other external wireless terminals, and can be used, for example, for an electronic passport. Moreover, since the said radio | wireless communication information holding sheet body has the said hinge sheet | seat, it is excellent in tensile strength and tear strength, and also has the tampering prevention effect.

  The wireless communication information holding sheet body is configured to further include a wireless communication layer that is stacked on the other surface of the hinge sheet and incorporates an antenna, and a laser printing layer that is stacked on the other surface side of the wireless communication layer. It is possible to adopt. Thereby, more information can be held by the pair of front and back wireless communication layers.

  The wireless communication information holding sheet body is separated from the wireless communication layer in the vicinity of the projecting end of the projecting portion of the hinge sheet, and is stacked on one surface of the hinge sheet and has another built-in antenna. It is possible to adopt a configuration including a layer and another laser printing layer stacked on one surface side of the other wireless communication layer. Accordingly, more information can be held by the pair of wireless communication layers (when the protruding direction of the protruding portion is set to the horizontal direction).

  The wireless communication information holding sheet body can employ a configuration in which the wireless communication layer includes an IC chip connected to the antenna. As a result, more information can be held by the IC chip.

  The wireless communication information holding booklet according to the present invention has the wireless communication information holding sheet body. For this reason, it is possible to transmit information held to other external wireless terminals by the wireless communication layer of the wireless communication information holding sheet body, and for this reason, it can be suitably employed for, for example, an electronic passport. Moreover, since the said radio | wireless communication information booklet has the said hinge sheet | seat, it is excellent in tensile strength and tear strength, and also has the tampering prevention effect.

In addition, the method of manufacturing a hinge sheet according to the present invention includes
Lamination process using a substrate having releasability on one surface, laminating a thermoplastic resin composition on one surface of this substrate, and obtaining a primary laminate sheet having a substrate and a thermoplastic resin composition layer;
Using the pair of primary laminated sheets and the fiber sheet, thermocompression bonding in a state where the thermoplastic resin composition layers of the pair of primary laminated sheets are opposed to each other and the fiber sheet is disposed between the pair of primary laminated sheets, A crimping step for obtaining a secondary laminated sheet,
This is a method for manufacturing a hinge sheet in which the thermoplastic resin composition layer and the fibers of the fiber sheet are composed mainly of the same polymer.

  According to the manufacturing method of the hinge sheet, a primary laminated sheet can be formed in advance, and a secondary laminated sheet can be formed using this primary laminated sheet, that is, a thermoplastic resin composition is laminated on one surface of a substrate. By forming a thermoplastic resin layer (primary laminated sheet) in advance and laminating and bonding the thermoplastic resin layer to the fiber sheet by thermocompression bonding, the adhesion between the fiber sheet and the thermoplastic resin layer is It can be performed at a lower temperature than conventional ones. Thereby, in the hinge sheet manufactured by the manufacturing method, the thermal deterioration of the fiber of the fiber sheet is reduced as compared with the conventional hinge sheet, and sufficient tensile strength can be obtained. Furthermore, since the thermoplastic resin composition layer and the fibers of the fiber sheet are mainly composed of the same polymer, the interface between the thermoplastic resin layer and the fiber sheet is difficult to be recognized because of high adhesion, The hinge sheet obtained by the manufacturing method of the hinge sheet is visually recognized as if it were a single layer material. Moreover, since the adhesiveness between these sheets is high and difficult to peel off, there is a difficulty in restoration in which a trace of sheet peeling is likely to remain, and as a result, it has an effect of preventing falsification of IC passports and the like using the hinge sheet.

  Here, the “same polymer” means that main monomers constituting the polymer are the same.

  As described above, the hinge sheet of the present invention has a relatively high tensile strength and tear strength, and is difficult to restore to its original state when damaged. For this reason, the radio communication information holding sheet body and the radio communication information holding booklet using the hinge sheet can obtain high tamper resistance.

It is schematic explanatory drawing of the manufacturing method of the hinge sheet | seat which concerns on one Embodiment of this invention, Comprising: (a) is schematic sectional drawing after a lamination process, (b) is schematic sectional drawing after a crimping | compression-bonding process, (c) ) Is a schematic cross-sectional view after the peeling step. It is a schematic block diagram of the manufacturing apparatus used for the manufacturing method of FIG. (A) is a schematic sectional drawing of the hinge sheet | seat which concerns on one Embodiment of this invention, (b) is a schematic sectional drawing of the hinge sheet | seat which concerns on embodiment different from (a). It is a schematic sectional drawing of the radio | wireless communication information holding sheet | seat body using the hinge sheet | seat obtained by the manufacturing method of FIG. It is a schematic sectional drawing of the wireless communication information holding booklet using the wireless communication information holding sheet body of FIG. It is a schematic sectional drawing of the radio | wireless communication information holding sheet | seat body which concerns on other embodiment of this invention. FIG. 7 is a schematic cross-sectional view of a wireless communication information holding booklet using the wireless communication information holding sheet body of FIG. 6. It is a schematic sectional drawing of the radio | wireless communication information holding sheet | seat body which concerns on other embodiment of this invention.

[First embodiment]
Hereinafter, although the embodiment of the present invention is described, first, the manufacturing method of the hinge sheet of the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

<Method for Manufacturing Hinge Sheet 1>
The manufacturing method of the hinge sheet 1 of the present embodiment (hereinafter sometimes simply referred to as a manufacturing method) includes a first lamination step for obtaining a primary lamination sheet 1A, and a multilayer using the primary lamination sheet 1A obtained by the first lamination step. It has a pressure-bonding step for obtaining a laminate (secondary laminated sheet 1B), and a peeling step for peeling a part of the layers after the pressure-bonding step.

  Specifically, in the laminating step, a sheet-like base material 3 having releasability is used on one surface, and a thermoplastic resin composition is laminated on one surface of the base material 3. This is a step of obtaining a primary laminated sheet 1A having a plastic resin layer 5 (resin film). Moreover, a crimping | compression-bonding process uses the pair of primary lamination sheet 1A and fiber sheet 7 obtained by the said lamination process, makes the thermoplastic resin layer 5 of a pair of primary lamination sheet 1A mutually oppose, and a pair of primary lamination sheet 1A. It is a step of obtaining the secondary laminated sheet 1B by thermocompression bonding with the fiber sheet 7 disposed therebetween. Furthermore, a peeling process is a process of peeling a pair of base material 3 arrange | positioned by the outer surface of the secondary lamination sheet 1B obtained by the said crimping | compression-bonding process. In addition, as shown in FIG. 2, this crimping | compression-bonding process and peeling process are each performed continuously.

(Lamination process)
A lamination process is a process of laminating the thermoplastic resin layer 5 on the base material 3 as described above to form the primary laminated sheet 1A. This lamination process includes a lamination material preparation process (addition process) in which a pigment (colorant) is added to a thermoplastic resin composition as a main raw material to prepare a forming material for the thermoplastic resin layer 5, and this lamination material preparation process. And the step of laminating the above-mentioned forming material adjusted by the method on the substrate 3. Further, the primary laminated sheet 1A after this lamination step is wound into a raw fabric and sent to the next step (see FIG. 2).

  As the base material 3 used in this lamination step, a suitable sheet-like body made of a synthetic resin film, rubber sheet, paper, cloth (nonwoven fabric, etc.), net, foamed sheet, metal foil, or a laminate thereof is used. be able to. In particular, as the substrate 3, a synthetic resin film such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polyethylene terephthalate or the like can be suitably used. In order to improve the peelability from the thermoplastic resin layer 5, it is preferable that the surface of the base material 3 is subjected to a peeling treatment such as a silicone treatment, a long-chain alkyl treatment, or a fluorine treatment. The peelability of the release sheet can be controlled by adjusting the type and / or coating amount of the drug used for the release treatment.

  In the laminating step, various laminating methods can be adopted as a method for laminating the thermoplastic resin. For example, a sheet-like base material 3 is continuously supplied and melted on the base material 3. A primary laminated sheet 1 </ b> A in which a thermoplastic resin is laminated and cured to laminate a thermoplastic resin layer 5 on the substrate 3 can be obtained.

  In addition, as the thermoplastic resin composition, those in which the main component thermoplastic resin is a urethane-based resin are preferably used, and other thermoplastic resin compositions can also be used.

  Examples of the urethane resin include polyurethane that can be synthesized from a polyhydroxyl compound, diisocyanate, and a low molecular weight chain extender containing at least two hydrogen atoms that react with diisocyanate. As a production method, for example, after synthesizing a relatively high molecular weight polyurethane in a solvent, water is added little by little to carry out phase inversion emulsification, and the solvent is removed by reduced pressure, or polyethylene glycol or the like as a hydrophilic group in the polymer. There is a method in which a urethane prepolymer introduced with a carboxyl group or the like is dissolved or dispersed in water, and then reacted by adding a chain extender.

  Examples of polyhydroxyl compounds used in the production of the urethane resin include, for example, carboxylic acids such as phthalic acid, adipic acid, dimerized linolenic acid, and maleic acid; glycols such as ethylene glycol, propylene glycol, butylene glycol, and diethylene glycol. Polyester polyols obtained by dehydration condensation reaction from trimethylolpropane, hexanetriol, glycerin, trimethylolethane, pentaerythritol, etc .; polyoxypropylene glycol, polyoxybutylene glycol, polytetramethylene glycol, polyoxypropylene triol, polyoxy Started inorganic acids such as ethylene polyoxypropylene triol, sorbitol, pentaerythritol, shruce, starch, phosphoric acid And the polyoxypropylene polyols, polyether polyols such as polyoxypropylene polyoxyethylene polyol, acrylic polyol, a derivative of castor oil, tall oil derivatives, other hydroxyl compounds. These polyhydroxyl compounds can be used alone or in combination of two or more.

  Examples of the diisocyanate used in the production of the urethane resin include, for example, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, m-phenylene diisocyanate, p-phenylene diisocyanate, 4,4'-diphenylmethane diisocyanate, Tetramethylene diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, lysine diisocyanate, isophorone diisocyanate, trimethylhexamethylene diisocyanate, 1,4-cyclohexylene diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, 3,3'-dimethyl-4 , 4'-biphenylene diisocyanate, 3,3'-dimethoxy-4,4'-biphenylene diisocyanate, 3,3'-dichloro- , 4'-biphenylene diisocyanate, 1,5-naphthalene diisocyanate, 1,5-tetrahydronaphthalene diisocyanate. These diisocyanates can be used singly or in combination.

  Examples of chain extenders used for the production of urethane resins include, for example, ethylene glycol, 1,4-butanediol, trimethylolpropane, triisopropanolamine, N, N-bis (2-hydroxypropyl) aniline, hydroquinone- Polyols such as bis (β-hydroxyethyl) ether, resorcinol-bis (β-hydroxyethyl) ether, ethylenediamine, propylenediamine, hexamethylenediamine, phenylenediamine, tolylenediamine, diphenyldiamine, diaminodiphenylmethane, diaminodiphenylmethane, diamino Examples thereof include polyamines such as dicyclohexylmethane, piperazine, isophoronediamine, diethylenetriamine, and dipropylenetriamine, hydrazines, and water. These chain extenders can be used alone or in combination of two or more.

  Examples of the low-temperature adhesive resin include polyolefin copolymers such as polyethylene and polypropylene; polyester copolymers such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, and polybutylene naphthalate; or polycapro Amide (nylon-6), polyaminoundecanoic acid (nylon-11), polylauryl lactam (nylon-12), polyhexamethylenediaminoadipic acid (nylon-66), polyhexamethylenediamino sebacic acid (nylon-610), poly Polyamide homopolymers such as hexamethylene diaminododecanedioic acid (nylon-612), caprolactam / lauryl lactam copolymer (nylon-6 / 12), caprolactam / aminounde Acid copolymer (nylon-6 / 11), caprolactam / hexamethylenediaminoadipic acid copolymer (nylon-6 / 66), caprolactam / hexamethylenediaminoadipic acid / hexamethylenediaminosebacic acid copolymer (nylon) 6/66/610), and polyamide copolymers such as caprolactam / hexamethylenediaminoadipic acid / hexamethylenediaminododecanedioic acid copolymer (nylon-6 / 66/612). These polyamide resins can be used alone or in combination of two or more.

  Moreover, as a pigment added to the formation material of the thermoplastic resin layer 5, a white pigment is used suitably and an inorganic pigment can be used as a white pigment, for example. As this white pigment, for example, calcium carbonate, titanium oxide, zinc oxide, lead carbonate, barium sulfate and the like can be used. Among these, calcium carbonate is preferable because it is excellent in dispersibility in the resin material forming the synthetic resin layer and has a relatively large effect of improving the durability, heat resistance, strength, and the like of the synthetic resin layer. This calcium carbonate has crystal types such as calcite, aragonite, and vaterite, and any crystal type can be used. This calcium carbonate may be surface-treated with stearic acid, sodium dodecyl benzene sulfonate, silane coupling agent, titanium coupling agent, etc., and impurities such as magnesium oxide, aluminum oxide, silicon dioxide, titanium dioxide, etc. About 10% or less may be contained.

  The average particle diameter of the white pigment is preferably 500 nm to 30 μm, and particularly preferably 1 μm to 20 μm. If the average particle size of the white pigment is smaller than the above range, it may be difficult to uniformly disperse the synthetic resin layer in the synthetic resin layer due to aggregation or the like, and the characteristics of the white pigment may not be sufficiently exhibited. If the particle diameter exceeds the above range, the strength of the thermoplastic resin layer 5 may be reduced.

  Moreover, as content of the white pigment in the thermoplastic resin layer 5, it is preferable that 10 mass% or more and 20 mass% or less are mix | blended, and it is more preferable that it is 13 mass% or more and 17 mass% or less. Thereby, the thermoplastic resin layer 5 can sufficiently reflect the laser light, and the deterioration of the strength of the resin film due to the addition of the white pigment is low, and the hinge sheet 1 has sufficient durability.

  The average thickness of the thermoplastic resin layer 5 containing the white pigment is preferably 5 μm or more and 200 μm or less, more preferably 15 μm or more and 100 μm or less, and particularly preferably 30 μm or more and 50 μm or less. Thereby, the interface between the fiber sheet and the pair of resin films can be made difficult to be recognized. Further, the hinge sheet 1 does not become too thick.

  As described above, the thermoplastic resin layer 5 containing a white pigment may have voids around the white pigment. Thus, by having a void around the white pigment, the uniform dispersibility of the white pigment in the thermoplastic resin layer 5 is improved, and the productivity, durability, weather resistance, strength, etc. of the thermoplastic resin layer 5 are improved. These characteristics can be improved.

The apparent density of the thermoplastic resin layer 5 by the inclusion of such voids, preferably 0.99 g / cm ³ or more 1.37 g / cm ³ or less, particularly preferably 1.18 g / cm ³ or more 1.33 g / cm ³ or less . If the apparent density of the thermoplastic resin layer 5 is smaller than the lower limit, the volume of voids around the white pigment increases, and the productivity and strength characteristics of the thermoplastic resin layer 5 may be reduced. On the other hand, when the apparent density of the thermoplastic resin layer 5 exceeds the above upper limit, the volume of voids around the white pigment is reduced, and the effects of improving the durability, strength, and the like may be reduced.

  In addition to the white pigment, the thermoplastic resin layer 5 may be formed with various additives for the purpose of improving and modifying processability, heat resistance, weather resistance, mechanical properties, dimensional stability, and the like. Etc. can be mixed. Examples of the additive include a lubricant, a crosslinking agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a filler, a reinforcing fiber, a reinforcing agent, an antistatic agent, a flame retardant, a flame retardant, a foaming agent, and an antifungal agent. , Fillers, pigments other than white pigments, plasticizers, deterioration inhibitors, dispersants and the like.

(Crimping process)
The crimping step is a step of obtaining the secondary laminate sheet 1B by pressing the white fiber sheet 7 between the pair of primary laminate sheets 1A as described above. Here, in the crimping step, the pair of primary laminated sheets 1A have the same configuration, and specifically, each thermoplastic resin layer 5 of the pair of primary laminated sheets 1A contains a white pigment. ing.

  As long as the fiber sheet 7 includes fibers and can be formed into a sheet shape, various types can be adopted. For example, the fiber sheet 7 can be composed of a mesh cloth knitted in a mesh shape, It is preferable to comprise from the nonwoven fabric formed in the sheet form, without woven fiber. Thereby, while being excellent in workability, it becomes possible to give the hinge sheet 1 manufactured sufficient intensity | strength.

  In addition, as the fiber of the fiber sheet 7, a synthetic resin made of urethane resin that is the same polymer as the main component of the thermoplastic resin layer 5 is used. The fineness and fiber length of this fiber are not particularly limited, but those having a fineness of 0.55 dtex to 3.3 dtex and a fiber length of 20 mm to 51 mm are preferably used. As a method for producing the nonwoven fabric, a general method such as a hydroentanglement (spun lace) method, a thermal bond method, a chemical bond method, or the like can be employed.

  The refractive index of the fiber sheet 7 is preferably within ± 0.1 with respect to the refractive index of the thermoplastic resin layer 5, and more preferably within ± 0.05. When the difference between the refractive index of the fiber sheet 7 and the refractive index of the thermoplastic resin layer 5 exceeds the above range, the reflection of light at the interface between the fiber sheet 7 and the thermoplastic resin layer 5 increases, and the visibility of the interface is increased. May be improved and interface integrity may be reduced.

  Further, as the white fiber sheet 7, in addition to a method in which the fiber itself is white, the fiber sheet 7 may be colored with a white paint. It is also possible to use a material coated with a paint or a material obtained by impregnating a fiber sheet 7 with a white paint.

  The fiber sheet 7 is preferably formed to have an average thickness of 25 μm to 60 μm, preferably 30 μm to 50 μm. Thereby, it is possible to make it difficult to recognize the interface between the fiber sheet and the pair of resin films while giving the hinge sheet a certain tensile strength, tear strength, handleability, and the like.

  In the crimping step, a thermocompression bonding apparatus having a heating means and a pair of sandwiching rolls is used. Specifically, a thermocompression bonding apparatus having a pair of heating rolls 10 (sandwiching rolls) is used (see FIG. 2). In addition, as the heating roll 10 of this thermocompression bonding apparatus, various things are employable, for example, a metal roll and a silicon roll can be used.

  The thermocompression bonding temperature in the pressure bonding step is preferably 80 ° C. or higher and 200 ° C. or lower, more preferably 90 ° C. or higher and 180 ° C. or lower, and particularly preferably 100 ° C. or higher and 170 ° C. or lower. If the pressure bonding temperature is less than the above lower limit value, the adhesive strength between the thermoplastic resin layer 5 and the fiber sheet 7 may be insufficient, or a part of the thermoplastic resin layer 5 may be present in the gap between the fibers of the fiber sheet 7. May not enter. Moreover, when the crimping temperature exceeds the above upper limit, the fibers of the fiber sheet 7 may be thermally deteriorated.

  Moreover, it is preferable that the crimping | compression-bonding pressure of the thermocompression bonding in a crimping | compression-bonding process is 0.1 Mpa or more, More preferably, it is 0.3 Mpa or more, Most preferably, it is 0.5 Mpa or more. If the pressing pressure is less than the lower limit, the adhesive strength between the thermoplastic resin layer 5 and the fiber sheet 7 may be insufficient, or a part of the thermoplastic resin layer 5 may be present in the gap between the fibers of the fiber sheet 7. May not enter. Moreover, the upper limit of the pressure bonding pressure of thermocompression bonding is not particularly limited, but is preferably 10 Mpa or less, more preferably 5 MPa or less, and particularly preferably 1 Mpa or less. When the crimping pressure exceeds the above upper limit, there is a concern that the performance of the fiber sheet 7 may deteriorate, and the production line may be complicated due to pressure application.

  Furthermore, the thermocompression bonding speed of thermocompression bonding in the compression bonding process is preferably 0.5 m / min or more and 30 m / min or less, more preferably 1 m / min or more and 20 mm / min or less. If the crimping speed is less than the above lower limit value, the fiber sheet 7 may be deteriorated in performance and may be unsuitable for mass production. Moreover, when the crimping speed exceeds the upper limit, the adhesive strength between the thermoplastic resin layer 5 and the fiber sheet 7 may be insufficient, or the thermoplastic resin layer 5 may be placed in the gap between the fibers of the fiber sheet 7. There is a risk that the part will not enter.

(Peeling process)
A peeling process is a process of peeling each base material 3 of an outer surface from the secondary lamination sheet 1B after a press bonding process as mentioned above. Here, it is preferable that peeling of this base material 3 is provided so that it may peel from the substantially identical location of the front and back of the said secondary laminated sheet 1B. Specifically, as shown in FIG. 2, it is preferable that the peeling guide rolls 11 are disposed at substantially the same location upstream and downstream. Thereby, the base material 3 can be peeled from the front and back surfaces with a good balance.

(Hinge sheet 1)
The hinge sheet 1 formed by the manufacturing method has a structure including a pair of thermoplastic resin layers 5 and a fiber sheet 7 disposed between the pair of thermoplastic resin layers 5. The pair of thermoplastic resin layers 5 are mainly composed of a urethane resin, and the fiber sheet 7 is formed of synthetic fibers made of urethane resin. In addition, as shown in FIG. 3A, the hinge sheet 1 has a part of the thermoplastic resin layer 5 in the gap between the fibers 7 a of the fiber sheet 7.

  The hinge sheet 1 is preferably formed to have an average thickness of 50 μm to 300 μm, preferably 80 μm to 200 μm, and more preferably 110 μm to 130 μm. Thereby, it is possible to make it difficult to recognize the interface between the fiber sheet and the pair of resin films while giving the hinge sheet a certain tensile strength, tear strength, handleability, and the like.

(Electronic passport sheet 40)
Next, as a wireless information holding sheet body according to an embodiment of the present invention, an electronic passport sheet body 40 using the hinge sheet 1 having the above-described configuration will be described with reference to FIG.

  The electronic passport sheet 40 includes the hinge sheet 1 and a wireless communication layer 20 that is stacked on one surface of the hinge sheet 1 (sometimes referred to as a surface in the following description) and incorporates an antenna (not shown). The printing layer 30 is provided on one side of the wireless communication layer 20. Further, in the electronic passport sheet 40, the other surface of the hinge sheet 1 (also referred to as a back surface in the following description) has substantially the same configuration as the front surface. Specifically, another radio communication layer 20 containing an antenna (not shown) is laminated on the back side of the hinge sheet 1, and another print layer 30 is laminated on the other surface side of the radio communication layer 20. ing. That is, in the electronic passport sheet body 40 of the present embodiment, the wireless communication layer 20 and the print layer 30 are formed on both surfaces of the hinge sheet 1, respectively. In the electronic passport sheet 40, the hinge sheet 1 has a protruding portion 1a that protrudes from one side in the plane direction with respect to the other layers (the wireless communication layer 20 and the printing layer 30). .

  The front and back wireless communication layers 20 have an IC chip built-in layer 21 containing an IC chip (not shown) and an antenna built-in layer 23 containing the antenna. The IC chip is electrically connected to an antenna, and is configured to be able to wirelessly communicate information held by the IC chip via the antenna. It is also possible to adopt a configuration in which only one of the front and back wireless communication layers has an IC chip built-in layer, and the other wireless communication phase has only an antenna built-in layer and no IC chip built-in layer.

  The IC chip built in the IC chip built-in layer 21 is an integrated circuit including a semiconductor element, and is provided so that various data can be stored. The IC chip has an electrode portion (not shown), and this electrode portion is disposed so as to be electrically connected to the contact portion of the antenna.

  The IC chip is surrounded by a resin forming the IC chip built-in layer 21. Various resins can be adopted as the resin for forming the IC chip built-in layer 21. However, an amorphous polyeleterene terephthalate copolymer (hereinafter sometimes referred to as PETG) can be preferably used. Here, the IC chip built-in layer 21 is preferably provided with an average thickness of 150 μm to 350 μm, and more preferably 200 μm to 300 μm.

  The antenna built-in layer 23 includes an antenna circuit film (not shown) on which an antenna is formed and a base film (not shown) on which the antenna circuit film is laminated. The antenna built-in layer 23 is preferably provided with an average thickness of 90 μm to 200 μm, and more preferably 100 μm to 150 μm.

  Although the raw material of the said base film is not specifically limited, For example, it is possible to employ | adopt a polycarbonate. Moreover, it is preferable that the average thickness of this base film is provided in 30 micrometers or more and 200 micrometers or less, More preferably, they are 50 micrometers or more and 100 micrometers or less.

  The antenna circuit film is formed by forming an antenna on a resin film. Here, various known methods can be adopted as the antenna forming method, and for example, the antenna can be formed by printing or the like. It is. Moreover, the material of the resin film which comprises this antenna circuit film is not specifically limited, For example, PETG can be employ | adopted. The average thickness of the resin film is preferably 30 μm or more and 200 μm or less, and more preferably 50 μm or more and 100 μm or less.

  The front and back print layers 30 have a laser print layer 35 printed by laser light irradiation and an image receiving layer 31 on which an image such as a photograph is printed. Specifically, the image receiving layer 31 is laminated on the outer surface of the wireless communication layer 20, and the laser printing layer 35 is laminated on the outer surface of the image receiving layer 31 via an adhesive layer 33.

  The image receiving layer 31 is a layer for forming various information as an image by an inkjet method, a thermal transfer method, an electrophotographic method, or the like. The image receiving layer 31 enables image formation by receiving, diffusing, closely adhering, fixing, etc. the image recording ink. Examples of the method for applying the image recording ink to the ink jet method include methods described in Japanese Patent Application Laid-Open Nos. 2000-44857 and 9-71743. Examples of a method for applying the image recording ink to the thermal transfer method include a sublimation thermal transfer method and a melt thermal transfer method.

  The material for forming the image receiving layer 31 is not particularly limited, and is a polyvinyl chloride resin, a copolymer resin of vinyl chloride and other monomers (for example, isobutyl ether, vinyl propionate, etc.), a polyester resin, a poly (Meth) acrylic acid ester, polyvinyl pyrrolidone, polyvinyl acetal resin, polyvinyl butyral resin, polyvinyl alcohol, polycarbonate, cellulose triacetate, polystyrene, styrene and other monomers (for example, acrylic acid ester, acrylonitrile, ethylene chloride, etc.) Examples include copolymers, vinyl toluene acrylate resins, polyurethane resins, polyamide resins, urea resins, epoxy resins, phenoxy resins, polycaprolactone resins, polyacrylonitrile resins, and modified products thereof. That.

  Various fillers can be added to the image receiving layer 31 in terms of blocking and tack prevention. Examples of such filler include fluorine-based particles, melamine resin particles, silicon-based particles, talc, kaolin, magnesium carbonate, potassium carbonate, titanium oxide, silica, starch and the like. In addition, various additives such as a film forming aid, a coating solution stabilizer, a leveling agent, and an antifoaming agent may be added to the image receiving layer 31.

  The image receiving layer 31 preferably has an average thickness of 4 μm to 8 μm, more preferably 5 μm to 7 μm.

  The laser printing layer 35 has a light shielding ink layer (not shown) and a background ink layer (not shown) formed so as to at least conceal the area of the light shielding ink layer to be laser printed. Here, the background ink layer formation region (in the plane direction) is provided slightly wider than the light-shielding ink layer formation region, and is configured to conceal the light-shielding ink layer.

  In the formation of the light-shielding ink layer, a printing ink containing metal particles that emit laser light can be used. Specifically, for example, 5 weights of aluminum particles having an average particle diameter of 5 μm to 20 μm with respect to the weight of the ink. A silver ink in which an aluminum paste is dispersed in a medium so as to be not less than 20% and not more than 20% by weight can be used.

  In forming the background ink layer, a printing ink containing a pigment can be used. Specifically, for example, the background ink layer is preferably formed using a white ink containing a white pigment. Since the color of the print pattern to be laser printed is black, the contrast of the print pattern is increased. Various white inks can be used as the white ink, but a white pigment such as titanium oxide is preferably used.

  The laser printing layer 35 is formed by printing a light-shielding ink layer on the base layer of the laser printing layer 35 by a printing method such as gravure printing, letterpress printing, or screen printing, and then overprinting a background ink layer on the light-shielding ink layer. Can be formed.

  The laser printing layer 35 is preferably provided with an average thickness of 50 μm to 150 μm, and more preferably 70 μm to 110 μm.

  The laser print layer 35 and the image receiving layer 31 are bonded via an adhesive layer 33. The type of the adhesive is not particularly limited, and various adhesives can be employed. Moreover, it is preferable that the average thickness of the adhesive bond layer 33 is 4 micrometers or more and 8 micrometers or less, More preferably, they are 5 micrometers or more and 7 micrometers or less.

  The electronic passport sheet body 40 having the above configuration is preferably provided with an average thickness of 1 mm or less, more preferably 900 μm or less, and further preferably 800 μm or less.

(Electronic passport 50)
Next, as one embodiment of the wireless information holding booklet of the present invention, an electronic passport 50 using the wireless information holding sheet body 40 having the above-described configuration will be described with reference to FIG.

  The electronic passport 50 is a booklet having the electronic passport sheet 40, and the electronic passport sheet 40 is joined to the inside of the folded portion of the back portion of the booklet 51. Here, in the electronic passport sheet 40, the free end of the protruding portion 1a of the hinge sheet 1 is joined, and the thermoplastic resin layer 5 of the hinge sheet 1 is joined to the booklet 51 by thermal welding.

(advantage)
The hinge sheet 1 has a relatively high tensile strength and tear strength by including the fiber sheet 7. In particular, since the thermoplastic resin layer 5 and the fiber sheet 7 are mainly composed of the same polymer, the adhesiveness between the thermoplastic resin layer 5 and the fiber sheet 7 is excellent, and the thermoplastic resin layer 5 and the fiber sheet 7 are excellent. 7 is easily integrated with the interface. For this reason, this interface is difficult to recognize and the hinge sheet 1 is easily visually recognized as a single layer material. Moreover, since the thermoplastic resin layer 5 and the fiber sheet 7 are excellent in adhesion as described above, it is difficult to peel off at the interface between the thermoplastic resin layer 5 and the fiber sheet 7. Furthermore, even if it peels off at this interface, the other part tends to remain following one of the thermoplastic resin layer 5 and the fiber sheet 7, and the remaining part remains defective even if it is repaired by heating or the like thereafter. It is easy to be recognized as having high restoration difficulty. For this reason, even if it tries to falsify the radio | wireless information holding sheet | seat using the said hinge sheet | seat 1 by peeling etc. in the said hinge sheet | seat part, since the said hinge sheet | seat 1 cannot be restored | restored, it has a falsification prevention effect as a result. In particular, in the hinge sheet 1, since a part of the thermoplastic resin layer 5 enters the gap between the fibers 7 a of the fiber sheet 7, the interface between the thermoplastic resin layer 5 and the fiber sheet 7 is more integrated. The Further, the difference in refractive index between the thermoplastic resin layer 5 and the fiber sheet 7 is 0.1 or less, so that the interface recognizability is further reduced.

  Moreover, since the main component of the thermoplastic resin layer 5 of the hinge sheet 1 is a urethane resin, the wear resistance and flexibility of the thermoplastic resin layer 5 are improved, and the strength of the hinge sheet 1 is increased.

  Furthermore, the hinge sheet 1 has a surface when the thermoplastic resin layer 5 contains a colorant, and the fiber sheet 7 has the same color as the colorant, so that the laser print layer is laminated on the front and back surfaces. When the laser printing layer on the surface side is printed by irradiating the laser beam from the side, the laser beam from the surface side is shielded by the thermoplastic resin layer 5 containing the colorant and the fiber sheet 7 colored in the same color. Therefore, it is possible to prevent printing defects on the laser print layer on the back side. Similarly, even if the laser printing layer on the back surface side is printed by irradiating the laser beam from the back surface side, printing failure of the laser printing layer on the front surface side can be prevented. Moreover, when the thermoplastic resin layer 5 and the fiber sheet 7 are colored in the same color, the interface between these layers and the sheet can be further prevented from being recognized. Moreover, since the thermoplastic resin layer 5 and the fiber sheet 7 are white, the hinge sheet 1 is less likely to cause burn unevenness or the like in the hinge sheet 1 itself as compared with the case where the hinge sheet 1 exhibits other colors. That is, in the hinge sheet 1, the thermoplastic resin layer 5 or the like can be a color with relatively low brightness (for example, black), but in that case, the incident laser light is absorbed, There is a possibility that the hinge sheet 1 may be discolored by the laser light. For this reason, the provision of white as described above has an advantage that the laser light is accurately reflected and is not easily discolored.

  Moreover, the manufacturing method of the said hinge sheet | seat 1 can form the primary laminated sheet 1A previously, and can form the secondary laminated sheet 1B using this primary laminated sheet 1A, ie, the thermoplastic resin composition on one surface of the base material 3 Since the thermoplastic resin layer 5 (primary laminated sheet 1A) is formed in advance by laminating the objects, and this thermoplastic resin layer 5 can be laminated and bonded to the fiber sheet 7 by thermocompression bonding, the fiber sheet 7 and Adhesion with the thermoplastic resin layer 5 can be performed at a low temperature as compared with the conventional one. Thereby, in the said hinge sheet | seat 1, compared with the conventional hinge sheet | seat 1, the thermal deterioration of the fiber of the fiber sheet | seat 7 is reduced, and sufficient tensile strength can be obtained.

[Second Embodiment]
Next, an electronic passport sheet 40 shown in FIG. 6 will be described as a wireless information holding sheet according to the second embodiment of the present invention. The hinge sheet 1 of the first embodiment is also used in the electronic passport sheet body 40 of the second embodiment. Moreover, about the part which has the same structure as 1st embodiment, the same code | symbol is used and the detailed description may be abbreviate | omitted.

  Similarly to the first embodiment, the electronic passport sheet body 40 of the second embodiment is laminated on one surface of the hinge sheet 1 and incorporates an antenna, and one surface of the wireless communication layer 20. The hinge sheet 1 includes a protruding portion 1a that protrudes in a planar direction relative to the other layers. The electronic passport sheet body 40 according to the second embodiment is separated from the wireless communication layer 20 and is laminated on one surface of the hinge sheet 1 in the vicinity of the protruding end portion of the protruding portion 1a of the hinge sheet 1. Another wireless communication layer 20 incorporated therein and another print layer 30 stacked on one surface side of the other wireless communication layer 20 are provided. In other words, in the electronic passport sheet body 40 of the second embodiment, a pair of wireless communication layers 20 are laminated on one surface of the hinge sheet 1 so as to be separated from each other, and on one surface of each wireless communication layer 20. A print layer 30 is laminated.

  Next, an electronic passport using the electronic passport sheet 40 of the second embodiment will be described with reference to FIG. 7 as a second embodiment of the wireless communication information holding booklet of the present invention. In addition, about the part which has the same structure as 1st embodiment, the same code | symbol is used and the detailed description may be abbreviate | omitted.

  Similarly to the first embodiment, the electronic passport 50 of the second embodiment includes the electronic passport sheet body 40 of the first embodiment joined to the inside of the folded portion of the back portion of the booklet, and the above-described first embodiment. It has the electronic passport sheet 40 of the second embodiment. The electronic passport sheet 40 according to the second embodiment is disposed on the outer side of the cover of the booklet (front cover and back cover), and one surface side is the inner side (the printing layer 30 is the inner side). In this state, it is attached to the cover of the booklet.

  According to the electronic passport 50 of the second embodiment, not only the wireless communication layer 20 of the electronic passport sheet 40 of the first embodiment but also the electronic passport of the second embodiment disposed on the cover of the booklet. Since information can be held also by the wireless communication layer 20 of the sheet body 40, more information can be held.

[Other Embodiments]
In addition, although each above-mentioned embodiment had the said advantage by the said structure, this invention is not limited to the structure of each said embodiment, A design change is possible suitably within the range which this invention intends. It is.

  That is, the wireless communication information holding sheet body of the present invention has a plurality of wireless communication layers 20, but the present invention is not limited to this, and has at least one wireless communication layer. Within the intended scope of the present invention.

  Further, even when the wireless communication layer 20 is provided on each of the front and back surfaces of the hinge sheet 1, the configuration is not limited to the configuration of the first embodiment, and for example, wireless communication information as shown in FIG. Making the holding sheet body is also a matter that can be appropriately changed in design. In the wireless communication information holding sheet body shown in FIG. 8, a wireless communication layer 20 composed of a single layer of an antenna built-in layer 23 is laminated on the surface of the hinge sheet 1, and a surface of the wireless communication layer 20 is covered with a layer of a laser printing layer 35. A print layer 30 is laminated. In addition, the wireless communication information holding sheet body has a wireless communication layer 20 composed of one antenna holding layer on the back surface of the hinge sheet 1 and a printing layer 30 on the back surface of the wireless communication layer 20. The layer 30 includes a laser printing layer 35 laminated on the back surface of the wireless communication layer 20 and an image receiving layer 31 laminated on the back surface of the laser printing layer 35.

  Furthermore, in the said embodiment, although the thermoplastic resin layer 5 of the front and back of the hinge sheet 1 demonstrated the thing of the same structure, this invention is not limited to this, The structure from which the thermoplastic resin layer of front and back differs Even those having (for example, material, thickness, etc.) are within the intended scope of the present invention.

  In the above embodiment, the thermoplastic resin layer 5 of the hinge sheet 1 contains a colorant, and the fiber sheet 7 has the same color as this colorant. However, the present invention is limited to this. However, the configuration in which the thermoplastic resin layer 5 does not have a colorant and the fiber sheet 7 is not colored is also within the intended range of the present invention. However, when the thermoplastic resin layer 5 has a colorant, the fiber sheet 7 is uncolored or colored in a color different from the colorant, or the thermoplastic resin layer 5 has a colorant. If not, the structure in which the fiber sheet 7 is colored is not preferable because the interface between the thermoplastic resin layer 5 and the fiber sheet 7 is easily recognized and the effects of the present invention may not be exhibited.

  Further, the main polymer of the thermoplastic resin layer 5 and the fiber sheet 7 of the hinge sheet 1 is not limited to the urethane resin, and for example, an olefin resin or the like can be used.

  Moreover, the hinge sheet | seat 1 may have the space | gap 7b into which the said resin film does not enter into the clearance gap between the fibers 7a of the fiber sheet 7 as shown in FIG.3 (b).

  Further, in the laminated sheet body for wireless communication, the antenna built-in layer has a laser light reflecting layer that reflects the laser light on the outer surface side of the antenna (in the case of the antenna built-in layer on the front surface side, the antenna surface side) Furthermore, what is provided is also employable.

  In addition, the hinge sheet 1 of the present invention is preferably used for an electronic passport, but the application is not limited to this. For example, the hinge sheet 1 is also used for other sheet bodies for holding wireless communication information. It is possible.

  As described above, the hinge sheet of the present invention has a relatively high tensile strength and tear strength, and has high anti-counterfeiting properties because it is difficult to restore the original state when damaged, and an electronic passport. It can use suitably for etc.

DESCRIPTION OF SYMBOLS 1 Hinge sheet 1A Primary laminated sheet 1B Secondary laminated sheet 3 Base material 5 Thermoplastic resin layer 7 Fiber sheet 7a Fiber 7b Air gap 10 Heating roll 11 Peeling guide roll 20 Wireless communication layer 21 IC chip built-in layer 23 Antenna layer 30 Print layer 31 Image-Receiving Layer 33 Adhesive Layer 35 Laser Printing Layer 40 Electronic Passport Sheet 50 Electronic Passport 51 Booklet

Claims (13)

A pair of resin films;
A fiber sheet disposed between the pair of resin films,
A hinge sheet comprising the same polymer as a main component of the resin film and the fibers of the fiber sheet.   The hinge sheet according to claim 1, wherein a difference in refractive index between the resin film and the fiber sheet is 0.1 or less.   The hinge sheet according to claim 1 or 2, wherein a main component of the resin film and the fiber sheet is a urethane resin.   The hinge sheet according to claim 1, 2 or 3, wherein a part of the resin film enters a gap between fibers of the fiber sheet.   The hinge sheet according to claim 1, claim 2, or claim 3, wherein the fiber sheet has a gap that does not allow the resin film to enter.   The hinge sheet according to any one of claims 1 to 5, wherein the average thickness is 50 µm or more and 300 µm or less.   The hinge sheet according to any one of claims 1 to 6, wherein the pair of resin films contain a colorant, and the fiber sheet has the same color as the colorant. The hinge sheet according to any one of claims 1 to 7,
Laminated on one side of this hinge sheet, a wireless communication layer containing an antenna,
A laser printing layer laminated on one side of the wireless communication layer,
A wireless communication information holding sheet body, wherein the hinge sheet has a projecting portion projecting in a planar direction from the other layers. A wireless communication layer that is stacked on the other surface of the hinge sheet and incorporates an antenna;
The wireless communication information holding sheet according to claim 8, further comprising: a laser printing layer laminated on the other surface side of the wireless communication layer. In the vicinity of the protruding end of the protruding portion of the hinge sheet,
Other wireless communication layers that are separated from the wireless communication layer and are laminated on one surface of the hinge sheet and incorporate an antenna;
The wireless communication information holding sheet body according to claim 8, further comprising: another laser printing layer laminated on one surface side of the other wireless communication layer.   The wireless communication information holding sheet body according to claim 8, 9 or 10, wherein the wireless communication layer includes an antenna and an IC chip connected to the antenna.   The wireless communication information holding booklet which has the laminated sheet body for wireless communication according to any one of claims 8 to 11. Lamination process using a substrate having releasability on one surface, laminating a thermoplastic resin composition on one surface of this substrate, and obtaining a primary laminate sheet having a substrate and a thermoplastic resin composition layer;
Using the pair of primary laminated sheets and the fiber sheet, thermocompression bonding in a state where the thermoplastic resin composition layers of the pair of primary laminated sheets are opposed to each other and the fiber sheet is disposed between the pair of primary laminated sheets, A crimping step for obtaining a secondary laminated sheet,
A method for producing a hinge sheet, wherein the thermoplastic resin composition layer and the fibers of the fiber sheet are mainly composed of the same polymer.

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