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WO2013118283A1 - Feuille d'articulation composite, feuille multicouche à marquage au laser pour un passeport électronique et passeport électronique - Google Patents

Feuille d'articulation composite, feuille multicouche à marquage au laser pour un passeport électronique et passeport électronique Download PDF

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Publication number
WO2013118283A1
WO2013118283A1 PCT/JP2012/053023 JP2012053023W WO2013118283A1 WO 2013118283 A1 WO2013118283 A1 WO 2013118283A1 JP 2012053023 W JP2012053023 W JP 2012053023W WO 2013118283 A1 WO2013118283 A1 WO 2013118283A1
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WO
WIPO (PCT)
Prior art keywords
sheet
layer
core
transparent
yarn
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/053023
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English (en)
Japanese (ja)
Inventor
俊規 阪上
渡邉　崇志
裕樹 末石
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Coloring Co Ltd
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Japan Coloring Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Coloring Co Ltd filed Critical Japan Coloring Co Ltd
Priority to JP2012524436A priority Critical patent/JP5173085B1/ja
Priority to PCT/JP2012/053023 priority patent/WO2013118283A1/fr
Publication of WO2013118283A1 publication Critical patent/WO2013118283A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D13/00—Loose leaves modified for binding; Inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/507—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/59—Polyamides; Polyimides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2425/00—Cards, e.g. identity cards, credit cards

Definitions

  • the present invention relates to a highly functional composite hinge sheet, a laser marking multilayer sheet for electronic passports using the composite hinge sheet, and an electronic passport using the laser marking multilayer sheet for electronic passports.
  • the passport plays a role as a so-called identification card (identity certificate, etc.) issued by a country that is a public organization and has reliability.
  • this electronic passport can identify and prove an individual. Therefore, if a third party other than the country (or the agency acting in the country) can easily tamper or forge personal information, the reliability of the identification card is lowered. In addition, the progress of international exchange and the movement of human resources on a global scale may be hindered.
  • hinge sheet often attaches data that can identify an individual to the electronic passport body, and therefore, the hinge sheet is required to have durability that is difficult to damage.
  • the hinge sheet or the like be provided with durability so as to prevent damage such as tearing of the hinge sheet or the like from the electronic passport body.
  • durability By providing such durability, falsification and counterfeiting, such as a third party excluding the public organization that is the issuer intentionally (intentionally) replacing the hinge sheet, etc. Can be surely prevented. Therefore, immediate response is required.
  • Patent Document 1 aims to obtain a multilayer sheet that can be laser-marked with no appearance damage, good contrast, and excellent surface smoothness.
  • a multilayer sheet consisting of at least a surface layer and an inner layer, (A) a surface layer made of a transparent thermoplastic resin, and (B) (b-1) 100 parts by weight of the thermoplastic resin, (B-2) Melting an inner layer made of a thermoplastic resin composition containing 0.01 to 5 parts by weight of an energy absorber that absorbs a laser beam and (b-3) 0.5 to 7 parts by weight of a colorant
  • a multilayer sheet for laser marking formed by coextrusion is disclosed.
  • Patent Document 2 aims to obtain a multi-layer sheet that is not damaged in appearance, has good contrast, can perform laser marking with excellent surface smoothness, and has excellent heat resistance.
  • This Patent Document 2 is a multilayer sheet comprising a first surface layer / inner layer / second surface layer, and (A) at least one selected from mica and carbon black with respect to 100 parts by weight of a transparent thermoplastic resin.
  • Energy absorbing agent 0 that absorbs a laser beam with respect to 100 parts by weight of the transparent first and second surface layers made of a thermoplastic resin composition containing 0.001 to 5 parts by weight of (B) and thermoplastic resin.
  • a multilayer sheet formed from an inner layer made of a thermoplastic resin composition containing 0.001 to 3 parts by weight is disclosed.
  • the thickness composition ratio of the first surface layer / inner layer / second surface layer is 1: 4: 1 to 1: 10: 1, and the first surface layer / inner layer / second surface layer. Is formed as a multilayer sheet for laser marking formed by melt coextrusion.
  • Patent Documents 3 to 10 in which the hinge sheet is disclosed as a sheet for binding information pages to other pages and the like.
  • Patent Document 3 discloses a technique for binding with a binding margin when a printed sheet or the like is bound. Further, in Patent Document 4, when binding an information page composed of a transparent layer / colored layer / transparent layer, the transparent layer which is both outer layers of the transparent layer / colored layer / transparent layer is projected and narrowed down. Has been disclosed. Patent Document 5 discloses a technique in which the face film and the back film are narrowed down and the narrowed portion is used as a binding margin.
  • Patent Document 6 discloses a technique for binding an information page made of a cover foil that wraps a plastic inlay made of a plastic sheet together with other pages. Further, Patent Document 7 discloses a technique for binding several sheets of paper to a cover.
  • Patent Documents 8 and 9 disclose a technique for providing a sheet for binding at the center of the laminate, that is, a hinge sheet. Furthermore, in patent document 10, the technique which concerns on the composite hinge sheet
  • JP 2002-273732 A Japanese Patent No. 3889431 Japanese Patent Laid-Open No. 09-123636 International Publication No. 98/19870 Pamphlet Japanese Patent Laid-Open No. 2001-213072 US Pat. No. 5,035,503 A JP 2000-203174 A EP 1592565B1 specification European Patent No. 1502765B1 Japanese Patent No. 4456175
  • the multilayer sheets for laser marking in Patent Documents 1 and 2 are excellent in heat-fusibility between these multilayer sheets and, for example, thermoplastic resin sheets such as PETG sheets and ABS resin sheets. Furthermore, sufficient printability for printing letters and numbers can be obtained by laser marking by laser light energy irradiation.
  • the inner layer contains 0.5 to 7 parts by weight of a colorant.
  • a so-called ID such as a passport in which personal information is recorded as described above
  • printing is generally performed on an inlay layer that is an intermediate layer.
  • the transparency is not sufficient due to the influence of the coloring agent. Therefore, there has been a problem that the image clarity of the printed portion is hindered.
  • the surface layer also contains at least one selected from mica and carbon black, which are laser light absorbers. Therefore, when the multilayer sheet is used for the outermost layer (overlay) of the identification card, the laser light energy absorbent contained in the surface layer absorbs the laser light energy by laser light energy irradiation, and the phenomenon such as foaming is caused. Arise. As a result, there has been a problem that the smoothness of the surface is lowered.
  • Patent Document 3 does not disclose a technique for binding the laminate together with other sheets.
  • the thickness of the laminated body which consists of a structure of a transparent layer / colored layer / transparent layer differs from the thickness of a binding margin part. Therefore, it is difficult to stably produce such a laminate in a large amount.
  • patent document 5 there exists a problem similar to the above in the manufacturing method also about this technique, and it is difficult to produce such a laminated body stably in large quantities.
  • Patent Document 6 since a plurality of cover foils are projected from the information page portion to form a narrowed binding portion, there are the same problems as described above. Moreover, in patent document 7, several paper sheets are attached to a cover with a synthetic resin band. For this reason, there is a problem that the binding portion becomes thick and opens when bookbinding, and the technique of Patent Document 7 is not suitable for a large amount of bookbinding such as a passport.
  • the hinge sheet is only partially inserted into the central portion of the laminate.
  • a thickness difference occurs between the portion where the hinge sheet is inserted and the portion where the hinge sheet is not inserted. That is, the portion where the hinge sheet is inserted is raised more than the portion where the hinge sheet is not inserted.
  • the bound passport may open unintentionally, or it may become a fan shape when a plurality of bound passports are set up. As a result, when the passports are sent one by one to the next printing process, they cannot be sent as they are, and stable production cannot be performed.
  • Patent Document 8 has a layer structure, and as a sheet material for the joint portion, the surface layer is formed of PE, and the core layer is formed of PET.
  • the sheet material of the information page is described as PC. For this reason, since the PC sheet and the surface layer formed from the PE at the joint are not heat-bonded, some kind of adhesive is required for the bonding.
  • Patent Document 8 does not particularly describe this, and describes that it is bonded to a cover or the like using a high-temperature active adhesive. Therefore, in the technique of Patent Document 8, a method of applying some adhesive to both surfaces of the sheet material of the joint portion in advance is necessary, and the production process becomes complicated. Furthermore, there is no description about the adhesive strength of this part, and it is unclear as a disclosed technique.
  • Patent Document 9 discloses a technique in which a flexible layer having an opening is inserted over the entire central portion of the laminate or partially. Furthermore, a technique for providing a flexible layer on the outermost layer of the laminate is disclosed. However, as described above, the above-mentioned problems are included in the technique of partial insertion of the flexible layer and the technology provided in the outermost layer of the laminate of the flexible layer.
  • Patent Document 9 describes that a technique for providing a flexible layer having an opening on the entire surface of the central portion of the laminate uses a woven fabric as the flexible layer having an opening.
  • a woven fabric as the flexible layer having an opening.
  • Patent Document 9 discloses a technique for a flexible layer having an opening, which is a technique for a binding portion, but hardly discloses a technique for a laminate.
  • Patent Document 10 aims to solve the problems of Patent Documents 1 to 9.
  • Patent Document 10 proposes a laser marking multilayer laminate for electronic passports and a composite hinge sheet that can be suitably used for electronic passports.
  • This composite hinge sheet is composed of a woven sheet having a large number of openings composed of yarns having a circular cross section, and a hinge sheet integrated with a thermoplastic resin layer formed on both sides of the woven sheet. is there.
  • various properties such as repeated bending resistance and heat-fusibility are improved.
  • the hinge portion of the electronic passport has excellent tearability, flexibility, bending resistance, and the like.
  • the woven sheet is composed of a thread having a circular cross section. Therefore, there remains room for improvement in terms of tear resistance and the like. In particular, since measures against falsification and counterfeiting are important for electronic passports, further improvements in tear resistance and the like are desired.
  • Patent Documents 1 to 10 As described above, none of the above-mentioned Patent Documents 1 to 10 has reached a sufficient solution, and an early improvement is required.
  • the composite hinge sheet according to the present invention has been made for the purpose of solving the above-mentioned problems and for further improvement, and has tear resistance, fracture resistance, flexibility, bending resistance, durability, and heat fusion resistance.
  • a composite hinge sheet excellent in workability and dimensional accuracy is provided.
  • the present invention provides a composite hinge sheet in which resin is integrated into the opening.
  • the present invention can be suitably used for a laser marking multilayer sheet for an electronic passport having a multilayer structure.
  • the laser marking multilayer sheet for electronic passports is a multilayer sheet excellent in laser marking properties, such as marking on a transparent laser marking sheet without damage by laser light energy irradiation.
  • the present invention provides a high contrast between the fabric color of the laser marking sheet and the laser-marked printed portion, and can provide clear characters, symbols, designs, images, etc., and heat-fusibility in the multilayer sheet laminating process.
  • the present invention uses a highly transparent resin to improve transparency from the standpoint of total light transmittance, sheet transportability, releasability from a mold after hot pressing, heat resistance, We provide laser marking multilayer sheets for electronic passports that have both bendability, wear resistance, and productivity.
  • the hinge portion becomes an electronic passport having excellent tear strength and tensile strength.
  • the hinge portion since the hinge portion is formed from the composite hinge sheet, the hinge portion can be reliably prevented from being torn off from the passport body.
  • the hinge part has sufficient strength against repeated bending without losing flexibility. Further, the hinge part is excellent in stability over time such as light deterioration resistance in actual use.
  • the present invention provides an electronic passport laser marking multilayer sheet and an electronic passport which are excellent in preventing falsification and forgery.
  • the present invention provides the following composite hinge sheet, a laser marking multilayer sheet for an electronic passport using the composite hinge sheet, and an electronic passport.
  • the mesh cloth or non-woven fabric having a body, or the woven fabric sheet is composed of a mesh cloth or non-woven fabric having a triaxial structure composed of a plurality of yarns of the warp, the weft, and the diagonal yarn, Of the plurality of warp yarns, weft yarns and diagonal yarns, at least one type of yarn is made of a flat yarn having a flat cross section, and the thermoplastic resin is a heat containing at least one type of thermoplastic elastomer.
  • thermoplastic elastomer is at least one selected from thermoplastic elastomers such as thermoplastic polyurethane elastomers, thermoplastic polyamide elastomers, thermoplastic polyester elastomers, thermoplastic olefin elastomers, and thermoplastic acrylic elastomers.
  • thermoplastic elastomers such as thermoplastic polyurethane elastomers, thermoplastic polyamide elastomers, thermoplastic polyester elastomers, thermoplastic olefin elastomers, and thermoplastic acrylic elastomers.
  • thermoplastic resin according to any one of [1] to [3], wherein the thermoplastic resin is allowed to enter the opening of the woven sheet in a melt-softened state so that the woven sheet and the thermoplastic resin are integrated.
  • Composite hinge sheet
  • the shape of the opening of the mesh cloth or nonwoven fabric having the biaxial structure is a square or a rectangle formed from the warp and the weft, and the size of the opening is 0.15 to 5 in length. 0.03 ⁇ 0.15 to 5.0 mm in width, or the shape of the opening of the mesh cloth or the nonwoven fabric having the triaxial structure is a polygon including a triangle, and the triaxial structure has the shape described above.
  • the shape of the opening of the triaxial structure formed from the warp and weft excluding the oblique yarn is square or rectangular, and the size of the opening is 0.5 to 10.0 mm ⁇ width
  • a single layer sheet made of a material, or the transparent laser marking sheet has a skin layer and a core layer, and the skin layer, which is both outermost layers, is an amorphous polyester having a glass transition temperature of 80 ° C. or higher.
  • the core layer is configured as a multilayer sheet 1 made of a polycarbonate resin and a transparent polycarbonate resin composition containing a laser light energy absorber, or the transparent laser marking sheet has a skin layer and a core layer.
  • the core sheet is formed as a multilayer sheet 2 in which the skin layer as an outer layer is made of a polycarbonate resin, and the core layer is made of a transparent polycarbonate resin composition containing a thermoplastic polycarbonate resin and a laser light energy absorber.
  • a core layer of the core sheet is made of a thermoplastic resin containing a polycarbonate resin, and at least one of the skin layer of the core sheet and the core layer is provided with a colorant.
  • a laser marking multilayer sheet for electronic passports configured as a colored core multilayer sheet.
  • the composite hinge sheet of the present invention it is possible to provide a composite hinge sheet excellent in tear resistance, rupture resistance, flexibility, bending resistance, durability, heat-fusibility, workability, and dimensional accuracy.
  • a composite hinge sheet in which resin is integrated in the opening can be provided.
  • it can be suitably used for a laser marking multilayer sheet for electronic passports having a multilayer structure.
  • the laser marking multilayer sheet for electronic passports is a multilayer sheet excellent in laser marking properties, such as marking on a transparent laser marking sheet without damage by laser light energy irradiation.
  • the contrast between the laser marking sheet fabric color and the laser-marked print area is high, and clear characters, symbols, designs, images, etc. are obtained, and the multilayer sheet has excellent heat-fusibility in the lamination process of the multilayer sheet.
  • by using a highly transparent resin it is possible to improve transparency from the viewpoint of total light transmittance, sheet transportability, release from a mold after hot pressing, heat resistance, bendability, A laser marking multilayer sheet for electronic passports with both wear and productivity can be provided.
  • the hinge portion becomes an electronic passport excellent in tear strength and tensile strength.
  • the hinge portion since the hinge portion is formed from the composite hinge sheet, the hinge portion can be reliably prevented from being torn off from the passport body.
  • the hinge part has sufficient strength against repeated bending without losing flexibility. Further, the hinge part is excellent in stability over time such as light deterioration resistance in actual use. Furthermore, it is possible to provide an electronic passport laser marking multilayer sheet and an electronic passport that are excellent in preventing falsification and forgery.
  • Fig. 2 is a partial plan view showing an embodiment of a mesh cloth having a biaxial structure composed of warp and weft, which is a woven sheet forming the composite hinge sheet of the present invention, schematically showing the state of the mesh cloth.
  • FIG. 1 is a partial plan view showing an embodiment of a mesh cloth having a triaxial structure composed of warp, weft, and diagonal threads, which is a woven sheet forming the composite hinge sheet of the present invention, and schematically shows the state of the mesh cloth
  • FIG. 1 is a partial plan view showing an embodiment of a mesh cloth having a triaxial structure composed of warp, weft, and diagonal threads, which is a woven sheet forming the composite hinge sheet of the present invention, and schematically shows the state of the mesh cloth FIG.
  • FIG. 1 is a partial plan view showing an embodiment of a mesh cloth having a triaxial structure composed of warp, weft, and diagonal threads, which is a woven sheet forming the composite hinge sheet of the present invention,
  • FIG. 1 is a partial plan view showing an embodiment of a nonwoven fabric having a biaxial structure consisting of warp and weft, which is a woven sheet forming the composite hinge sheet of the present invention, and schematically showing the state of the nonwoven fabric. It is. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a partial plan view showing an embodiment of a nonwoven fabric having a triaxial structure consisting of warp, weft and diagonal yarns, which is a woven sheet forming the composite hinge sheet of the present invention, and schematically shows the state of the nonwoven fabric.
  • FIG. 2 is a partially enlarged plan view showing an embodiment of a mesh cloth having a biaxial structure composed of warp and weft, which is a woven sheet forming the composite hinge sheet of the present invention, and shows the state of the opening of the mesh cloth. It is the figure shown typically.
  • 1 is a partially enlarged plan view showing an embodiment of a mesh cloth having a triaxial structure consisting of warp, weft and diagonal threads, which is a woven sheet forming the composite hinge sheet of the present invention, and is an opening of the mesh cloth It is the figure which showed the state of.
  • FIG. 1 It is a schematic diagram which shows one Embodiment of the laser marking multilayer sheet for electronic passports of this invention, Comprising: The cross section of the laser marking multilayer sheet for electronic passports which each of a transparent laser marking sheet and a core sheet
  • FIG. 1 It is a schematic diagram which shows another embodiment of the laser marking multilayer sheet for electronic passports of this invention, Comprising: The cross section of the laser marking multilayer sheet for electronic passports which a transparent laser marking sheet consists of three layers, and a core sheet consists of three layers It is the figure shown typically. It is a schematic diagram showing an example when the laser marking multilayer sheet for electronic passports of the present invention is used for an e-Card type passport. It is a schematic diagram showing an example when the laser marking multilayer sheet for electronic passports of the present invention is used for an e-Cover type passport. It is sectional drawing which showed typically the method of measuring and evaluating the softness
  • the present invention broadly includes a composite hinge sheet, a laser marking multilayer sheet for electronic passports, and electronic passports that have the invention specific matters, and is not limited to the following embodiments.
  • the composite hinge sheet of this embodiment is formed of a woven sheet 1 having a large number of openings 2 and a thermoplastic resin.
  • the woven sheet 1 is made of a mesh cloth or a nonwoven fabric having a biaxial structure composed of a plurality of warps 3 and wefts 4.
  • the woven sheet 1 is made of a mesh cloth or a non-woven fabric having a triaxial structure composed of a plurality of warp yarns 3, weft yarns 4, and diagonal yarns 5.
  • the woven sheet 1 is made of a mesh cloth or a non-woven fabric having a triaxial structure formed by adding a diagonal thread 5 to the biaxial structure composed of a plurality of warps 3 and wefts 4. Become. Further, among the plurality of yarns of the warp yarn 3, the weft yarn 4, and the diagonal yarn 5, at least one type of yarn is made of a flat yarn having a flat cross section. Furthermore, the thermoplastic resin is a thermoplastic resin containing at least one thermoplastic elastomer. Furthermore, the opening of the woven sheet is closed with the thermoplastic resin. In this way, the composite hinge sheet 10 is configured.
  • the composite hinge sheet of the present embodiment is used to make it easy to bind an electronic passport laser marking multilayer sheet (to be described later) having data or the like that can identify an individual to an electronic passport.
  • an electronic passport laser marking multilayer sheet to be described later
  • the respective relationships will be explained.
  • the woven sheet 1 (1A, 1C) is configured as a mesh cloth or a non-woven fabric having a biaxial structure composed of a plurality of warps 3 and wefts 4.
  • the woven sheet 1 (1B, 1D) has a triaxial structure composed of a plurality of yarns of warp yarn 3, weft yarn 4, and diagonal yarn 5.
  • the woven sheet 1 is made of a mesh cloth or a non-woven fabric having a triaxial structure formed by adding a diagonal thread 5 to the biaxial structure composed of a plurality of warps 3 and wefts 4. Become.
  • the composite hinge sheet By configuring the woven sheet as described above, sufficient strength can be imparted to the composite hinge sheet. Therefore, the composite hinge sheet can be thinned, and the composite hinge sheet can obtain sufficient tear resistance even if it is thinned. Furthermore, when used as an electronic passport, the fracture resistance, flexibility, bending resistance, durability, heat-fusibility, workability, and dimensional accuracy are sufficient.
  • the “biaxial structure” means a basic structure of a woven sheet formed by combining a plurality of warp and weft yarns.
  • the biaxial structure is a basic structure of the woven sheet, and is configured as a mesh cloth or a non-woven fabric.
  • a biaxial structure is composed of a plurality of warps 3 and wefts 4.
  • the woven sheet is configured as a mesh cloth or a nonwoven fabric.
  • the “flat yarn” described later may be used for all the warp yarn 3 and the weft yarn 4. Further, one of the warp yarn 3 and the weft yarn 4 is used as the “flat yarn”, and the remaining yarn is used as a normal yarn or a multi-yarn yarn, or both yarns are used. You may comprise the said biaxial structure. That is, the above-mentioned “flat yarn” and the yarn of either normal yarn or multi-yarn may constitute the biaxial structure, or the “flat yarn” and normal yarn or multi-yarn You may comprise the said biaxial structure with both thread
  • FIG. 1 is a plan view of a woven sheet provided with a biaxial structure composed of a plurality of warps 3 or wefts 4 as a basic structure, and is a schematic view partially shown.
  • FIG. 3 is a plan view of a woven sheet provided with a biaxial structure as a basic structure composed of a plurality of warp yarns 3 or weft yarns 4, and is a schematic diagram partially showing.
  • seat of the state knitted so that the warp 3 and the weft 4 may alternate in the up-and-down position is shown.
  • FIG. 1 is a plan view of a woven sheet provided with a biaxial structure composed of a plurality of warps 3 or weft yarns 4 as a basic structure, and is a schematic view partially shown.
  • positioned and adhered all the wefts 4 on the warp 3 is shown.
  • positioned and adhered all the warps 3 on the weft 4 may be sufficient.
  • the method for adhering the warp 3 and the weft 4 of the woven sheet as shown in FIG. 3 is not particularly limited, and examples thereof include an adhering method such as hot pressing.
  • triaxial structure means a basic structure of a woven sheet formed by combining a plurality of warp, weft, and diagonal yarns.
  • the triaxial structure has the same configuration as the biaxial structure except that it has “oblique yarn”. That is, the “triaxial structure” means a basic structure of a woven sheet formed by combining the biaxial structure composed of a plurality of warp yarns 3 and weft yarns 4 and the oblique yarn 5. To do.
  • the woven sheet having the triaxial structure is configured as a mesh cloth or a nonwoven fabric. Specifically, as shown in FIGS. 2 and 4, a triaxial structure is constituted by a plurality of yarns of warp yarn 3, weft yarn 4, and diagonal yarn 5. Furthermore, from such a triaxial structure, the woven sheet is configured as a mesh cloth or a nonwoven fabric.
  • the “flat yarn” described later may be used for all of the warp yarn 3, the weft yarn 4, and the oblique yarn 5. Further, any one of the warp yarn 3, the weft yarn 4, and the diagonal yarn 5 is used for the “flat yarn”, and the remaining yarn is used for either a normal yarn or a multi-yarn yarn, or both of them. You may comprise the said triaxial structure using a thread
  • FIG. 2 is a plan view of a woven sheet including a triaxial structure composed of a plurality of yarns of warp yarn 3, weft yarn 4, and diagonal yarn 5 as a basic structure, partially shown. It is a schematic diagram.
  • FIG. 4 is a plan view of a woven sheet having a triaxial structure as a basic structure, which is composed of a plurality of warp yarns 3, weft yarns 4, and diagonal yarns 5, and is a partially schematic view.
  • FIG. 2 shows an example of a woven sheet (an example of mesh cloth) in which the warp yarns 3, the weft yarns 4, and the diagonal yarns 5 are knitted so as to alternate in the upper and lower positions.
  • FIG. 1 shows an example of a woven sheet (an example of mesh cloth) in which the warp yarns 3, the weft yarns 4, and the diagonal yarns 5 are knitted so as to alternate in the upper and lower positions.
  • Example 4 an example of a woven sheet in which all the warp yarns 3 are arranged on the diagonal yarns 5 and all the weft yarns 4 are arranged on the warp yarns 3 and the respective yarns are bonded to each other (nonwoven fabric).
  • Example 4 the present invention is not limited to this example.
  • the warp yarn 3 or the weft yarn 4 may be disposed at the lowermost position, and the diagonal yarn 5 or the warp yarn 3 may be disposed at the uppermost position. May be a woven-like sheet in which all are disposed and bonded.
  • the method for adhering the warp yarn 3, the weft yarn 4 and the diagonal yarn 5 of the woven sheet as shown in FIG. 3 is not particularly limited, but examples thereof include an adhering method such as hot pressing. Can do.
  • At least one type of warp and weft of the biaxial structure is composed of a flat yarn having a flat surface.
  • the above-mentioned “having a flat surface” has a flat surface in which a part of the cross section is linear in a cross section perpendicular to the direction in which the yarn extends.
  • a flat yarn in which at least one of a plurality of warp yarns, weft yarns, and diagonal yarns of the triaxial structure has a flat surface.
  • the above “having a flat surface” means that a part of the cross section is linear in a cross section perpendicular to the direction in which the yarn extends. It has a flat surface.
  • the strength of the composite hinge sheet depends on the strength of the woven sheet. That is, in the composite hinge sheet, the force (stress) that causes the sheet to break by applying a tearing or pulling force correlates with the strength of the woven sheet if the strength of the thermoplastic resin is constant. Therefore, in order to obtain sufficient strength such as tear resistance even if the thickness of the composite hinge sheet is thin, a woven sheet excellent in strength such as tear resistance is required even if it is thin.
  • the strength of the woven sheet is proportional to the strength of each yarn and the density of the yarn per fixed area of the woven sheet. That is, when the yarn density per fixed area of the woven sheet increases, the area of the opening formed in the fixed area of the woven sheet decreases. Therefore, if the area of the opening per fixed area of the woven sheet is constant, the strength of the woven sheet is proportional to the strength of the yarn (cross-sectional area ⁇ strength). The strength of the yarn is proportional to the cross-sectional area of the yarn and the strength per cross-sectional area of the yarn. On the other hand, if the yarn strength is constant, the strength of the woven sheet is proportional to the yarn density per fixed area of the woven sheet. In other words, the strength of the woven sheet is inversely proportional to the area of the opening per fixed area of the woven sheet.
  • the cross sectional area of the yarn is determined by the diameter. Therefore, when the diameter of the cross section of the yarn increases, the cross sectional area of the yarn also increases. Further, when the diameter of the cross section of the yarn is increased, the thickness of the intersection portion, which is a portion where the warp yarn and the weft yarn intersect, in the woven sheet increases. On the other hand, in the case of a flat yarn having a rectangular cross section, the cross sectional area is obtained from thickness ⁇ width.
  • the above-described breaking stress can be increased by using a predetermined flat yarn without increasing the intersection of the warp and weft.
  • the thickness of the hinge sheet used for an electronic passport is thin. This is because the total thickness of the electronic passport laminate, that is, the data page is defined to be around 760 ⁇ m as in the case of the card.
  • transparent oversheet transparent laser marking sheet
  • core sheet multilayer sheet
  • inlet IC-chip and antenna mounting sheet
  • composite hinge sheet / core sheet (multilayer sheet) / transparent oversheet (transparent laser marking sheet)
  • the inlet needs to be provided with an IC-chip and an antenna, so that a certain thickness is required. Under such restrictions, when the thickness of the composite hinge sheet is increased, the thickness of the transparent oversheet and the core sheet must be decreased.
  • the print density printed by laser marking on the transparent oversheet is greatly influenced by the sheet thickness.
  • the thickness of the core sheet is required to have a function of concealing the antenna wiring of the inlet. If the thickness of the core sheet is reduced, the concealability is deteriorated. Therefore, increasing the thickness of the composite hinge sheet decreases the thickness of other sheets, which may impair the function of the electronic passport data page.
  • a composite hinge sheet having sufficient strength such as tear resistance can be obtained even if the thickness is small. Furthermore, the thickness of the electronic passport can be reduced and the characteristics of the electronic passport can be exhibited.
  • flat yarn refers to a thread having a flat surface on its surface.
  • a wide yarn having a flat cross-sectional shape is a flat yarn.
  • the flat yarn include a yarn in which the surface of a yarn having a rectangular or circular cross-sectional shape is flattened and the yarn is crushed in the thickness direction so that the cross-sectional shape is flattened.
  • the cross-sectional shape of the flat yarn is not limited to a polygon such as a flat rectangle.
  • the flat yarn surface only needs to have at least one flat surface in the direction in which the yarn extends.
  • the above-mentioned “flat yarn” is limited to a thread having a corner (corner) having a right-angled corner portion (corner portion) formed by orthogonality between the sides of the flat yarn.
  • the “flat yarn” includes a yarn in which a portion corresponding to the above-described corner portion in the cross-sectional shape of the yarn is formed in an arc shape.
  • the “flat yarn” includes a yarn having one or more corners such as a semicircular shape, a polygonal shape, a pointed shape, or the like.
  • woven sheet may be formed by appropriately combining a flat yarn, a normal yarn, and a multi-yarn.
  • At least one type of yarn constituting the mesh cloth or the nonwoven fabric is made of at least one type of yarn selected from polyester, polyamide, and polypropylene.
  • the mesh cloth or the nonwoven fabric can have flexibility, bending resistance, and durability. Therefore, even when the above “normal yarn” is used, it is preferable that the “normal yarn” is composed of at least one yarn selected from polyester, polyamide, and polypropylene.
  • the above “multi yarn” it is preferably made of at least one yarn selected from polyester, polyamide and polypropylene.
  • a woven sheet is formed from a yarn formed from such a material and a flat yarn formed from a material described later, the woven sheet is ensured of flexibility, bending resistance and durability. You can have it. However, the most preferable case is when all of the yarns constituting the woven sheet are made of flat yarns formed of the material described later.
  • the flat yarn material is preferably made of at least one yarn selected from polyester, polyamide, and polypropylene.
  • the woven sheet has flexibility, bending resistance and durability.
  • a composite hinge sheet excellent in tensile strength and tear strength can be formed.
  • the flat yarn formed from the said material has a low price, and has supply property, when using it as an industrial product.
  • polyesters and polyamides are most preferable among the flat yarn materials for obtaining the above characteristics.
  • the flat yarn has a thickness of 20 to 90 ⁇ m and the flat yarn has a width of 0.2 to 2.0 mm. Further, it is preferable that the flat yarn has a thickness of 40 to 75 ⁇ m and the flat yarn has a width of 0.3 to 1.0 ⁇ m.
  • the thermoplastic resin can sufficiently enter the opening of the woven sheet.
  • the thickness of the flat yarn is less than 20 ⁇ m, it is too thin. For this reason, the tear resistance may be inferior, and the fracture resistance, flexibility, bending resistance, and durability may be difficult to obtain. If these characteristics cannot be obtained, the effects of preventing tampering and forgery may be reduced.
  • the thickness of the flat yarn is more than 90 ⁇ m, in the woven sheet using such a thick yarn, the intersection point of the yarn becomes thick. As a result, the composite hinge sheet becomes too thick.
  • the electronic passport itself becomes too thick. Therefore, it becomes an electronic passport that is inconvenient to carry or difficult to bend and may be poorly handled.
  • the “intersection point” means a portion where the warp yarn 3 and the weft yarn 4 intersect (overlapping portion) as shown in FIG. 1 and FIG. 6.
  • the “intersection point” is a portion where the warp yarn 3, the weft yarn 4, and the diagonal yarn 5 intersect (overlapping portion) as shown in FIGS. 2 and 4. ), Indicated by the symbol 6.
  • the width of the flat yarn is less than 0.2 mm, the flat yarn must be increased in thickness in order to secure the cross-sectional area necessary for exerting the tensile strength and tear strength. As a result, the composite hinge sheet becomes too thick. If the width of the flat yarn is more than 2.0 mm, the ratio of the opening to the area of the woven sheet (opening ratio) becomes too small. If the aperture ratio is too small, the thermoplastic resin and the woven sheet may be insufficiently integrated, and the thermoplastic resin and the woven sheet may be peeled off.
  • the term “yarn cross section (yarn cross section shape)” means a cross section cut at right angles to the length direction of the yarn. That is, it does not mean a horizontal section (cross-sectional shape) in the length direction of the yarn.
  • a fiber diameter suitable for the thickness of the woven sheet can be appropriately selected.
  • the normal yarn and multi-yarn having a diameter of about 40 to 100 ⁇ m can be suitably used.
  • the region is surrounded and bounded by warp, weft, and diagonal yarns, and the inside (region) is a gap. This portion is called an opening (second opening).
  • the mesh is an opening.
  • a quadrangular opening 2 (first opening 2a) formed from warp yarn 3 and weft yarn 4 as shown in FIG. 1 or 3
  • a shape such as a triangular mesh shape (triangular mesh shape) or a hexagonal mesh shape (hexagonal mesh shape) is formed from a plurality of yarns of warp, weft, and diagonal yarns.
  • the mesh is an opening.
  • a triangular opening 2 (second opening 2 b) formed from the yarns of the warp yarn 3, the weft yarn 4, and the diagonal yarn 5 can be mentioned. it can.
  • the “opening” may be formed so as to penetrate the woven sheet (from one surface to the other surface) or through a gap formed in the mesh pattern of the woven sheet. And may be formed so as to penetrate therethrough.
  • first opening a large number of openings (first opening, second opening) are formed on the woven sheet, so that a part of the thermoplastic resin described later (the thermoplastic resin melted at the time of integration) Part) can sufficiently enter the opening, and moreover, it becomes easier to block all of the openings.
  • thermoplastic resin when making a part of said thermoplastic resin penetrate
  • the thermoplastic elastomer constituting the thermoplastic resin that has entered the opening of the woven sheet closes the opening of the woven sheet. Therefore, it becomes easy to integrate the woven sheet and the thermoplastic resin.
  • a novel composite hinge sheet having a flat surface in which the woven sheet and the thermoplastic resin are integrated is obtained.
  • invaded the opening part of the fabric-like sheet may form the layer of a thermoplastic resin on both surfaces of a fabric-like sheet. By forming this thermoplastic resin layer, it becomes easy to integrate the woven sheet, the composite hinge sheet made of the thermoplastic resin, and another sheet.
  • the shape of the “opening” may be a rectangular shape such as a plan view, a square, a rectangle, or the like.
  • the periphery of the opening (first opening) is bounded by warp and weft, and the inside is a gap.
  • the shape of the opening refers to a shape that forms the periphery of a hole formed in one surface (or the other surface) of the woven sheet, and from one surface of the woven sheet to the other. It is not the shape of the depth of the hole toward the surface. The same applies to the shape of the opening of the woven sheet having a triaxial structure.
  • the shape of the “opening” of the woven sheet having a triaxial structure may include a plan view, a triangle, a hexagon, and other polygons.
  • the periphery of the opening (second opening) is bounded by warp, weft, and diagonal threads, and the inside is a gap.
  • openings made of squares and rectangles are preferable.
  • a square opening is preferable.
  • the thermoplastic resin can surely enter the opening. Therefore, the hinge sheet is excellent in terms of tearability, rupture resistance, flexibility, bending resistance, durability, workability, dimensional accuracy, and the like. Furthermore, it becomes easy to manufacture industrially.
  • the manufacturing process becomes complicated as compared with the woven sheet having a biaxial structure due to the addition of diagonal threads.
  • the cost burden increases slightly.
  • the woven sheet with the triaxial structure having the triangular opening has increased strength in terms of tearing resistance, rupture resistance, and the like.
  • the hinge sheet is effective as a countermeasure against falsification and counterfeiting. In other words, it is possible to cope with stress not only in the vertical and horizontal directions but also in the diagonal direction as much as the diagonal threads are added.
  • the opening shape of the opening is a square or rectangle formed by a biaxial structure composed of warp and weft, and the size of the opening is 0.15 to 5.0 mm in length ⁇ 0.15 in width. It is preferably ⁇ 5.0 mm.
  • the opening shape of the opening is a polygon including a triangle formed by a triaxial structure composed of warp, weft, and diagonal, and the size of the opening formed by the warp and weft is warp It is preferably 0.5 to 10.0 mm ⁇ width 0.5 to 10.0 mm.
  • thermoplastic resin and the woven sheet are not sufficiently integrated may be produced.
  • the yield rate is reduced, which is not preferable.
  • hinge sheets that are not sufficiently integrated with thermoplastic resin and woven fabric sheet will cause problems in terms of tearability, fracture resistance, flexibility, bending resistance, durability, workability, dimensional accuracy, etc. Cheap.
  • the melt-softened thermoplastic resin may not be able to sufficiently enter the opening. . Therefore, the integration of the thermoplastic resin and the woven sheet may be insufficient.
  • the opening of the triaxial structure is less than 0.5 mm in length (or less than 0.5 mm in width).
  • the opening of the biaxial structure is more than 5.0 mm in length (or more than 5.0 mm in width)
  • the flatness of the outermost surface of the data page is inferior during heating lamination.
  • the heat resistance and the rigidity of the width portion of the flat yarn and the thermoplastic resin that has entered the opening are different.
  • the above problem occurs because the width portion of the flat yarn is larger in rigidity than the thermoplastic resin and has higher heat resistance.
  • the thermoplastic resin is partly extruded by the temperature and pressure during the heat lamination, and irregularities are generated in the composite hinge sheet. When such irregularities occur, the irregularities are transferred to the outermost surface of the data page during printing, and the flatness of the outermost surface of the data page is inferior.
  • the opening of the triaxial structure is more than 10.0 mm in length (or more than 10.0 mm in width).
  • the “area of the opening” in the present embodiment is an opening formed from warp and weft, that is, a region bounded by warp and weft ( It means the area of the (gap) part.
  • the area of this opening part is an area of the shape which forms the circumference
  • an opening 2 bounded by warp 3 and weft 4 can be exemplified.
  • the opening 2 is bounded by a predetermined length a of warp yarn and a predetermined length b of weft yarn in plan view.
  • the length a opening It is calculated by the length of the warp yarn to be bounded) ⁇ the width b (the length of the weft yarn to border the opening).
  • the opening area of the opening formed by the warp and the weft is 0.15 to 5.0 mm in length ⁇ 0.15 to 5.0 mm in width”
  • the length a (the length of the warp that bounds the opening) is 0.15 to 5.0 mm
  • the width b (the length b of the weft that bounds the opening) is 0.15 to 5.
  • it is 0 mm, it means that the value calculated by multiplying the vertical length and the horizontal length is “the opening area of the opening formed by the warp and the weft”.
  • the “area of the opening” here is an area of a region (gap) formed by warp and weft and bounded by warp and weft. That is, in the case of a woven sheet having a triaxial structure, the area of the area portion excluding the oblique yarn (the oblique yarn portion) arranged in the region bounded by the warp and the weft is “the area of the opening”.
  • the area of the opening corresponds to a calculation of the area (opening 2 in FIG. 5) of the opening without the diagonal threads, as in the biaxial structure shown in FIG.
  • the opening area in the case of a woven sheet having a triaxial structure is calculated as follows. First, as shown in FIG. 6, the opening 2 is bounded by the warp yarn 3, the weft yarn 4, and the diagonal yarn 5. That is, the opening 2 is formed by a predetermined length c of the warp yarn 4, a predetermined length d of the weft yarn 4, and the diagonal yarn 5. However, as described above, since the area of the opening is a region excluding the oblique thread 5, even if the opening shape of the opening 2 is triangular as shown in FIG. Calculated in the area.
  • the opening area of the opening formed by the warp and the weft is 0.5 to 10.0 mm in length ⁇ 0.5 to 10.0 mm in width”
  • the longitudinal length thereof The value calculated by multiplying the width by the horizontal length means “the opening area of the opening formed by the warp and the weft” of the woven sheet having a triaxial structure.
  • the size of the opening in the biaxial structure is preferably 0.5 to 2.0 mm in length and 0.5 to 2.0 mm in width.
  • the size of the opening in the triaxial structure is preferably 2.0 to 8.0 mm in length and 2.0 to 8.0 mm in width.
  • the opening area is the area of a square or a rectangle formed from warp and weft yarns except for the diagonal yarn, as in the case of the triangle. It corresponds to.
  • the area may be calculated in the same manner even when the shape of the opening in the woven sheet with diagonal threads is other polygons.
  • thermoplastic resin can sufficiently enter the opening of the woven sheet. Therefore, a composite hinge sheet in which a thermoplastic resin excellent in tensile strength and tear strength and excellent in sheet flatness and a woven sheet is integrated can be obtained. That is, in order to sufficiently penetrate the thermoplastic resin into the opening of the woven sheet, the opening ratio of the woven sheet (ratio of the area of the opening to the area of the woven sheet) and the area of the opening are large, The condition is that the flat yarn is narrow. However, if the width of the flat yarn is too narrow in a thin woven sheet, the strength of the yarn will be reduced. Furthermore, if the aperture ratio is excessively increased, the strength of the woven sheet itself is decreased.
  • the area of the opening is too large, there is a possibility that problems arise because the heat resistance and rigidity of the width portion of the flat yarn and the thermoplastic resin that has entered the opening are different as described above. That is, there is a problem that the flatness of the outermost surface of the data page is inferior at the time of heat lamination by a vacuum press machine or the like when forming an electronic passport laminate. In other words, since the thermoplastic resin is partially extruded by the temperature and pressure at the time of heat lamination, irregularities are generated in the composite hinge sheet. When the unevenness is transferred to the top surface of the data page, the flatness of the top surface of the data page is inferior.
  • the melt-softened thermoplastic resin discharged from the T die of the extrusion molding machine with T die is It becomes difficult to enter the opening.
  • the connection structure of the thermoplastic resin is not formed at the opening of the woven sheet, and there is a possibility that the woven sheet and the thermoplastic resin are not sufficiently integrated. In such a hinge sheet, the fabric-like sheet and the thermoplastic resin are easily peeled off.
  • the opening ratio of the woven sheet is preferably 50% or more and less than 80%. If the opening ratio is less than 50%, the thermoplastic resin may not sufficiently enter the opening of the woven sheet. Furthermore, there is a possibility that problems such as difficult cutting in the cutting process and “curling” of the composite hinge sheet in the heat lamination process may occur. Moreover, when the aperture ratio exceeds 80%, there is no industrial product as a woven sheet. Probably a problem occurs in the process of weaving because the opening is too wide, or even if it is obtained as a woven fabric, there are too few intersections where the warp and weft of the fabric intersect, and the intersection of the woven fabric shifts, so-called “ I guess that it may not be an industrial product because it is “out of sight”.
  • the aperture ratio can be obtained, for example, according to the description on pages (11) to (12) of JP2011-79285A.
  • the thickness of the woven sheet is preferably 50 to 200 ⁇ m.
  • seat which acquired sufficient tear resistance can be formed by forming in desired thickness.
  • the thickness of the woven sheet is less than 50 ⁇ m, the tensile strength and tear strength may be insufficient.
  • the thickness of the composite hinge sheet to be obtained exceeds 200 ⁇ m, and the total thickness of the data page of the electronic passport is defined. growing. As described above, if the thickness of the composite hinge sheet is increased, the transparent oversheet and the core sheet constituting the laser marking multilayer sheet for electronic passport must be thinned.
  • the thickness of the transparent oversheet is reduced, there is a possibility that the laser colorability may be lowered.
  • the thickness of the core sheet is reduced, there is a possibility that a problem may occur in sheet feeding in the printing process or insufficient concealment may occur, which is not preferable.
  • the thickness of the woven sheet is a portion where the warp yarn 3 and the weft yarn 4 intersect (overlapping portion) as shown in FIGS. It is also the thickness of the intersection 6.
  • the thickness of the woven sheet having a triaxial structure as shown in FIGS. 2 and 4, it is a portion where the warp yarn 3, the weft yarn 4, and the diagonal yarn 5 intersect (overlapping portion). It is also a thickness.
  • the shape of the opening of the mesh cloth or nonwoven fabric having a biaxial structure is a square or a rectangle formed from warp and weft, and the size of the opening is 0.15 to 5.0 mm ⁇ width
  • a composite hinge sheet comprising a woven sheet, preferably 0.15 to 5.0 mm, a flat yarn thickness of 20 to 90 ⁇ m, and a flat yarn width of 0.2 to 2.0 mm.
  • the shape of the opening of the mesh cloth or nonwoven fabric having a triaxial structure is a polygon including a triangle, and the triaxial structure is formed from warps and wefts excluding the diagonal threads of the triaxial structure.
  • the shape of the opening is square or rectangular, the size of the opening is 0.5 to 10.0 mm in length ⁇ 0.5 to 10.0 mm in width, and the thickness of the flat yarn is 20 to 90 ⁇ m. It is preferably a composite hinge sheet provided with a woven sheet having a flat yarn width of 0.2 to 2.0 mm. When a composite hinge sheet described later is formed from such a woven sheet, even if the thickness of the intersection is thin, the tear strength and the tensile strength are excellent.
  • thermoplastic resin in the composite hinge sheet of the present invention is a thermoplastic resin containing at least one kind of thermoplastic elastomer.
  • a preferred thermoplastic elastomer is at least one selected from thermoplastic polyurethane elastomers (TPU), thermoplastic polyamide elastomers, thermoplastic polyester elastomers, thermoplastic olefin elastomers, and thermoplastic acrylic elastomers.
  • the mixing ratio when two or more types are mixed and used is not particularly limited, but in the case of mixed use, it is preferable that at least a thermoplastic polyurethane elastomer (TPU) is included. From the viewpoint of obtaining good tear resistance and flexibility.
  • TPU thermoplastic polyurethane elastomer
  • thermoplastic olefin elastomer examples include propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1- Tridecene, 1-tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1-nonadecene, 1-eicocene, 3-methyl-1-butene, 3-methyl-1-pentene, 3-ethyl- 1-pentene, 4-methyl-1-pentene, 4-methyl-1-hexene, 4,4-dimethyl-1-hexene, 4,4-dimethyl-1-pentene, 4-ethyl-1-hexene, 3- Examples include ethyl-1-hexene, 9-methyl-1-decene, 11-methyl-1-di
  • the thermoplastic resin has a flexibility with a surface hardness Shore A of 85 or more and a Shore D of less than 70.
  • the composite hinge sheet integrated with the woven sheet can be made flexible.
  • the composite hinge sheet can have flexibility that is the same as that at room temperature.
  • heat fusion with other sheets can be ensured in the heat press step when forming the laser marking multilayer sheet for electronic passports.
  • the opening of the woven sheet is melt-filled with a thermoplastic resin such as a thermoplastic elastomer, and then the thermoplastic resin is formed in a layer on the surface of the non-opened woven sheet. .
  • a thermoplastic resin such as a thermoplastic elastomer
  • thermoplastic resin having a surface hardness of Shore A of 85 or more and Shore D of less than 70 examples include thermoplastic polyurethane elastomer (TPU).
  • thermoplastic resin is preferably made of at least one selected from thermoplastic elastomers or amorphous polyester resins having a color difference ⁇ E of 6 or less after 100 hours in the QUV accelerated weather resistance test. This is because the temporal deterioration stability can be maintained. In general, when the color difference ⁇ E is about 0.5 to 0.7, the difference can be recognized. If the color difference ⁇ E is 6, yellowing has started considerably. Furthermore, when the color difference ⁇ E exceeds 6, the appearance is poor and the product feels uncomfortable and cannot be used. Therefore, as described above, the color difference ⁇ E is based on 6 or less.
  • Such a QUV accelerated weather resistance test may be evaluated in parallel with mechanical properties such as tensile strength at break and tensile elongation at break. More specifically, before and after the QUV accelerated weather resistance test, tests such as tensile strength at break and tensile elongation at break may be performed to evaluate the retention rate and durability of the test piece (sheet).
  • the lower limit is considered to be at least about 60%. If it is less than 60%, it is about half of the initial performance, which is not preferable for use of the product.
  • an inorganic filler, an organic filler, another thermoplastic resin, or the like may be mixed with the thermoplastic resin made of the thermoplastic elastomer as long as the function is not hindered.
  • colorants such as lubricants, stabilizers, light stabilizers, antioxidants, ultraviolet absorbers, pigments and dyes may be added and mixed.
  • examples of the inorganic filler include mica, mica, micromica, silica, calcium carbonate, and the like.
  • examples of the organic filler include organic fibers such as polyester fibers, PPS fibers, and polyamide fibers.
  • thermoplastic resins examples include acrylonitrile-styrene copolymer resin (AS resin), polypropylene resin, acrylonitrile-butadiene-styrene copolymer resin (ABS resin), acrylic resin, and polycarbonate resin.
  • AS resin polypropylene resin, ABS resin, acrylic resin, polycarbonate resin or the like
  • AS resin polypropylene resin
  • ABS resin acrylic resin
  • polycarbonate resin polycarbonate resin
  • the inorganic filler for example, mica, mica, micromica, silica, and the like may be blended for the same purpose.
  • colorants such as pigments and dyes may be blended.
  • a lubricant, a stabilizer, a light stabilizer, an antioxidant, an ultraviolet absorber and the like may be blended for the purpose of improving the stability during molding or use.
  • the mesh cloth or nonwoven fabric constituting the woven sheet has tensile strength and tear strength even if it is thin, and has flexibility and bending resistance (referred to as hinge characteristics). Moreover, the said thermoplastic resin has a softness
  • thermoplastic resin is heat-sealed with a sheet formed from a composition containing a polycarbonate resin or a layer formed from a thermoplastic resin composition containing an amorphous polyester resin of a three-layer core sheet.
  • the said connection structure means the structure of the state which obstruct
  • the composite hinge sheet of this embodiment is composed of a woven sheet and a thermoplastic resin. That is, in the composite hinge sheet of the present embodiment, the composite hinge sheet having both characteristics is formed by closing the opening of the woven sheet as described above with the thermoplastic resin. In other words, it is a novel composite hinge sheet in which the flexibility of the thermoplastic elastomer and the strength, rigidity, and heat resistance of the woven sheet are compatible.
  • this composite hinge sheet is very useful for firmly binding a transparent laser marking sheet (described later), a core sheet (described later), and a so-called inlet together with the cover of the passport and other visa sheets. It is a sheet that plays an important role.
  • the transparent laser marking sheet is a sheet on which information such as images and characters is written by laser marking.
  • the core sheet is a sheet on which information such as images and characters is printed by printing or the like.
  • the inlet is a sheet arranged by storing data or the like in a storage medium such as an IC chip.
  • the composite hinge sheet needs to have heat-fusibility, moderate flexibility, heat resistance in the heat-fusing process, etc., which enable firm binding with the core sheet. Moreover, when this composite hinge sheet is bound to a cover of an electronic passport, etc., it is required to have excellent tear strength and tensile strength of the sewing machine portion. And it is calculated
  • the above-mentioned material meeting such a purpose is suitably used for the composite hinge sheet.
  • thermoplastic resin enters the opening of the woven sheet in a molten state and closes the opening. That is, it is preferable that the opening of the woven sheet is closed by the thermoplastic resin, and the woven sheet and the thermoplastic resin are naturally integrated.
  • the thermoplastic resin 7 is infiltrated into the opening 2 of the woven sheet to be filled.
  • the composite hinge sheet 10 (10B) may be formed by forming the skin layer 8 made of the thermoplastic resin on the upper and lower surfaces of the woven sheet. By forming the skin layer in this way, a novel thermoplastic composite sheet that combines the strength, rigidity, and heat resistance of a woven sheet with the flexibility, low-temperature characteristics, and thermoplasticity of a thermoplastic resin. Can be obtained.
  • the “skin layer” means a layer composed of a region formed of a thermoplastic resin from the surface of the thermoplastic resin in which the opening is closed to the surface of the composite hinge sheet.
  • This composite hinge sheet is excellent in heat fusion with the core sheet. Therefore, it is good to use for the hinge sheet
  • the peel strength between the core sheet / composite hinge sheet / core sheet can be made sufficient.
  • the electronic passport can have a hinge characteristic. That is, even if repeated bending is performed at a portion to be bound by the sewing machine, the electronic passport can have a hinge characteristic that can withstand the repeated bending. Further, the passport is excellent in the fracture strength of the sewing machine portion.
  • the passport hinge characteristics at low temperatures that can withstand use of passports in low-temperature regions of the world, both in Japan and overseas. Furthermore, it becomes a passport excellent in hinge characteristics and breaking strength of the sewing machine part in a high temperature region. In addition, the passport is excellent in aging stability even for a long period of time, such as 10 years, which is the longest expiration date of the passport. Therefore, the passport has characteristics that can withstand long-term use in any region.
  • thermoplastic resin penetrates into the opening of the woven sheet in a molten state and is not opened means that the thermoplastic resin melted in a large number of openings formed in the woven sheet. This means that a part of the intruder enters and closes all the openings, resulting in a non-opened state.
  • thermoplastic resin is integrated with the woven sheet.
  • a thermoplastic polyurethane elastomer it is preferably melt-extruded at 170 to 240 ° C.
  • chemical or physical pretreatment may be performed in advance on the warp, weft, and diagonal threads constituting the woven sheet.
  • primer application, corona treatment, plasma treatment and the like can be mentioned.
  • the composite hinge sheet causes the thermoplastic resin in the melted and softened state to enter the openings of the woven sheet, thereby filling the thermoplastic resin in all of the openings of the woven sheet.
  • the woven sheet and the thermoplastic resin are integrated.
  • the melt-softened thermoplastic resin and the woven sheet are laminated, and the melt-softened thermoplastic resin enters the opening of the woven sheet.
  • the composite sheet is inverted, and the melt softening state thermoplastic resin is further infiltrated and filled from the side opposite to the side where the melt softening state thermoplastic resin is first intruded.
  • the method for laminating the melt-softened thermoplastic resin and the woven sheet is not particularly limited.
  • thermoplastic resin is taken out from the T die into a sheet in a molten state using an extruder with a T die.
  • the woven sheet is brought into contact, guided between two take-up rolls, and a melt-softened thermoplastic resin is introduced into the opening of the woven sheet.
  • a skin layer may be formed on the composite hinge sheet in which the thermoplastic resin is intruded into the opening of the woven sheet in a melt-softened state and all of the opening of the woven sheet is filled with the thermoplastic resin. .
  • This skin layer may be formed by layering a thermoplastic resin on both the upper and lower sides of the woven sheet. In this case, it is preferable that the thickness of the skin layers formed from the thermoplastic resins on both the upper and lower sides is uniform. This is because if the skin layers formed from the upper and lower thermoplastic resins have different thicknesses, warping may occur in the composite sheet, resulting in poor sheet transportability. Further, there may be a large amount of warpage in the heating and laminating step when laminating with other sheets (for example, core sheets). In this case, there is a possibility that a problem may occur when binding with a cover or the like.
  • the shape, size, etc. of the composite hinge sheet are not particularly limited as long as it is easy to bind the laser marking multilayer sheet for electronic passports. It is preferable to select appropriately as required.
  • thermoplastic resin sheet adjacent to the opening of the woven sheet for example, a part of the core sheet softens and penetrates, and the thermoplastic resin on both sides is connected to the opening of the woven sheet.
  • interlayer adhesion also referred to as heat-fusibility
  • a transparent oversheet made of a polycarbonate resin / core sheet / woven fabric sheet / core sheet / polycarbonate resin a problem arises.
  • the temperature at which the polycarbonate resin sheet is softened is about 170 to 210 ° C. If such a relatively high temperature is heated and pressurized with a vacuum press machine, the pressure may be insufficient. is there. Furthermore, if the heating temperature or time is insufficient, the softening penetration of the polycarbonate resin may be insufficient in the opening of the woven sheet. And when the softening penetration
  • thermoplastic resin sheet composed of a thermoplastic resin used for the composite hinge sheet
  • the heat fusion property between the sheets is excellent. Therefore, the interlayer adhesive strength is sufficient.
  • the thermoplastic resin sheet is thin, there is a problem that the tensile strength and tear strength are not sufficient.
  • the thermoplastic resin is softened and heat-bonded with the adjacent core sheet in the heat lamination step. At this point, the compatibility between the thermoplastic resin and the resin of the skin layer of the core sheet is good. Therefore, heat fusion can be performed at a relatively low pressure. Further, since the composite-integrated woven sheet is not softened, there is no “resin protrusion”. Therefore, even if the composite hinge sheet is used for a laser marking multilayer sheet for electronic passports, no reduction in the total thickness of the laser marking multilayer sheet for electronic passports is observed.
  • thermoplastic resin is formed as a uniform layer on both surfaces of the woven sheet.
  • the thickness of the composite hinge sheet is preferably 50 to 300 ⁇ m. Further, the thickness of the composite hinge sheet is more preferably 80 to 200 ⁇ m.
  • the composite hinge sheet has a thickness within the desired range, flexibility and repeated bending strength can be increased, and versatility is improved. Therefore, it is difficult for problems to occur.
  • the thickness of the composite hinge sheet is less than 50 ⁇ m, the composite hinge sheet is inferior in tear resistance and the like, and may be insufficient as a countermeasure against falsification and forgery. Further, when the thickness of the composite hinge sheet is more than 300 ⁇ m, the flexibility is inferior and the repeated bending strength is likely to be lowered. For this reason, there is a possibility that problems occur and versatility is also inferior.
  • the electronic passport type includes an “e-Card” type and an “e-Cover” type.
  • An “e-Card” type electronic passport is obtained by binding an IC-chip and an antenna and binding a data page describing personal information and the like with a cover.
  • An electronic passport of the “e-Cover” type is obtained by binding an inlay with an IC-chip and an antenna on the cover and a data page describing personal information and the like to the cover.
  • the total thickness is about 800 ⁇ m, similar to the IC card.
  • the “e-Cover” type data page does not have an IC-chip and an antenna, so that the total thickness is about 400 to 600 ⁇ m.
  • the composite hinge sheet is thick, the transparent oversheet (transparent laser marking sheet) and the core sheet must be thinned. However, if the transparent oversheet is too thin, the laser-marked print density will be thin. Alternatively, if the core sheet becomes too thin, good printing cannot be performed when the fixed information is printed on the core sheet by a printing machine.
  • the above “e-Cover” type data page will be described as an example.
  • the total thickness is about 500 ⁇ m.
  • the sheet thickness should be about 80 ⁇ m
  • the core sheet thickness should be about 120 ⁇ m
  • the hinge sheet thickness should be about 120 ⁇ m.
  • the thickness of the hinge sheet may be about 200 ⁇ m.
  • an “e-Card” type data page will be described as an example.
  • the transparent oversheet transparent laser marking sheet
  • core sheet / inlet or “inlay”
  • hinge sheet / core sheet / transparent oversheet transparent laser marking sheet
  • transparent oversheet transparent laser marking sheet
  • the inlet thickness is about 400 ⁇ m
  • the thickness of the transparent oversheet must be about 60 ⁇ m
  • the core sheet thickness should be about 100 ⁇ m
  • the hinge sheet thickness should be about 120 ⁇ m.
  • one end of the composite hinge sheet has an overhanging portion that is 5 to 100 mm longer than the transparent oversheet and the core sheet. This is because it is easy to assemble the electronic passport by forming the overhanging portion on the composite hinge sheet.
  • the “overhang portion” refers to a portion of one end in the longitudinal direction of the composite hinge sheet that is longer than the transparent oversheet and the core sheet. Further, the “overhang portion” is for assembling to the electronic passport by sewing or bonding, or by sewing and bonding.
  • an overhang portion 29 in which one end of the composite hinge sheet 10 is formed longer than the transparent oversheets 13 and 23 and the core sheets 15 and 25 in a predetermined range. Can do.
  • the overhang portion 29 is formed, for example, the sewing binding portion 27 can easily perform sewing binding and can be easily assembled to the electronic passport.
  • projection part 29 is determined by the sewing binding method or adhesion workability, or the sewing binding method and adhesion workability. Furthermore, the length of the overhang portion 29 is preferably determined by the strength and adhesive strength of the sewing binding portion 27.
  • the dimension of the overhanging portion is preferably 5 to 100 mm, more preferably 5 mm. It is ⁇ 50 mm, more preferably 5 to 20 mm.
  • the laser marking multilayer sheet for electronic passports of the present invention is a laser marking multilayer sheet for electronic passports using the composite hinge sheet described so far.
  • it is a laser marking multilayer sheet for electronic passports, which basically has a structure in which five layers of transparent oversheet / core sheet / composite hinge sheet / core sheet / transparent oversheet are laminated.
  • transparent oversheet is a transparent laser marking sheet disposed on the outermost side in a transparent laser marking multilayer sheet for electronic passports. That is, it is a sheet on which information such as characters and figures is printed by laser marking. That is, the transparent oversheet is used as a data page. Furthermore, in this embodiment, the transparent oversheet is configured as (1) a single layer sheet, (2) a multilayer sheet 1, or (3) a multilayer sheet 2.
  • the single-layer sheet is configured as a single-layer sheet composed of a polycarbonate resin and a transparent polycarbonate resin composition containing a laser light energy absorber.
  • the multilayer sheet 1 is configured as a multilayer sheet having a skin layer and a core layer. Furthermore, the skin layers which are both outermost layers are made of a transparent thermoplastic resin composition containing an amorphous polyester resin having a glass transition temperature of 80 ° C. or higher. And the said core layer is comprised as a sheet
  • the multilayer sheet 2 is configured as a multilayer sheet having a skin layer and a core layer. Furthermore, the skin layers, which are both outermost layers, are made of polycarbonate resin. And the said core layer is comprised as a sheet
  • the “core sheet” in the above basic configuration is made of a polycarbonate resin composition including a polycarbonate resin and a colorant.
  • This “core sheet” is referred to as a colored core single layer sheet (or “PC core sheet”).
  • the “core sheet” in the above basic configuration is configured as a multilayer sheet having a skin layer and a core layer.
  • the skin layers which are both outermost layers are made of a thermoplastic resin composition containing an amorphous polyester resin having a glass transition temperature of 80 ° C. or higher.
  • the core layer is made of a thermoplastic resin containing a polycarbonate resin.
  • at least one of the skin layer and the core layer contains a colorant.
  • This “core sheet” is referred to as a colored core multilayer sheet (or “a three-layer core sheet composed of“ PETG / PC / PETG ”)).
  • the laser marking multilayer sheet for electronic passports has excellent tear strength, tensile strength, temporal stability, sharpness, and the like.
  • this laser marking multilayer sheet for electronic passport is bound or adhered to the electronic passport cover or back cover, or is bonded to the electronic passport.
  • the hinge portion of the electronic passport has excellent tear strength and tensile strength. That is, the composite hinge sheet that forms the hinge portion of the electronic passport can be reliably prevented from being torn off from the passport body.
  • the electronic passport does not lose flexibility, has sufficient strength against repeated bending, and has excellent temporal stability such as light resistance during actual use.
  • the image or the like marked on the transparent oversheet has a further improved contrast ratio and excellent sharpness. Therefore, fixed information can be printed on one side (transparent oversheet side) of the core sheet before the five sheets having the above basic configuration are stacked. Furthermore, personal information can be laser-marked on the transparent oversheet before laminating the five sheets having the above basic configuration. Accordingly, different fixed information and personal information, or the same fixed information and personal information can be printed on both sides of a so-called “data page” and can be drawn by laser marking.
  • the basic structure of the laser marking multilayer sheet for electronic passports of this invention consists of five layers as mentioned above, the structure and material can be variously selected within the scope of the present invention. Specific configurations and materials are exemplified below, but are not limited thereto.
  • the structure that does not include the inlet is as follows: (1) Transparent oversheet / PC core sheet / composite hinge sheet / PC core sheet / PC core sheet / PC core sheet / PC core sheet / PC core sheet / PC core sheet / PC core sheet / PC core sheet / A transparent oversheet composed of “PC single layer” or “PC / PC / PC three layers” may be laminated to form a laser marking multilayer sheet for electronic passports.
  • a laser marking multilayer sheet for electronic passports may be formed by laminating oversheets.
  • a laser sheet multilayer sheet for electronic passports may be formed by laminating a core sheet composed of “3 layers” and a transparent oversheet composed of three layers “PETG / PC / PETG”.
  • the same material as the oversheet (laser marking prescription or non-prescription) is formed on the transparent oversheet.
  • a layer having a layer structure formed by forming a protective layer is laminated.
  • PETG polymer alloy composed of “PETG” and “PC”, and the like can be used.
  • the configuration including the inlet includes a configuration in which the inlet is interposed above or below the hinge sheet in the layer configuration of the above (1) to (5). Can do.
  • various resins such as PETG and PC as described above are used.
  • FIG. 9 shows an electronic passport having the layer structure of “(1) transparent oversheet consisting of PC single layer / PC core sheet / composite hinge sheet / PC core sheet / PC single layer transparent oversheet”.
  • Laser marking multilayer sheet 11 (11A) is shown.
  • reference numeral 13 is a transparent oversheet
  • reference numeral 15 is a core sheet
  • reference numeral 10 is a composite hinge sheet.
  • FIG. 10 shows the core sheet / composite hinge sheet / “PETG / PC / PETG” composed of three layers of “transparent oversheet consisting of PC single layer /“ PETG / PC / PETG ”in (2) above.
  • a laser marking multilayer sheet 11 (11B) for electronic passports having a layer structure of “three-layer core sheet composed of three layers / transparent oversheet composed of PC single layer” is shown.
  • reference numeral 13 is a transparent oversheet
  • reference numeral 25 is a three-layer core sheet having a core layer 25b sandwiched between both outermost skin layers 25a
  • reference numeral 10 is a composite hinge sheet.
  • FIG. 11 shows a transparent oversheet / “PETG / PC / composed of three layers of“ PC / PC / PC ”or“ PETG / PC / PETG ”in (2) or (4) above.
  • Core sheet composed of 3 layers of “PETG” / composite hinge sheet / core sheet composed of 3 layers of “PETG / PC / PETG” / “PC / PC / PC” or “PETG / PC / PETG”
  • a laser marking multilayer sheet 11 (11C) for an electronic passport having a layer configuration consisting of “a transparent oversheet composed of three layers” is shown.
  • reference numeral 23 denotes a transparent oversheet, which is a transparent oversheet having a three-layer structure having a core layer 23b sandwiched between both outermost skin layers 23a.
  • Reference numerals 10 and 25 are the same as those in FIG.
  • seat for electronic passports of this invention is a laser marking sheet comprised from a single layer as mentioned above.
  • the transparent oversheet is a laser marking sheet composed of a skin layer and a core layer and having a multilayer structure of at least three layers, a so-called transparent laser marking multilayer sheet.
  • the single-layer sheet is formed from a polycarbonate resin and a transparent polycarbonate resin composition containing a laser light energy absorber.
  • the polycarbonate resin used here is not particularly limited in its production method, polymerization degree, etc., but those having a melt volume rate (melt flow characteristic) of 4 to 20 can be preferably used. If the melt volume rate is less than 4, it is meaningful in that the toughness (toughness) of the sheet is improved, but since the formability is inferior, there is a possibility that actual use may be hindered. On the other hand, if the melt volume rate exceeds 20, the toughness of the sheet may be inferior.
  • the transparent oversheet with a transparent resin layer made of polycarbonate resin, so-called “bulk” or “void (microscopic cavity)” due to foaming of the printed part (marking part) by laser light energy irradiation. Can be suppressed. Furthermore, the abrasion resistance of the marking part by laser light energy irradiation can be improved.
  • any resin that does not inhibit the transparency of the polycarbonate resin such as a filler, can be used without particular limitation.
  • a polymer blend of a general-purpose polycarbonate resin and a special polycarbonate resin is preferable.
  • a polymer blend of a polycarbonate resin and a polyarylate resin is preferable.
  • examples of the special polycarbonate resin include a graft copolymer having a main chain made of a polycarbonate resin and having a polystyrene skeleton or a modified acrylonitrile-styrene copolymer skeleton in the side chain.
  • a transparent oversheet when a transparent oversheet is comprised as a single layer sheet, it is preferable that this single layer sheet contains a laser light energy absorber, but this point will be described later.
  • the thickness of the transparent oversheet (as a single-layer structure) as the above-described single-layer sheet is not particularly limited, but a preferable range is that the thickness is formed in a predetermined range described later. is there.
  • Multilayer sheet 1 and multilayer sheet 2 are composed of “at least three layers composed of a skin layer and a core layer. It is preferably configured as a transparent oversheet having a structure.
  • the “three-layer sheet” means “at least three layers” and is not limited to a sheet having a three-layer structure.
  • the term “three-layer sheet” is for convenience of explanation, and the term “three-layer sheet” here refers to “a multilayer sheet composed of at least three layers or more” "Means. Therefore, it is not intended to limit the sheet to “three layers”. That is, if it consists of 3 layers or more, even if it consists of 5 layers, it consists of 7 layers, or it forms from the odd number layer beyond it, it is contained in the said transparent oversheet.
  • the skin layer of the transparent oversheet described later is arranged at the outermost position of the transparent oversheet configured by the multilayer structure. Is done. And it distributes on both surfaces of a transparent oversheet. Further, it is necessary that the core layer is disposed between the skin layers (between).
  • the thickness of the skin layer of the transparent oversheet having a multilayer structure is not particularly limited, but it is more preferable that the thickness is formed in a predetermined range described later.
  • the transparent oversheet is composed of the above-mentioned “odd number of more layers”, if it has a multi-layer structure, the layer thickness per layer of the skin layer and the core layer to be arranged becomes too thin. Therefore, there is a possibility that a so-called mold stick is generated in the hot press process at the time of lamination. Accordingly, a transparent oversheet composed of 5 layers is more preferable, and 3 layers are more preferable.
  • the “three-layer sheet” is an expression for showing a state after the three layers of the skin layer and the core layer are laminated, and does not limit the lamination method.
  • the transparent oversheet is configured as a sheet having a “at least three layers” structure including a skin layer and a core layer
  • the transparent oversheet is integrally laminated by, for example, melt extrusion.
  • melt extrusion it is not limited to this.
  • the reason why the transparent oversheet in the present embodiment is composed of odd layers as described above is that a multilayer sheet composed of even layers always has the same configuration as a transparent oversheet composed of odd layers.
  • a multilayer sheet composed of even layers always has the same configuration as a transparent oversheet composed of odd layers.
  • the arrangement of layers such as skin layer (PETG) / core layer (PC) / core layer (PC) / skin layer (PETG), or skin layer (PC) / Arrangement of layers such as core layer (PC) / core layer (PC) / skin layer (PC).
  • a layer arrangement of skin layer (PETG) / core layer (PC) / skin layer (PETG) is made.
  • a layer arrangement of skin layer (PC) / core layer (PC) / skin layer (PC) is made. That is, two skin layers are disposed on the outermost sides of one and the other, and one core layer is disposed so as to be sandwiched between the two skin layers to form a transparent oversheet.
  • a transparent oversheet composed of five layers As an example, the arrangement of layers such as skin layer (PETG) / core layer (PC) / skin layer (PETG) / core layer (PC) / skin layer (PETG) Is made.
  • an arrangement of layers such as skin layer (PC) / core layer (PC) / skin layer (PC) / core layer (PC) / skin layer (PC) is performed.
  • two skin layers may be arranged on the outermost sides of one and the other, and the skin layer and the core layer may be alternately arranged to form a transparent oversheet.
  • a transparent oversheet consisting of a single layer consisting of only the core layer
  • it has sufficient laser colorability and can achieve the effects of the present invention.
  • it is configured as a transparent oversheet (multilayer sheet 1) having a multilayer structure of skin layer (PETG) / core layer (PC) / skin layer (PETG) as described above.
  • a transparent oversheet multilayer sheet 2 having a multilayer structure of skin layer (PC) / core layer (PC) / skin layer (PC).
  • the laser beam energy is irradiated at a higher power than the transparent oversheet formed as a single-layer sheet with only the core layer, and marking is performed.
  • the density of the part can be increased.
  • the occurrence of so-called “swelling” and “void” due to foaming of the marking portion of the core layer can be suppressed, and the surface smoothness can be maintained.
  • the skin layer is laminated on the upper layer of the marking portion of the core layer, a synergistic effect that the wear resistance of the marking portion is further improved as compared with the case without the skin layer can be achieved. .
  • the multilayer sheet 1 has a skin layer and a core layer, and the skin layer which is both outermost layers is made of a transparent thermoplastic resin composition containing an amorphous polyester resin having a glass transition temperature of 80 ° C. or higher, and the core
  • the layer is configured as a transparent oversheet made of a transparent polycarbonate resin composition containing a polycarbonate resin and a laser light energy absorber.
  • Skin layer in multilayer sheet 1 When a skin layer is formed on the multilayer sheet 1, that is, when the multilayer sheet is composed of a multilayer structure as a “three-layer structure”, the skin layer is disposed outside the multilayer sheet (three-layer sheet). It is configured as both outermost layers. That is, this skin layer plays a role as a surface layer (both outermost layers) of the multilayer sheet (three-layer sheet), which is arranged so as to be sandwiched from both end surfaces (outside) of the core layer in the multilayer sheet described later. Yes.
  • the skin layer is easy to handle because it is made of a transparent thermoplastic resin composition containing an amorphous polyester resin having a glass transition temperature of 80 ° C. or higher. Furthermore, since the layer is formed from such a material, the skin layer is excellent in tear strength, bending strength, flexibility, dimensional accuracy, and the like. On the other hand, if the glass transition temperature of the amorphous polyester resin is less than 80 ° C., the skin layer made of such an amorphous polyester resin may have a sticky feeling and may be difficult to handle. Furthermore, the skin layer is likely to be deformed and may not be practically used. In addition, the creep properties at a relatively high temperature are also inferior, and the tear strength, bending strength, flexibility, dimensional accuracy, and the like may be inferior.
  • the glass transition temperature can be measured, for example, according to the differential scanning calorimetry (DSC method) defined in ASTM D3418-82.
  • an amorphous aromatic polyester resin is preferable, and a copolyester resin is more preferable.
  • the aromatic polyester resin refers to a dehydration condensate of an aromatic dicarboxylic acid and a diol.
  • the substantially amorphous aromatic polyester resin used in the present invention has a particularly low crystallinity among the aromatic polyester resins. Those are preferred. These do not cause white turbidity due to crystallization or decrease in fusing property even if heat molding is frequently performed with a hot press or the like.
  • polyester resin as described above include a dicarboxylic acid unit mainly composed of terephthalic acid units, an ethylene glycol unit (I), and a glycol unit mainly composed of 1,4-cyclohexanedimethanol unit (II).
  • the reason for adjusting the component amounts of ethylene glycol and 1,4-cyclohexanedimethanol contained in this copolymer polyester resin is that the amount of substitution of the ethylene glycol component in the copolymer polyester resin is 10 mol%. This is because a resin obtained with less than the above is not sufficiently amorphous, and recrystallization proceeds in the cooling step after heat fusion, resulting in poor heat fusion. Moreover, it is because the resin obtained exceeding 70 mol% is not sufficiently amorphous, and recrystallization proceeds in the cooling step after heat fusion, resulting in poor heat fusion.
  • the resin obtained by adjusting the component amounts of ethylene glycol and 1,4-cyclohexanedimethanol becomes sufficiently amorphous, and is excellent in terms of heat fusibility. Therefore, it can be said to be a preferable resin.
  • copolyester resin examples include a substantially non-crystalline aromatic polyester resin (abbreviated as “PETG”) in which about 30 mol% of the ethylene glycol component in polyethylene terephthalate is substituted with 1,4-cyclohexanedimethanol. "(Trade name” Easter Copolyester ", manufactured by Eastman Chemical Co., Ltd.)) is commercially available.
  • PETG substantially non-crystalline aromatic polyester resin
  • synthetic resins other than amorphous polyester resin can be used as long as they do not impair the transparency of the skin layer and the strength of the transparent oversheet comprising the skin layer and the core layer. , Modifiers, other additives, and the like.
  • Core layer in multilayer sheet 1 As described above, when the transparent oversheet is composed of a three-layer sheet and the skin layer is formed as the outermost layer, the core layer in the multilayer sheet 1 is arranged at the center of the three-layer sheet. Configured as a layer. That is, when a core layer is formed from a three-layer sheet, the core layer is formed as a core layer of the three-layer sheet so as to be sandwiched between two skin layers disposed on the outermost side.
  • the core layer is formed from a transparent polycarbonate resin composition comprising a polycarbonate resin and a laser light energy absorber.
  • the polycarbonate resin used here is not particularly limited in its production method and degree of polymerization, but those having a melt volume rate (melt flow characteristic) of 4 to 20 can be preferably used. If the melt volume rate is less than 4, it is meaningful in that the toughness (toughness) of the sheet is improved, but since the formability is inferior, there is a possibility that actual use may be hindered. On the other hand, if the melt volume rate exceeds 20, the sheet may have poor toughness.
  • the transparent laser marking sheet by forming the transparent laser marking sheet with a transparent resin layer made of polycarbonate resin, so-called “blowing” and “void” due to foaming of the marking portion due to irradiation with laser light energy can be suppressed. Furthermore, the abrasion resistance of the marking part by laser light energy irradiation can be improved.
  • any resin or filler that does not impair the transparency of the polycarbonate resin can be blended and added to the core layer without any particular limitation.
  • a polymer blend of a general-purpose polycarbonate resin and a special polycarbonate resin is preferred for the purpose of improving scratch resistance or improving heat resistance.
  • a polymer blend of polycarbonate resin and polyarylate resin is preferable.
  • the special polycarbonate resin examples include a graft copolymer having a main chain made of a polycarbonate resin and a side chain having a polystyrene skeleton or a modified acrylonitrile-styrene copolymer skeleton.
  • a laser beam energy absorber is included in the core layer of the multilayer sheet 1, this point will be described later.
  • the multilayer sheet 2 has a skin layer and a core layer, the outermost skin layer is made of a polycarbonate resin, and the core layer contains a thermoplastic polycarbonate resin and a laser light energy absorber. It is configured as a transparent oversheet consisting of objects.
  • Skin layer in the multilayer sheet 2 When the multilayer sheet 2 has a multilayer structure as a “three-layer structure” as in the multilayer sheet 1, the skin layers are both outermost layers arranged outside the multilayer sheet (three-layer sheet). Configured as That is, this skin layer plays a role as a surface layer (both outermost layers) of the multilayer sheet (three-layer sheet), which is arranged so as to be sandwiched from both end surfaces (outside) of the core layer in the multilayer sheet described later. Yes.
  • the skin layer in the multilayer sheet 2 is preferably formed from a polycarbonate resin (PC), particularly a transparent resin layer mainly composed of a transparent polycarbonate resin.
  • PC polycarbonate resin
  • the polycarbonate resin to be used is not particularly limited in production method, molecular weight and the like, but those having a melt volume rate of 4 to 20 can be suitably used. If the melt volume rate is less than 4, it is meaningful in that the toughness of the sheet is improved, but the molding processability is inferior, so that there is a possibility that actual use may be hindered. On the other hand, if the melt volume rate exceeds 20, the toughness of the sheet may be inferior.
  • the skin layer by forming the skin layer from a transparent resin layer mainly composed of polycarbonate resin (PC), it is possible to suppress so-called “fluff” and “void” due to foaming of the marking portion of the core layer by laser light irradiation. . Furthermore, the abrasion resistance of the marking part by laser light energy irradiation can be improved.
  • PC polycarbonate resin
  • the skin layer has high transparency, and any resin or filler that does not impair the transparency of the polycarbonate resin can be blended and added without particular limitation.
  • a polymer blend of a general-purpose polycarbonate resin and a special polycarbonate resin is preferred for the purpose of improving the scratch resistance of the skin layer or improving the heat resistance.
  • a polymer blend of a polycarbonate resin and a polyarylate resin is preferable.
  • the special polycarbonate resin examples include a graft copolymer having a main chain made of a polycarbonate resin and a side chain having a polystyrene skeleton or a modified acrylonitrile-styrene copolymer skeleton.
  • Core layer in multilayer sheet 2 When the skin layer is formed as the outermost layer, the core layer in the multilayer sheet 2 is configured as a so-called core layer disposed at the center of the three-layer sheet. That is, in the case of a three-layer sheet, the core layer is formed as a core layer of the three-layer sheet so as to be sandwiched between two skin layers disposed on the outermost side.
  • the core layer of the multilayer sheet 2 is formed of a transparent polycarbonate resin composition composed of a polycarbonate resin and a laser light energy absorber, like the multilayer sheet 1. Therefore, please refer to the description of the core layer in the multilayer sheet 1.
  • any resin or filler that does not impair the transparency of the polycarbonate resin can be used without particular limitation.
  • a polymer blend of a general-purpose polycarbonate resin and a special polycarbonate resin is preferred for the purpose of improving scratch resistance or improving heat resistance.
  • a polymer blend of polycarbonate resin and polyarylate resin is preferable.
  • the special polycarbonate resin examples include a graft copolymer having a main chain made of a polycarbonate resin and a side chain having a polystyrene skeleton or a modified acrylonitrile-styrene copolymer skeleton.
  • the core layer contains a laser light energy absorber
  • the laser light energy absorber will be described later.
  • the total thickness (total thickness) of the transparent oversheet is preferably 50 to 200 ⁇ m for any of the single-layer sheet, the multilayer sheet 1 and the multilayer sheet 2. If the total thickness of the transparent oversheet is less than 50 ⁇ m, the laser marking property may be insufficient. Further, in the case of the multilayer sheet 1, a so-called mold stick problem that the multilayer sheet sticks to the mold is likely to occur at the time of heat fusion in the lamination process of the multilayer sheet. In order to remove such trouble, it is necessary to control the heat fusion temperature, the press pressure at the time of heat fusion, the heat fusion time, and the like. However, this control becomes complicated and tends to hinder the molding process.
  • the total thickness of the transparent oversheet exceeds 200 ⁇ m, for example, when the laser marking laminate for electronic passport is laminated and formed using the transparent oversheet exceeding 200 ⁇ m and the core sheet described later, The total maximum thickness of a typical electronic passport will be exceeded. Therefore, there arises a problem that the practicality tends to be poor.
  • the total thickness of the composite hinge sheet is defined, if the thickness of the woven sheet is too thin, the effect of providing the woven sheet on the composite hinge sheet, that is, the woven sheet is inserted. The effect will be reduced. Furthermore, if the thickness of the woven sheet is too thick, the total thickness of the composite sheet is increased, and the total thickness regulation of the laser marking laminate for electronic passports is not satisfied.
  • an “e-Card” type data page of an electronic passport has an IC-chip and an antenna arranged therein. Therefore, the total thickness of the data page of the “e-Card” type is about 800 ⁇ m, similar to the IC card. Further, the “e-Cover” type data page of the electronic passport does not have an IC-chip and an antenna. Therefore, the total thickness of the data page of the “e-Cover” type is mainly about 400 to 600 ⁇ m.
  • the total thickness is about 500 ⁇ m.
  • the thickness of the oversheet should be about 80 ⁇ m
  • the thickness of the core sheet should be about 120 ⁇ m
  • the thickness of the transparent oversheet should be about 120 ⁇ m.
  • the thickness of the transparent oversheet may be about 120 ⁇ m.
  • the basic configuration is transparent oversheet / core sheet / inlet (or “inlay”) / hinge sheet / core sheet / transparent oversheet.
  • the inlet thickness is about 400 ⁇ m
  • the oversheet thickness is about 60 ⁇ m
  • the core sheet thickness is about 100 ⁇ m
  • the hinge sheet thickness is about 120 ⁇ m. There must be.
  • the transparent oversheet is a multilayer sheet (so-called three-layer sheet) composed of a skin layer and a core layer, and in the case of the multilayer sheet 1, the total thickness (total thickness) is 50 to 200 ⁇ m.
  • the ratio of the thickness of the core layer to the total sheet thickness of the multilayer sheet 1 is preferably 30 to 85%.
  • the transparent oversheet is a multilayer sheet (so-called three-layer sheet) composed of a skin layer and a core layer, and in the case of the multilayer sheet 2, the total thickness (total thickness) of the multilayer sheet 2 is In addition to being 50 to 200 ⁇ m, the ratio of the thickness of the core layer to the total sheet thickness of the multilayer sheet is preferably 30 to 85%. If the thickness of the core layer is less than 30%, the laser marking property may be deteriorated, which is not preferable. If it exceeds 85%, the skin layer will be too thin, and when laser energy is irradiated at high power, the laser energy absorber mixed in the core layer will absorb the laser energy and convert it into heat. As a result, high heat is generated.
  • the thickness of the core layer is less than 30%, the laser marking property may be deteriorated, which is not preferable. If it exceeds 85%, the skin layer will be too thin, and when laser energy is irradiated at high power, the laser energy absorber mixed in the core layer will
  • the effect of suppressing the so-called “fluff generation” and “void generation” in the portion irradiated with the laser beam energy may be poor, which is not preferable.
  • the abrasion resistance of the marking portion is not sufficient as compared with the case where the thickness of the skin layer is within the above desired range. It is not preferable.
  • the ratio of the thickness of the core layer in all the sheets is 40 to 85%.
  • the core layer thickness ratio is a major factor in laser color development (contrast).
  • the thickness of the core layer is the main factor for laser marking properties in both the three-layer structure of “PC / PC (compatible with laser mark) / PC” and the three-layer structure of “PETG / PC (compatible with laser mark) / PETG”.
  • the core layer is thicker.
  • the thinner one is preferable.
  • the thickness ratio of the core layer of the transparent oversheet composed of three layers is more preferably 40 to 85%.
  • the skin layer becomes too thin, so in the two-type three-layer coextrusion molding, it is difficult to control the thickness of the skin layer, and stably. It may be difficult to mold.
  • the transparent oversheet preferably has a total light transmittance of 70% or more, more preferably 85% or more.
  • a white sheet on which characters, figures, and the like are printed is appropriately referred to as a “printing unit”.
  • the non-printed portion of the transparent oversheet which is the outermost layer is irradiated with laser light energy to develop a black color.
  • total light transmittance is an index indicating the ratio of transmitted light among the light incident on the film or the like, and the total light transmittance when all the incident light is transmitted is 100%.
  • total light transmittance is a value measured in accordance with JIS-K7105 (light transmittance and total light reflectance). The total light transmittance can be measured using, for example, a haze meter (trade name: “NDH 2000”) manufactured by Nippon Denshoku Industries Co., Ltd., a spectrophotometer (trade name “EYE7000” manufactured by Macbeth Co., Ltd.), or the like.
  • the transparent laser marking sheet When the transparent laser marking sheet is configured as a single layer sheet, the transparent laser marking sheet contains 0.0005 parts of laser light energy absorber with respect to 100 parts by mass of the transparent resin mainly composed of polycarbonate resin. It is preferably contained in an amount of ⁇ 1 part by mass.
  • the core layer has a laser beam for 100 parts by mass of the transparent resin mainly composed of a polycarbonate resin.
  • the energy absorber is preferably contained in an amount of 0.0005 to 1 part by mass. Such a configuration is preferable because it is excellent in laser colorability when laser-marked, the contrast between the fabric color and the printed portion is increased, and clear characters, symbols, and images can be obtained.
  • the laser light energy absorber examples include at least one selected from the group consisting of carbon black, titanium black, metal oxide, metal sulfide, metal nitride, metal oxide, and metal carbonate. . More preferably, the laser light energy absorber is at least one or two selected from the group consisting of carbon black, titanium black, and metal oxide in the single layer sheet or in the core layer of the multilayer sheets 1 and 2. It contains more than seeds.
  • the average particle size of carbon black, titanium black, metal oxide, metal sulfide, metal nitride, metal oxide, and metal carbonate added to the multilayer sheet 2 is preferably less than 150 nm. More preferably, the carbon black, titanium black, metal oxide, metal sulfide, metal nitride, metal oxide, and metal carbonate added to the multilayer sheet 2 have an average particle size of less than 100 nm. Further, carbon black having an average particle diameter of 10 to 90 nm and dibutyl phthalate (DBT) oil absorption of 60 to 170 ml / 100 gr or the carbon black and titanium black or metal oxide having an average particle diameter of less than 150 nm are used in combination. Is preferred.
  • DBT dibutyl phthalate
  • the average particle size of carbon black, titanium black, metal oxide, metal sulfide, metal nitride, metal oxide, and metal carbonate exceeds 150 nm, the transparency of the sheet decreases or the surface of the sheet becomes large. Unevenness may occur, which is not preferable. Furthermore, if the average particle size of the carbon black is less than 10 nm, the laser color developability is deteriorated, and it is too fine to be difficult to handle. Further, when the DBT oil absorption is less than 60 ml / 100 gr, the dispersibility is poor, and when it exceeds 170 ml / 100 gr, the concealability is poor, which is not preferable.
  • the average particle diameter of titanium black, metal oxide, metal sulfide, metal nitride, metal oxide, and metal carbonate added to the multilayer sheet 1 is the same as that of the multilayer sheet 2 described above.
  • Carbon black having an average particle size of 10 to 90 nm and a dibutyl phthalate (DBT) oil absorption of 60 to 170 ml / 100 gr is preferably added to the multilayer sheet 1. If the average particle size of the carbon black is less than 10 nm, the laser colorability is lowered, and the handling is too fine. On the other hand, if it exceeds 90 nm, the transparency of the sheet may be lowered, or large irregularities may be generated on the sheet surface. Further, when the DBT oil absorption is less than 60 ml / 100 gr, the dispersibility is poor, and when it exceeds 170 ml / 100 gr, the concealability is poor, which is not preferable.
  • metal oxide added to the multilayer sheets 1 and 2 as the metal oxide added to the multilayer sheets 1 and 2, as the metal forming the oxide, zinc, magnesium, aluminum, iron, titanium, silicon, antimony, tin, copper, manganese, cobalt, vanadium, bismuth, Niobium, molybdenum, ruthenium, tungsten, palladium, silver, platinum and the like can be mentioned. Furthermore, ITO, ATO, AZO, etc. are mentioned as a composite metal oxide.
  • examples of the metal sulfide added to the multilayer sheets 1 and 2 include zinc sulfide and cadmium sulfide.
  • examples of the metal nitride include titanium nitride.
  • examples of the metal oxalate include magnesium oxalate and copper oxalate.
  • basic copper carbonate is mentioned as a metal carbonate.
  • carbon black, metal oxide, and composite metal oxide are preferably used, and each is used alone or in combination.
  • 0.0005 to 1 part by mass of carbon black is preferably added (blended) to the energy absorber to the multilayer sheet 2, and more preferably 0.0008 to 0.1 part by mass.
  • carbon black and at least one selected from metal oxides, metal sulfides, metal nitrides, metal oxides, and metal carbonates having an average particle diameter of less than 150 nm are used in combination,
  • the blending amount is more preferably 0.0005 to 1 part by mass, and most preferably 0.0008 to 0.5 part by mass.
  • the reason why the addition amount (blending amount) of the laser light energy absorber to the multilayer sheet 2 is adjusted to a desired amount is that the transparent oversheet is preferably transparent.
  • the transparent oversheet is preferably transparent.
  • it is used by laminating a transparent oversheet on a printed core sheet (sometimes referred to as “white sheet” as appropriate). Is done.
  • laser light energy is irradiated to the transparent oversheet of the part which has not given the printing part, black color is developed, and an image and a character are marked. In this way, it is often used in combination with the design in the printing section and the anti-counterfeit effect by laser marking.
  • the average particle diameter of the metal sulfide is at least less than 150 nm, preferably less than 100 nm.
  • the average particle diameter of the laser energy absorber added to the multilayer sheet 2 exceeds 150 nm, the transparency of the transparent oversheet may be lowered. Moreover, when the compounding quantity of these laser light energy absorbers exceeds 1 mass part, there exists a possibility that the transparency of a transparent oversheet may fall. Furthermore, there is a possibility that the amount of absorbed energy is excessive and the resin is deteriorated. As a result, sufficient contrast cannot be obtained. On the other hand, if the addition amount of the laser light energy absorber is less than 0.0005 parts by mass, there is a possibility that sufficient contrast cannot be obtained.
  • the addition amount of the laser light energy absorber exceeds 1 part by mass, not only the transparency of the transparent oversheet may be lowered but also abnormal heat generation may be caused. As a result, decomposition and foaming of the resin occur and desired laser marking cannot be performed.
  • 0.0001 to 3 parts by mass of carbon black is preferably added (mixed) to the laser light energy absorber to the multilayer sheet 1 as a transparent oversheet, more preferably 0.0001 to 1 part by mass. Part.
  • the blending amount of the mixture is 0.00. From 0001 to 6 parts by mass, more preferably from 0.0001 to 3 parts by mass. In this way, the amount of energy absorber added (mixed amount) is adjusted for the following reason. That is, the transparent oversheet is preferably transparent, and printing is often performed on the colored core sheet which is the lower layer of the transparent oversheet.
  • carbon black having a small average particle diameter is preferably used, and a mixture of carbon black and at least one selected from other metal oxides, metal sulfides, metal carbonates and metal silicates is used as a laser beam.
  • the average particle size of these metal oxides, metal sulfides, metal carbonates and metal silicates is at least less than 150 nm, preferably less than 100 nm, more preferably less than 50 nm.
  • the transparency of the transparent oversheet may be lowered. Further, if the blending amount of the laser light energy absorber exceeds 6 parts by mass, the transparency of the transparent oversheet may be lowered, and the amount of absorbed energy is excessively deteriorated, so that sufficient contrast cannot be obtained. There is a fear. On the other hand, if the addition amount of the laser light energy absorber is less than 0.0001 part by mass, sufficient contrast may not be obtained.
  • Lubricant, antioxidant, and anti-coloring agent it is preferable to make a single layer sheet or the multilayer sheets 1 and 2 contain a lubricant. Moreover, when comprised as the multilayer sheets 1 and 2 which consist of what is called a three-layer sheet, it is preferable to make a skin layer contain a lubricant. By containing a lubricant, it is possible to prevent fusion to the press plate at the time of hot pressing.
  • the transparent oversheet configured as a single-layer sheet or multilayer sheets 1 and 2, as necessary, at least one selected from an antioxidant and an anti-coloring agent, and an ultraviolet absorber and It is also preferable to contain at least one selected from light stabilizers.
  • the transparent oversheet is configured as a multilayer sheet 1 or 2 composed of a so-called three-layer sheet, at least one of the skin layer and the core layer is selected from an antioxidant and an anti-coloring agent as necessary. It is also preferable to contain at least one selected from at least one selected from ultraviolet absorbers and light stabilizers. At least one type (addition) selected from an antioxidant and an anti-coloring agent effectively acts on physical property reduction and hue stabilization due to molecular weight reduction during molding.
  • antioxidants and coloring inhibitors phenolic antioxidants and phosphite ester coloring inhibitors are used.
  • at least one addition (formulation) selected from ultraviolet absorbers and light stabilizers is effective in suppressing light deterioration resistance during storage of the transparent oversheet and during actual use of the electronic passport as the final product. To do.
  • phenolic antioxidants include, for example, ⁇ -tocopherol, butylhydroxytoluene, sinapir alcohol, vitamin E, n-octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate 3-5-di-t-butyl-4-hydroxytoluene; pentaerythrityl-tetrakis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], triethylene glycol-bis [3 -(3-t-butyl-5-methyl-4-hydroxyphenyl) propionate], 1,6-hexanediol-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], 2-tert-Butyl-6- (3′-tert-butyl-5′-methyl-2′-hydroxybenzyl -4-methylphenyl acrylate, 2,6-di-tert-butyl
  • n-octadecyl-3- (3,5-di-tert-butyl-hydroxyphenyl) propionate 1,3,5-trimethyl-2,4,6-tris (3,3) 5-di-tert-butyl-4-hydroxybenzyl) benzene, 1,3,5-tris (3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, tetrakis [3- (3,5- Di-tert-butyl-4-hydroxyphenyl) propionyloxymethyl] methane is preferred, and n-octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate is particularly preferred.
  • the said hindered phenolic antioxidant can be used individually or in combination of 2 or more types.
  • Examples of the phosphite ester coloration preventing agent include triphenyl phosphite, tris (nonylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl phosphite, didecyl monophenyl phosphite, dioctyl monophenyl.
  • Phosphite diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, 2,2-methylenebis (4,6-di-tert-butylphenyl) octyl phosphite, tris ( Diethylphenyl) phosphite, tris (di-iso-propylphenyl) phosphite, tris (di-n-butylphenyl) phosphite, tris (2,4-di-tert-butylphenol) Phosphite, tris (2,6-di-tert-butylphenyl) phosphite, distearyl pentaerythritol diphosphite, bis (2,4-di-tert-butylphenyl)
  • phosphite compounds those that react with dihydric phenols and have a cyclic structure can be used.
  • 2,2′-methylenebis (4,6-di-tert-butylphenyl) (2,4-di-tert-butylphenyl) phosphite 2,2′-methylenebis (4,6-di-tert-Butylphenyl) (2-tert-butyl-4-methylphenyl) phosphite
  • 2,2′-ethylidenebis (4-methyl-6-tert-butylphenyl) (2-tert-butyl-4-methylphenyl) phosphite and the like.
  • tris (2,4-di-tert-butylphenyl) phosphite is particularly preferable.
  • the phosphite ester coloration inhibitor may be used alone or in combination of two or more. Moreover, you may use together with a phenolic antioxidant.
  • Examples of the ultraviolet absorber include 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′, 5′-di-tert-amylphenyl) benzotriazole, 2 -(2'-hydroxy-3 ', 5'-bis ( ⁇ , ⁇ '-dimethylbenzyl) phenylbenzotriazole, 2,2'methylenebis [4- (1,1,3,3-tetramethylbutyl) -6 -(2H-benzotriazol-2-yl) phenol], condensation with methyl-3- [3-tert-butyl-5- (2H-benzotriazol-2-yl) -4-hydroxyphenylpropionate-polyethylene glycol Examples thereof include benzotriazole-based compounds represented by products.
  • examples of the ultraviolet absorber include 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxyphenol, 2- (4,6-bis (2,4 And hydroxyphenyltriazine compounds such as -dimethylphenyl) -1,3,5-triazin-2-yl) -5-hexyloxyphenol.
  • examples of the ultraviolet absorber include 2,2′-p-phenylenebis (3,1-benzoxazin-4-one) and 2,2′-m-phenylenebis (3,1-benzoxazine-4). -One), and cyclic imino ester compounds such as 2,2'-p, p'-diphenylenebis (3,1-benzoxazin-4-one).
  • Examples of the light stabilizer include bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, tetrakis (2 , 2,6,6-tetramethyl-4-piperidyl) -1,2,3,4-butanetetracarboxylate, tetrakis (1,2,2,6,6-pentamethyl-4-piperidyl) -1,2 , 3,4-Butanetetracarboxylate, poly ⁇ [6- (1,1,3,3-tetramethylbutyl) amino-1,3,5-triazine-2,4-diyl] [(2,2, 6,6-tetramethylpiperidyl) imino] hexamethylene [(2,2,6,6-tetramethylpiperidyl) imino] ⁇ , polymethylpropyl 3-oxy- [4- (2,2,6,6-tetra Methyl) pipette Hindered
  • lubricant examples include fatty acid esters, fatty acid amides, and fatty acid metal salts, and at least one lubricant selected from them is preferably added.
  • fatty acid ester lubricants include butyl stearate, cetyl palmitate, stearic acid monoglyceride, stearic acid diglyceride, stearic acid triglyceride, ester of montan wax acid, wax ester, dicarboxylic acid ester, complex ester, fatty acid amide type
  • lubricant include stearic acid amide and ethylene bisstearyl amide.
  • the fatty acid metal salt lubricant include calcium stearate, magnesium stearate, zinc stearate, aluminum stearate, barium stearate and the like.
  • the single-layer sheet as the transparent oversheet contains 0.01 to 3 parts by mass of a lubricant with respect to 100 parts by mass of the transparent thermoplastic resin, and at least one selected from an antioxidant and an anti-coloring agent.
  • the transparent oversheet is preferably comprised of 0.1 to 5 parts by weight of at least one selected from UV absorbers and light stabilizers.
  • the skin layer in the multilayer sheet 2 of the transparent oversheet contains 0.01 to 3 parts by mass of a lubricant with respect to 100 parts by mass of the transparent thermoplastic resin and 0.0005 to 1 of a laser beam energy absorber.
  • Transparent containing 0.1 to 5 parts by mass of at least one selected from mass parts, antioxidants and anti-coloring agents, and 0.1 to 5 parts by mass of at least one selected from ultraviolet absorbers and light stabilizers It is preferably configured as an oversheet.
  • the addition amount of the lubricant is preferably 0.01 to 3 parts by mass, more preferably 0.05 to 1.5 parts by mass, together with the single layer sheet and the multilayer sheets 1 and 2. If it is less than 0.01 mass part, there exists a possibility that it may fuse
  • At least one selected from an antioxidant and an anti-coloring agent is less than 0.1 parts by mass, the thermal oxidation reaction of the polycarbonate resin in the process of melting, extruding and molding, and the disadvantages such as thermal discoloration, Is likely to occur.
  • the amount exceeds 5 parts by mass problems such as bleeding of these additives tend to occur.
  • at least one selected from ultraviolet absorbers and light stabilizers is less than 0.1 parts by mass, the effect is poor, and problems such as light resistance deterioration and discoloration associated therewith are likely to occur.
  • it exceeds 5 parts by mass problems such as bleeding of these additives are likely to occur.
  • the core sheet is configured as a colored core single layer sheet composed of a polycarbonate resin and a polycarbonate resin composition containing a colorant.
  • the core sheet has a skin layer and a core layer, skin layers are formed on both outermost layers, and the multilayer sheet 1 is configured as a three-layer structure having a core layer between the skin layers.
  • the skin layer is made of a thermoplastic resin composition containing an amorphous polyester resin having a glass transition temperature of 80 ° C. or higher
  • the core layer of the core sheet is made of a transparent thermoplastic resin containing a polycarbonate resin.
  • At least one of the skin layer and the core layer of the core sheet is configured as a colored core multilayer sheet containing a colorant.
  • This core sheet is laminated and formed by, for example, melt extrusion molding.
  • the term “three-layer sheet” is used for convenience of explanation, and the term “three-layer sheet” means “a sheet composed of at least three layers”. Therefore, the present invention is not intended to be limited to a sheet composed of “three layers”. In other words, as long as it is composed of three or more layers, it is included in the core sheet even if it is composed of five layers, seven layers, or more odd layers.
  • the skin layer described later is disposed at the outermost position of the sheet composed of the multilayer structure. And it distribute
  • the thickness of the skin layer is not particularly limited, but it is more preferable that the skin layer is formed to have a thickness within a predetermined range described later.
  • the layer thickness per layer between the skin layer and the core layer to be arranged is thin. It becomes too much. In this case, there arises a problem that the heat-fusibility with the transparent oversheet is inferior. Therefore, it is preferable to have five layers, and more preferably three layers.
  • the core sheet is composed of odd layers as described above because a multilayer sheet composed of even layers always has the same structure as a core sheet composed of odd layers.
  • the layers are arranged such as skin layer (PETG) / core layer (PC) / core layer (PC) / skin layer (PETG). It is because it becomes the structure similar to a core sheet.
  • both one and the other are arranged so that a layer arrangement of skin layer (PETG) / core layer (PC) / skin layer (PETG) is made.
  • PETG skin layer
  • PC core layer
  • PETG skin layer
  • PETG skin layer
  • PC core layer
  • PETG skin layer
  • the total thickness (total thickness) of the three-layer sheet (core sheet) is 60 to 300 ⁇ m in total thickness, and the ratio of the thickness of the core layer to the total thickness of the core sheet The thickness ratio is preferably 30 to 85%.
  • the PETG layer which is the skin layer of the multilayer sheet, is inevitably thinned. Therefore, at the time of heat-sealing in the multilayer sheet laminating step, the heat-fusibility between the transparent oversheet (including both “single-layer sheet” and so-called “3-layer sheet”) laminated on the outermost layer and the core sheet It cannot be secured.
  • the overall thickness of the three-layer sheet exceeds 300 ⁇ m, the overall thickness is practical when a laser marking multilayer sheet for electronic passports is molded using the three-layer sheet exceeding 300 ⁇ m. It is beyond the range.
  • the so-called “data page” without an IC chip and an antenna has a total maximum thickness of 400 to 500 ⁇ m. 700 to 800 ⁇ m. Thus, since the total maximum thickness is exceeded, practicability is poor.
  • the core sheet preferably has a ratio of the thickness of the core layer to the total thickness of 30 to 85%. This is to ensure the concealability when printing on the core sheet, and to ensure the visibility and clarity of the marking portion. That is, if the thickness of the skin layer is too thin, it is not possible to ensure the heat-fusibility between the transparent oversheet laminated on the outermost layer and the core sheet at the time of heat-fusing in the core sheet laminating step. On the other hand, if the thickness of the skin layer is too large, the thickness of the core layer described later will inevitably become thin. Therefore, the concealability when printing on a multilayer sheet cannot be ensured.
  • the thickness of the entire three-layer sheet by setting the thickness of the entire three-layer sheet to a desired thickness, local characteristics such as the characteristics of the core sheet can be easily extracted. Furthermore, it becomes easy to draw out the characteristics of the laser marking multilayer sheet for electronic passports of this embodiment. Furthermore, not only the total thickness of the entire three-layer sheet, but also the ratio of the thickness of the skin layer and the core layer constituting the three-layer sheet in the three-layer sheet is set to the above-described desired ratio, thereby providing three layers. Combined with setting the thickness of the entire sheet within the desired range, the effects of the present invention can be further exhibited, such as easier to improve the contrast.
  • the fusion and concealment properties of the core sheet and the contrast with the marking part (of the transparent oversheet) are extremely important, such as whether the multilayer sheet can be put to practical use and productivity, and can meet market needs. Become an element. Therefore, the relationship between the total thickness of the entire three-layer sheet and the thicknesses of the skin layer and the core layer will be described in detail later.
  • core sheet or “sheet formed by stacking three layers” or the like indicates a state after a plurality of layers (or three layers) are stacked. This is an expression for the purpose, and does not limit the stacking method.
  • the core sheet constituting the data page is composed of (1) a single layer sheet and (2) a multilayer sheet 1 as described above.
  • examples of the core sheet composed of the “single layer sheet” of (1) include a core sheet having a single layer structure containing a colorant.
  • This core sheet having a single layer structure is, for example, a core sheet colored white or the like, and is referred to as a “colored core single layer sheet”.
  • a core sheet comprised from the "multilayer sheet 1" of said (2) it has a skin layer and a core layer
  • the core of a multilayer structure which contains a coloring agent in at least one layer of the said skin layer and a core layer A sheet can be mentioned.
  • the multilayer core sheet is, for example, a core sheet colored white or the like, and is referred to as a “colored core multilayer sheet”.
  • a core sheet When a core sheet is comprised as a single layer sheet, it is comprised as a colored core single layer sheet which consists of a polycarbonate resin composition containing a polycarbonate resin and a coloring agent.
  • the polycarbonate resin used here is not particularly limited in its production method and degree of polymerization, but those having a melt volume rate (melt flow characteristic) of 4 to 20 can be preferably used. If the melt volume rate is less than 4, it is meaningful in terms of improving the toughness (toughness) of the sheet, but the moldability may be inferior. Therefore, there is a possibility that the actual use may be hindered. On the other hand, if the melt volume rate exceeds 20, the sheet may have poor toughness.
  • the core sheet by forming the core sheet with a resin layer made of a polycarbonate resin, it is possible to suppress the occurrence of so-called “swelling” and “voids (microscopic cavities)” due to foaming of the marking portion by irradiation with laser light energy. Furthermore, the abrasion resistance of the marking part by laser light energy irradiation can be improved.
  • a filler or the like may be blended.
  • a polymer blend of general-purpose polycarbonate resin and special polycarbonate resin is preferred for the purpose of improving scratch resistance or improving heat resistance.
  • a polymer blend of polycarbonate resin and polyarylate resin is preferable.
  • the special polycarbonate resin examples include a graft copolymer having a main chain made of a polycarbonate resin and a side chain having a polystyrene skeleton or a modified acrylonitrile-styrene copolymer skeleton.
  • the skin layer of the core sheet is configured as both outermost layers disposed outside the three-layer sheet. That is, this skin layer plays a role as a surface layer (both outermost layers) of a three-layer sheet disposed so as to be sandwiched from both end surfaces (outside) of the core layer in the core sheet described later.
  • the skin layer is preferably made of a transparent thermoplastic resin composition containing an amorphous polyester resin having a glass transition temperature of 80 ° C. or higher. That is, in the skin layer in the multilayer sheet 1, the amorphous polyester resin preferably has a glass transition temperature (Tg) of 80 ° C. or higher.
  • Tg glass transition temperature
  • the fixed information may be printed on one side of the skin layer by UV offset printing or the like.
  • the transparent oversheet / the core sheet (white core sheet on which information is printed) / inlet (IC-chip and antenna are arranged) / composite hinge sheet / the core sheet (information is printed) White core sheet) / a laminate of 6 layers of the transparent oversheet.
  • the transparent oversheet is arrange
  • an adhesive (Vernish) is applied on the white core sheet on which the above information is printed before heat lamination.
  • the adhesive is applied using a silk screen printer or the like.
  • the skin layer is greatly deformed, resulting in a problem of dimensional accuracy. Therefore, when a skin layer of a colored core multilayer sheet (white core sheet) is formed of an amorphous polyester resin having a Tg of 80 ° C. or higher, the skin layer is not softened.
  • the glass transition temperature can be measured according to the differential scanning calorimetry (DSC method) prescribed in ASTM D3418-82, for example, as described above.
  • the amorphous polyester resin used for the core sheet is preferably an amorphous aromatic polyester resin, more preferably a copolyester resin.
  • the amorphous polyester resin and the copolymer polyester resin are the same as the amorphous polyester resin and copolymer polyester resin used for the multilayer sheet 1. Therefore, please refer to the description of the amorphous polyester resin and the copolyester resin in the multilayer sheet 1.
  • the thicknesses of the skin layers are the same. If the core sheet is composed of skin layers having different thicknesses, it is not preferable because it causes variations in heat-fusability between the outermost transparent oversheet and the core sheet at the time of heat-sealing in the core sheet laminating step. In addition, the laminated body (laser marking multilayer sheet for electronic passport) after hot pressing may be warped, which is not preferable. Also, for example, when the core sheet is composed of three layers of skin layer (PETG) / core layer (PC) / skin layer (PETG), and the thickness of the core layer is 30 to 85% The skin layer is 15% or more and less than 70% on both sides.
  • PETG skin layer
  • PC core layer
  • PETG skin layer
  • the thickness of the skin layer is too thin, the heat-fusibility is lowered.
  • the thickness of the skin layer is too thick, the thickness of the core layer described later will inevitably become thin.
  • the colorant is blended only in the core layer, it is only necessary to feed the resin containing the colorant into only one extruder, so that the extrusion is more effective than the case where the colorant is blended in the skin layer and the core layer.
  • the machine can be cleaned in half as much as it would be.
  • the concealability when printing partially or entirely on the core sheet is insufficient. Further, when a colorant is blended in the skin layer and the core layer, the above-described concealing problem does not occur.
  • the total thickness (total thickness) of the three-layer sheet (core sheet) and the ratio of the thickness of the core layer to the total thickness be formed within the desired range as described above. .
  • the core layer of the core sheet is configured as a so-called core layer disposed in the center of the three-layer sheet. That is, the core layer is formed as a core layer of a three-layer sheet so as to be sandwiched between two skin layers disposed on the outermost side.
  • the thickness of the core layer is preferably formed so that the ratio of the thickness in all sheets is 30 to 85%. More preferably, it is 40% or more and less than 80%. If the thickness ratio of the core layer exceeds 85%, the total thickness of the core sheet is as thin as 100 to 300 ⁇ m, so that the skin layer is relatively thin.
  • the thickness ratio of the core layer is less than 30%, there is a possibility that the concealability when printing on the core sheet cannot be ensured. Furthermore, the contrast when black marking is performed on the transparent oversheet which is the outermost layer by laser light energy irradiation may not be ensured. Moreover, the visibility of a marking part and a clearness may not be ensured.
  • the material (raw material) constituting the core layer is made of a thermoplastic resin containing a polycarbonate resin, and a transparent polycarbonate resin is particularly used.
  • the polycarbonate resin to be used is not particularly limited in its production method, polymerization degree, etc., but those having a melt volume rate of 4 to 20 can be suitably used. If the melt volume rate is less than 4, it is meaningful in that the toughness of the sheet is improved, but the molding processability is inferior, so that there is a possibility that actual use may be hindered. On the other hand, if the melt volume rate exceeds 20, the toughness of the sheet may be inferior.
  • the core sheet configured as a colored core single-layer sheet contains 1 part by mass or more of at least one resin colorant such as a dye or a pigment with respect to 100 parts by mass of the polycarbonate resin. It is that you are.
  • the core sheet is configured as a colored core multilayer sheet, 100 parts by mass of the polyester resin or 100 parts by mass of the polycarbonate resin are used for at least one of the skin layer of the core sheet and the core layer.
  • 1 part by mass or more of at least one kind of resin colorants such as dyes and pigments is contained.
  • Examples of the colorant for the resin such as the coloring dye and the pigment include a white pigment, a yellow pigment, a red pigment, and a blue pigment.
  • white pigments include titanium oxide, barium oxide, and zinc oxide.
  • Examples of yellow pigments include iron oxide and titanium yellow.
  • Examples of red pigments include iron oxide.
  • Examples of blue pigments include cobalt blue ultramarine blue. However, it is preferable to use a white pigment in order to improve contrast.
  • a resin colorant such as a white dye or a pigment, which is conspicuous in contrast, is added.
  • Lubricant, antioxidant, and anti-coloring agent Furthermore, when the said core sheet is comprised as a colored core single layer sheet, it is preferable that 1 type chosen from antioxidant and a coloring inhibitor is included. Similarly, when the said core sheet is comprised as a colored core multilayer sheet, at least 1 layer of the skin layer of a core sheet and a core layer may contain 1 type chosen from antioxidant and a coloring inhibitor. preferable. By doing in this way, it can be made to act effectively for the physical-property reduction and hue stabilization by the molecular weight fall at the time of a shaping
  • At least one selected from an antioxidant and an anti-coloring agent with respect to 100 parts by mass of the thermoplastic resin in the colored core monolayer sheet and in at least one layer of the core layer and the skin layer of the colored core multilayer sheet. It is also one of preferred embodiments to contain 0.1 to 5 parts by mass of seeds and 0.1 to 5 parts by mass of at least one selected from ultraviolet absorbers and light stabilizers.
  • at least one selected from an antioxidant and an anti-coloring agent is added (blended), it effectively acts on physical property reduction and hue stabilization due to molecular weight reduction during molding processing.
  • the light resistance during storage of the laser marking multilayer laminate for electronic passports and in the actual use of electronic passports as final products Effectively suppresses deterioration.
  • the lubricant, antioxidant, and anti-coloring agent for the core sheet are the same as the lubricant, antioxidant, and anti-coloring agent contained in the transparent oversheet. Therefore, see the description of the transparent oversheet (lubricant, antioxidant, and anti-coloring agent).
  • the effect of the present invention can be achieved by laminating a transparent oversheet (transparent laser marking sheet) and a core sheet. That is, a colored core sheet is laminated on the surface of the transparent oversheet opposite to the surface irradiated with laser light energy.
  • a transparent oversheet transparent laser marking sheet
  • the oversheet is black-colored
  • the contrast can be ensured and the visibility and clarity of the marking portion can be exhibited.
  • the printed portion is worn down and the visibility is greatly reduced.
  • by printing an image, a character, or the like on the surface of the core sheet disposed in the lower layer of the transparent oversheet it is possible to clear the printed portion and protect the printed portion.
  • the transparent oversheet is configured as a transparent laser mark three-layer sheet (multilayer sheet 1) made of PETG / PC (corresponding to a laser mark) / PETG
  • the laser light energy of the transparent oversheet is irradiated.
  • a colored core multilayer sheet (colored laser mark multilayer sheet) made of “PETG / PC (corresponding to colored laser mark) / PETG” is further laminated on the surface opposite to the surface.
  • the reflectance and contrast it is important to control the reflectance and contrast in order to sufficiently bring out the sharpness of an image (for example, a human face) by laser marking. For example, if the reflectance is insufficient or the contrast is low, the sharpness of the image is degraded.
  • the above-described transparent oversheet (“PETG (transparent laser mark three-layer sheet) / PC (corresponding to laser mark) / PETG (transparent laser mark three-layer sheet))" which is not compatible with laser mark "PETG (transparent ) / PC (white) / PETG (transparent) ”core sheet composed of three layers is heat-fused to form a laser marking multilayer sheet for electronic passports.
  • the transparent layer of PETG is present in the lower layer of the sheet, the reflectance becomes insufficient, which is not preferable.
  • a PC (white) sheet is used as a lower layer of a transparent oversheet instead of the core sheet composed of the three layers “PETG / PC (white) / PETG” described above.
  • the reflectance is improved from the core sheet composed of three layers of “PETG (transparent) / PC (white) / PETG (transparent)”.
  • the sharpness of the image is improved by improving the contrast between black coloring by laser marking of the upper layer (transparent oversheet) and white of the lower layer (PC sheet).
  • the lower layer is a PC (white) core sheet
  • a problem of heat-fusibility with the upper layer occurs.
  • the heat fusion property at a low temperature of about 120 to 150 ° C. is poor.
  • the temperature is raised to 210 to 240 ° C., heat fusion is performed.
  • this causes the upper PETG layer to be softened and melted, so that a laser marking multilayer sheet for electronic passports cannot be obtained.
  • the present invention synergistically exhibits the effects of the present invention by combining the desired transparent oversheet (transparent laser marking sheet) and the core sheet.
  • the arrangement pattern in which the core sheet is laminated on the lower layer of the transparent oversheet in the laser marking multilayer sheet for electronic passports of the present embodiment has been described.
  • the arrangement is not limited thereto. That is, it is not necessarily limited to the one in which the transparent oversheet is disposed in the upper layer and the core sheet is disposed in the lower layer.
  • the transparent oversheet may be disposed in the lower layer and the core sheet may be disposed in the upper layer.
  • the reason why the transparent oversheet (or core sheet) may be arranged in the upper layer or the lower layer is that the position (direction) for viewing the laser-marked image or the like is not limited to the vertical direction.
  • a transparent oversheet is placed on the upper layer and a core sheet is placed on the lower layer.
  • the transparent oversheet and the core sheet are arranged in such a manner that the core sheet is arranged in the upper layer and the transparent oversheet is arranged in the lower layer. Therefore, the upper layer and the lower layer here are used for convenience of explanation, and means that a transparent oversheet is arranged on the side irradiated with laser light energy.
  • the laser marking multilayer sheet for electronic passports in this embodiment is not limited to being laminated with a transparent oversheet / core sheet.
  • a transparent oversheet / core sheet after performing various printing on the surface of the core sheet, it may be laminated so as to be “transparent oversheet / (printed) core sheet / composite hinge sheet / (printed) core sheet / transparent oversheet”. included.
  • the case of lamination with “transparent oversheet / core sheet / composite hinge sheet / core sheet / transparent oversheet” is also included.
  • a laminated sheet of “core sheet / hinge sheet / core sheet” is heat-fused, printed on the surface of the laminated sheet, and further laminated with “transparent oversheet / laminated sheet / transparent oversheet”. Cases are also widely included. It becomes possible to respond flexibly according to the purpose and method of use.
  • Method for forming transparent oversheet and core sheet in order to obtain a transparent oversheet and a colored core sheet, for example, a method of laminating a resin composition for forming each layer by melt extrusion molding so as to have a desired thickness, each layer having a desired thickness There are a method of laminating and forming a film having two layers, a method of melting and extruding two layers, and a method of laminating a film separately formed thereon. Among these, it is preferable to laminate by melt extrusion from the viewpoint of productivity and cost.
  • the resin composition constituting each layer is prepared, or pelletized as necessary, and charged into each hopper of a three-layer T die extruder in which T dies are connected together. Further, it is melted at a temperature in the range of 200 to 300 ° C. and subjected to three-layer T-die melt extrusion molding. Next, it is cooled and solidified by a cooling roll or the like. Thus, a three-layer laminated sheet can be formed.
  • the transparent oversheet and colored core sheet in this invention are not limited to the said method, It can form by a well-known method. For example, it can be obtained according to the description in JP-A-10-71763, pages (6) to (7).
  • the transparent oversheet and the core sheet obtained as described above are cut into predetermined dimensions. Thereafter, these sheets are laminated and bonded by heat fusion or the like at a desired time, desired pressure, and desired temperature to obtain a laser marking multilayer sheet for electronic passports. Moreover, you may manufacture by another method. First, a transparent oversheet and a core sheet are each extruded by melt coextrusion to form a two-type three-layer sheet. Then, the roll-shaped sheet wound up in a roll shape is passed between heating rollers heated to a predetermined temperature.
  • the transparent oversheet / core sheet / transparent oversheet or “core sheet / sheet of polyester elastomer etc./core sheet”.
  • it may be produced by cutting it into a predetermined dimension.
  • it may be manufactured by another method. The transparent oversheet and the core sheet are cut into predetermined dimensions.
  • the desired time, the desired pressure, and the desired temperature are not particularly limited.
  • the desired time, desired pressure, and desired temperature are preferably selected as appropriate.
  • the desired time is about 10 seconds to 6 minutes
  • the desired pressure is 1 to 20 MPa
  • the desired temperature is 120 to 170 ° C. as an example.
  • one end of the composite hinge sheet is provided with an overhang portion that is 5 to 100 mm longer than the transparent oversheet and the core sheet, and using the overhang portion, the inlet is attached to the electronic passport by sewing or It is also one of preferable forms that are configured to be attached to the electronic passport by being bonded or by being sewn and bonded. Even when the composite hinge sheet is configured as an inlet-combined composite hinge sheet, it is preferable to provide a projecting portion that is 5 to 100 mm longer than the transparent oversheet and the core sheet.
  • the length of the overhanging portion when used for an electronic passport, it is difficult to firmly attach the composite hinge sheet between the front cover and the back cover of the electronic passport, and it is easy to remove. Also, when the length of the overhanging portion exceeds 100 mm, the width of the overhanging portion becomes wide and there is no problem with mounting between the front cover and the back cover, but the laminated body laminated on this hinge sheet This is not preferable because the area of the laser marking multilayer sheet and the inlet described later becomes small.
  • Laser marking multilayer sheet for electronic passport is configured as a five-layer laminated sheet composed of “transparent oversheet / core sheet / composite hinge sheet / core sheet / transparent oversheet”, Further, it is preferably configured as an inlet combined composite hinge sheet provided with an antenna. That is, by configuring as a transparent oversheet / core sheet laminated sheet, the clarity of images and the like can be improved. Also, in the electronic passport, unique fixed information such as country is printed on one side of the core sheet (on the side in contact with the transparent oversheet). In that case, the clearness of the image or the like is more conspicuous when printed on the white core sheet.
  • the former is preferable to printing on a dark core sheet such as brown or black because clear printing can be performed without being affected by the background color.
  • the fixed information printing is performed with light white portions. Let it be colored. By doing so, the contrast with the background light color is increased, and a clear image and characters can be obtained. Accordingly, the color of the colored core sheet (colored sheet) is more preferably a pale color such as white.
  • the IC chip and the antenna can be easily arranged by configuring the composite hinge sheet as an inlet combined composite hinge sheet in which the IC-chip and the antenna are directly arranged. Further, it can be used as a so-called IC chip built-in type laser marking multilayer sheet for electronic passports, and the thickness can be reduced.
  • laser marking can be performed from either the front surface or the back surface by configuring as a five-layer laminate sheet of “transparent oversheet / core sheet / inlet combined composite hinge sheet / core sheet / transparent oversheet”. Further, when these five-layer laminated sheets are heat-fused by hot press molding, it can be said that the obtained five-layer laminated sheets hardly warp.
  • the thickness of each layer is preferably 50 to 200 ⁇ m for the transparent laser marking sheet, 100 to 300 ⁇ m for the multilayer sheet, and 80 to 250 ⁇ m for the composite hinge sheet.
  • the transparent oversheet is the so-called three-layer structure described above. It consists of For the transparent oversheet having a so-called three-layer structure, refer to the description of the transparent oversheet.
  • the laminated sheet composed of the five layers can be manufactured by various methods. For example, after laminating “transparent oversheet / core sheet / inlet combined composite hinge sheet / core sheet / transparent oversheet”, a five-layer laminated sheet can be produced by heat-sealing (thermal lamination) with a hot press.
  • the laminated sheet composed of the above five layers when it is desired to print the laminated sheet composed of the above five layers, it is printed and cured with light or thermosetting ink on one side of the core sheet. After that, “transparent oversheet / printed core sheet / inlet combined composite hinge sheet / printed core sheet / transparent oversheet” are laminated and then heat-sealed (heat lamination) with a hot press. As another method, a “core sheet / inlet combined hinge sheet / core sheet” is laminated by heat fusion with a hot press. Then, it prints on the surface of this lamination sheet. Further, it can also be produced by laminating “transparent oversheet / laminated sheet (core sheet / composite hinge sheet / core sheet) / transparent oversheet” and hot pressing.
  • a thin varnish which is a kind of adhesive, is applied to the printed surface. Furthermore, it is dried as necessary. Then, “transparent oversheet / burnish coated / printed multilayer sheet / composite hinge sheet / burnish coated / printed core sheet / transparent oversheet” can be laminated and heat-pressed to be firmly heated and fused.
  • the film thickness after drying the thermally activated adhesive on the one surface of the transparent oversheet is 3 to 20 ⁇ m, preferably 3 to 10 ⁇ m, more preferably 5 to 10 ⁇ m. Apply in advance so that. And as above, after laminating “transparent oversheet (single-sided thermally activated adhesive layer) / core sheet / inlet combined composite hinge sheet / core sheet / transparent oversheet (one-sided thermally activated adhesive layer)”, heating Heat fusion (thermal lamination) with a press. Thereby, it can heat-fuse firmly.
  • the present invention is not limited to this, and a laminated sheet composed of the above five layers may be formed without departing from the configuration and effects of the present invention.
  • the heating temperature in the case of thermal fusion is 120 to 200 ° C., preferably 140 to 180 ° C., although it varies depending on the type of the composite hinge sheet. If the heating temperature is less than 120 ° C., poor adhesion between layers may occur. That is, the interlayer heat-fusibility is deteriorated. Moreover, when it exceeds 200 degreeC, there exists a possibility that abnormality, such as the curvature of the said 5-layer laminated sheet, shrinkage
  • an inlet is inserted between the core sheet / composite hinge sheet of “transparent oversheet / core sheet / composite hinge sheet / core sheet / transparent oversheet”. It is configured as a six-layer laminate of “transparent oversheet / core sheet / inlet / composite hinge sheet / core sheet / transparent oversheet”, and the inlet is configured by disposing an IC chip and an antenna on a thermoplastic resin sheet. It is also preferable to configure as a formed inlet.
  • an IC chip also referred to as “IC-chip”
  • an antenna also referred to as “antenna”
  • a sheet molded from a raw material such as PETG, which is used as an inlet, and placed on one side of a composite hinge sheet.
  • the inlet is formed by cutting a thermoplastic resin sheet such as PETG having a thickness of about 200 to 300 ⁇ m and inserting IC-chip and antenna into the sheet. And it is used as a configuration of “transparent oversheet (for example, transparent laser marking sheet) / inlay sheet (for example, core sheet) / composite hinge sheet / inlay sheet (for example, core sheet) / transparent oversheet (for example, transparent laser marking sheet)”. Furthermore, the configuration of “oversheet / inlay sheet / composite hinge sheet / inlet / inlay sheet / oversheet” may be e-Card compatible.
  • the above-described inlet is used to form a laser marking multilayer sheet for electronic passports in which six sheets of “transparent oversheet / core sheet / composite hinge sheet / inlet / core sheet / transparent oversheet” are laminated. It is also preferable. If the inlet and hinge sheet are made separately, it becomes a 6-layer laminated body with 6 sheets laminated, and is one layer more than a 5-layer laminated body with 5 sheets laminated. This is one of the preferred forms.
  • thermoplastic resin sheet made of a material may be used as the inlet base material.
  • the inlet sheet is laminated on one side of the composite hinge sheet so as to cover the IC chip and the antenna, and after forming the inlet, each of the transparent oversheet and the core sheet is laminated, and when heated, A laminate can be formed. Furthermore, after arrange
  • an adhesive sheet as the inlet material instead of the above-described substantially amorphous aromatic polyester resin or the thermoplastic resin sheet made of the above resin composition.
  • an adhesive sheet as the inlet material instead of the above-described substantially amorphous aromatic polyester resin or the thermoplastic resin sheet made of the above resin composition.
  • Examples of the adhesive sheet as described above include a polyester adhesive sheet having a thickness of about 30 ⁇ m (for example, Aronmelt PES-111EE sheet manufactured by Toa Gosei Co., Ltd.). However, it is not limited to such a thing. In addition, also when using the above-mentioned copolymerization polyester resin or an adhesive sheet, it is preferable that the thickness of an inlet is in the above-mentioned desired range as a whole.
  • the above-mentioned laser marking multilayer sheet for electronic passports which is printed on the surface of the core sheet, and then a five-layer laminate of “transparent oversheet / core sheet / composite hinge sheet / core sheet / transparent oversheet” It is also preferable that these are formed as Or it is the laser marking multilayer sheet for electronic passports described above, and after printing on the surface of the core sheet, 6 layers of “transparent oversheet / coresheet / inlet / composite hinge sheet / coresheet / transparent oversheet” It is also preferable that it is formed as a laminate.
  • the inlet in which an IC-chip and an antenna are arranged, is arranged as follows. That is, the inlet is arranged on one side of the hinge sheet of the five-layer laminate “transparent oversheet / core sheet / hinge sheet / core sheet / transparent oversheet” which is the basic configuration in the data page described above. . More specifically, the configuration is a six-layer laminate of “transparent oversheet / core sheet / inlet / hinge sheet / core sheet / transparent oversheet”.
  • At least one of the transparent oversheet, the core sheet, and the composite hinge sheet for the laser marking multilayer sheet for electronic passports has a mat processing with an average roughness (Ra) of 0.1 to 5 ⁇ m on at least one side surface. Is preferably applied.
  • Ra average roughness
  • the reason for performing the mat processing appropriately and selectively on the surface of each of the above-mentioned sheets is that when the transparent oversheet and the core sheet are subjected to hot press molding, the mat processing is performed as described above. This is because air between the transparent oversheet and the core sheet can be easily removed.
  • the electronic passport of the present invention is a five-layer laminate of “transparent oversheet / core sheet / composite hinge sheet / core sheet / transparent oversheet” or “transparent oversheet / core sheet / inlet combined composite hinge sheet / core sheet / Using the overhanging portion of the hinge sheet of the five-layer laminate of “transparent oversheet”, the electronic passport cover or the back cover is sewn or bonded, or is sewn and bonded, or It can be formed as an electronic passport formed by sewing and bonding.
  • the overhanging portion of the hinge sheet of a laser marking multilayer sheet for electronic passports which is configured as a six-layer laminate of “transparent oversheet / core sheet / inlet / composite hinge sheet / core sheet / transparent oversheet”
  • the electronic passport can be formed as an electronic passport formed by binding or bonding to the electronic passport cover or back cover, or by binding and bonding the sewing machine, or by binding and bonding the sewing machine.
  • Anti-counterfeit forming part Furthermore, in the present invention, it is preferable that a forgery prevention forming portion is formed on at least one of the transparent oversheet, the core sheet, the composite hinge sheet, and the inlet. This is because, by forming (providing) the forgery prevention forming portion, it is possible to reliably prevent forgery and the like in combination with the above-described features.
  • the forgery prevention forming part includes, for example, holograms, micro characters, microwave characters, embossed characters, oblique printing (diagonal characters, etc.), lenticular, black, etc. in addition to characters and images (person images) by laser light energy irradiation Examples include light printing and pearl printing.
  • the laser marking multilayer sheet for electronic passports in the present embodiment is one that develops color by irradiating laser light energy.
  • the laser light gas laser such as He—Ne laser, Ar laser, CO 2 laser, excimer laser, etc. , YAG laser, solid laser such as Nd ⁇ YVO 4 laser, semiconductor laser, dye laser and the like.
  • gas laser such as He—Ne laser, Ar laser, CO 2 laser, excimer laser, etc.
  • YAG laser solid laser such as Nd ⁇ YVO 4 laser, semiconductor laser, dye laser and the like.
  • YAG laser and Nd ⁇ YVO 4 laser are preferable.
  • the resin composition constituting the inlet may have other additives such as a mold release agent, a stabilizer, an antioxidant, and an ultraviolet absorber as long as they do not impair the characteristics. Agents, reinforcing agents, etc. can be added.
  • the laser beam energy may be single mode or multimode as the laser light energy. Further, in addition to a narrowed beam diameter of 20 to 40 ⁇ m, a wide beam diameter of 80 to 100 ⁇ m can be used. However, in the single mode, the beam diameter of 20 to 40 ⁇ m is preferable in that the contrast between the print coloring portion and the base can be 3 or more, and the print quality is excellent in contrast.
  • the laser marking energy for the electronic passport of this embodiment is irradiated with laser light energy
  • the laser beam energy constituting the oversheet.
  • the absorber develops color with laser energy. Since this transparent oversheet is mainly composed of a transparent polycarbonate resin having high heat resistance, it is possible to irradiate high-power laser light energy. Furthermore, since the high-power laser light energy can be irradiated, an image or the like can be drawn easily and more clearly.
  • This PC transparent skin layer effect is not limited to this, and in the case of a single layer of the PC laser coloring layer, the marking portion of the sheet is directly scraped by friction with the outside.
  • the laser marking portion is not scraped even if the PC transparent skin layer is scraped, so it can be said that the laser marking portion is more excellent in scratch resistance and wear resistance. .
  • a sheet made of polycarbonate resin has high heat resistance, it is necessary to set the heat-sealing temperature to 200 to 230 ° C. in the multilayer laminate of the resin sheet. Therefore, a problem also arises in the productivity of the hot press process.
  • various printings are generally performed on an intermediate layer called a core sheet layer.
  • the heat fusion temperature is set to a high temperature of 200 to 230 ° C. in the step of performing the multilayer lamination heating press after printing the core sheet layer, the printing is often “Yakel”, and the printed characters The image may cause discoloration, which is not preferable.
  • PETG is an amorphous copolyester resin and is about 60 to 70 ° C. lower than the glass transition temperature of the polycarbonate resin, so that the heat fusing temperature is 150 to 170 ° C. Can be lowered by about 50 to 60 ° C. Therefore, it is possible to suppress the color change of characters and images printed on the print layer.
  • the laser marking multilayer sheet for electronic passports of this embodiment is excellent in laser markability, and the surface layer or the core layer of the surface layer is colored black by laser light energy irradiation to mark images and characters. Since the stratum is white, clearer characters and images can be drawn with black / white contrast.
  • the scratch resistance of the marking of the core layer PC Excellent wear resistance. Furthermore, it is excellent in heat fusion property with the printing core sheet layer by the PETG skin layer. In particular, there is an effect that the heat-fusibility at a relatively low heating temperature at 150 to 170 ° C. is excellent.
  • the laser mark property is excellent, the transparent laser marking layer itself can be marked deeply, and the print density and the scratch resistance and abrasion resistance of the marking portion can be obtained. Marking with excellent properties becomes possible.
  • Laser marking energy 17 is printed from the transparent oversheet (transparent laser marking sheet) side (single layer sheet or multilayer sheet side) constituting the laser marking multilayer laminate for printing.
  • transparent oversheet transparent laser marking sheet
  • multiple layer sheet or multilayer sheet side single layer sheet or multilayer sheet side
  • a transparent oversheet with a single layer structure or a transparent oversheet with a multilayer structure, combined with the core sheet, composite hinge sheet, and inlet it has excellent laser marking properties and heat fusion properties, and further marking.
  • the wear resistance of the part can also be excellent.
  • a transparent oversheet with a multilayer structure, combined with the core sheet, composite hinge sheet, and inlet it has excellent laser markability, and the surface or the interface between the support and the covering is made of laser. By irradiating with light energy, white characters, white symbols, white symbols and the like can be drawn on the black background more easily and clearly. In particular, it becomes possible to mark an information code such as a barcode with high resolution.
  • the laser marking multilayer sheet for electronic passports in this embodiment can be used suitably for an electronic passport.
  • an IC chip IC-chip
  • an antenna antenna
  • the laminated sheet 51 As shown in FIG. 12A, in the case of an e-Card type passport, an IC chip (IC-chip) and an antenna (antenna) are inserted into the laminated sheet 51 as an inlet. . Further, the passport in which the laminated sheet 51 is bound between the cover 49 and the back cover 50 by the protruding portion 29 of the hinge portion can be exemplified.
  • personal information face image and personal information
  • personal information is written on-demand by laser marking. In other words, personal information is written on demand on an IC chip and a plastic sheet (Plastic-Sheet) arranged in the e-Card.
  • reference numeral 53 denotes a visa sheet.
  • an IC chip and an antenna are arranged in a plastic inlay 52 (Plastic-Inlay).
  • the plastic inlay 52 is affixed to the front cover 49 and the back cover 50.
  • a laminated sheet 54 called a data page (Data-Page) made of a plastic sheet (Plastic-sheet) is bound between the cover 49 and the back cover 50 by the protruding portion 29 of the hinge portion.
  • Data-Page data page
  • the personal information is written on demand on the IC chip and the plastic sheet of the data page.
  • this is an example, and the present invention is not necessarily limited to such a configuration.
  • Hinge sheet Observations of the following [1-1] to [1-5] for the hinge sheets (composite hinge sheets) of Examples 1 to 3, the hinge sheets of Comparative Examples 1 and 2, and the hinge sheet of Reference Example 1 And experiments were performed.
  • Each of the hinge sheets of Examples 1 to 3 (composite hinge sheet), the hinge sheets of Comparative Examples 1 and 2, and the hinge sheet of Reference Example 1 has a cut sheet size of 1 cm wide ⁇ 10 cm long. It produced and used it as the test piece. Further, as shown in FIG. 13A, after the test piece of the cut sheet is pasted to a length of 5 cm from the horizontal base 63, the extent to which the pasting portion of the cut sheet 61 as the test piece hangs is measured. The sheet flexibility was evaluated according to the following criteria. More specifically, as shown in FIG. 13A, the cut sheet 61 is placed on the horizontal table 63 such that 5 cm of the front end in the length direction of the cut sheet 61 comes out from the end of the horizontal table 63.
  • a tear test as shown in FIG. 14C was performed using the test piece obtained as described above. That is, as shown in Fig. 14C, the end of the polycarbonate resin sheet portion 73B where the hinge sheet portion 71B is not sandwiched is fixed (chucked). A tear test was conducted by tearing in the direction of the arrow with human force F at a test speed of 1000 mm / min.
  • the hinge sheet portion 71B of the test piece shown in Fig. 14C corresponds to the hinge sheet 71A shown in Fig. 14A and Fig. 14B. .
  • the tear strength (N) was determined and evaluated according to the following criteria.
  • vertical direction was investigated and "tear strength" was evaluated.
  • the polycarbonate resin sheet portion 73B of the test piece shown in FIG. 14C is the polycarbonate resin sheet 73A shown in FIGS. 14A and 14B and corresponds to a portion sandwiching the hinge sheet 71A.
  • a release agent was applied to one end of the core sheet B cut as described above. Then, the surface of the core sheet B on which the release agent was applied, the hinge sheets (composite hinge sheets) of Examples 1 to 3 cut as described above, the hinge sheets of Comparative Examples 1 and 2, and a reference example
  • Each of the hinge sheets was placed in contact with each other. Furthermore, it arrange
  • a rotary vacuum press machine manufactured by Nissei Plastic Industries
  • the laminate sheet was taken out.
  • the laminate sheet thus obtained was cut out with a width of 20 mm including a release agent application portion in which a release agent was applied to the core sheet B, to obtain a test piece.
  • a peel test is performed by peeling the obtained test piece by hand from the part to which the release agent is applied at a test speed of 300 mm / min, and heat sealing of the transparent laser marking sheet A, the core sheet B, and each hinge sheet. Sex was evaluated according to the following criteria.
  • ⁇ Criteria> A The peel strength is 50 N / cm or more or the material destruction of the sheet is observed, which is very good.
  • ⁇ Peel strength is 20 N / cm or more and less than 50 N / cm, which is favorable.
  • Peel strength is 10 N / cm or more and less than 20 N / cm, and problems are likely to occur.
  • X The peel strength is less than 10 N / cm, which is bad.
  • XX It is not heated and fused (because it can be easily peeled by hand) and cannot be manufactured.
  • F-PET cloth (1) A flat yarn made of polyester having a rectangular cross section with a thickness of 40 ⁇ m and a width of 0.5 mm was used. The flat yarn was woven with a plain weave structure as warps and wefts so that the opening was a square of 0.4 mm length ⁇ 0.4 mm width. In this way, a polyester mesh cloth (hereinafter referred to as “F-PET cloth (1)”) having a biaxial structure, in which all of the warp and the weft are made of flat yarn, was produced. The thickness (total thickness) of the intersection of this “F-PET cloth (1)” was 80 ⁇ m.
  • F-PET cloth (2) A flat yarn made of polyester having a rectangular cross section with a thickness of 30 ⁇ m and a width of 0.5 mm was used. The flat yarn is used as warp, weft, and diagonal threads so that the opening formed by the warp and weft becomes a square of 2.0 ⁇ 2.0 mm in width. Was bisected and woven with a plain weave structure to form a triangle. In this manner, a polyester mesh cloth (hereinafter referred to as “F-PET cloth (2)”) having a triaxial structure, in which warp yarns, weft yarns, and diagonal yarns are all made of flat yarn was produced. The thickness (total thickness) of the intersection of this “F-PET cloth (2)” was 90 ⁇ m.
  • F-PET cloth (3) A flat yarn made of polyester having a rectangular cross section with a thickness of 30 ⁇ m and a width of 0.5 mm was used as the warp. A round yarn made of polyester having a wire diameter (diameter) of 60 ⁇ m was used as the weft. Furthermore, it was woven with a plain weave structure so that the opening was a square having a length of 0.4 ⁇ width of 0.4 mm. Thus, a polyester mesh cloth (hereinafter referred to as “F-PET cloth (3)”) having a biaxial structure, a warp yarn being a flat yarn, and a weft yarn consisting of a round yarn was produced. The thickness (total thickness) of the intersection of this “F-PET cloth (3)” was 90 ⁇ m.
  • Example 1 Hinge sheet (composite hinge sheet) [TPU / F-PET cloth (1)]: As a thermoplastic polyurethane elastomer (hereinafter referred to as “TPU”), non-yellowing type “Milactolan XN-2004” manufactured by Nippon Milactolan Co., Ltd., and hardness (JIS-A) 95 was used. Further, the above “F-PET cloth (1)” was used as a woven sheet. First, “TPU” was melt-extruded from a T-die extruder at 190 ° C. and roll-pressed with “F-PET cloth (1)” at the T-die outlet.
  • TPU thermoplastic polyurethane elastomer
  • JIS-A hardness
  • Example 2 Hinge sheet (composite hinge sheet) [TPU / F-PET cloth (2)]: Instead of “F-PET cloth (1)” described in Example 1, the above “F-PET cloth (2)” was used as a woven sheet in the same manner as in Example 1, except that “ Hinge sheet (composite hinge sheet) consisting of “TPU” / “F-PET cloth (2)” / “TPU” by completely integrating “TPU” and “F-PET cloth (2)” Got.
  • This hinge sheet (composite hinge sheet) is hereinafter referred to as “TPU / F-PET cloth (2)”.
  • the total thickness of “TPU / F-PET cloth (2)” obtained as described above was 120 ⁇ m.
  • Example 3 Hinge sheet (composite hinge sheet) [TPU / F-PET cloth (3)]: In the same manner as in Example 1, except that “F-PET cloth (3)” was used as a woven sheet instead of “F-PET cloth (1)” described in Example 1, “TPU” and “F-PET cloth (3)” are completely integrated to form a hinge sheet composed of ““ TPU ”/“ F-PET cloth (3) ”/“ TPU ”(composite hinge sheet) ) This hinge sheet (composite hinge sheet) is hereinafter referred to as “TPU / F-PET cloth (3)”. The total thickness of “TPU / F-PET cloth (3)” obtained as described above was 120 ⁇ m. TPU / F-PET cloth (3) / TPU composite hinge sheet was manufactured.
  • Hinge sheet [PET cloth] A round yarn having a circular cross section with a wire diameter (diameter) of 48 ⁇ m was used to weave a plain weave structure so that the opening was a square of 270 mm long ⁇ 270 mm wide.
  • PET cloth a polyester mesh cloth having a biaxial structure, in which all of the warp and the weft are made of the above-described round yarn, was produced as a hinge sheet.
  • thermoplastic polyurethane elastomer As the thermoplastic polyurethane elastomer (TPU), a non-yellowing type “Milactolan XN-2004” manufactured by Nippon Milactolan Co., Ltd., hardness (JIS-A) 95 was used. The “thermoplastic polyurethane elastomer” was extruded at 190 ° C. with a T-die extruder to produce a single TPU sheet as a hinge sheet. This “TPU single sheet” is hereinafter referred to as “TPU”. This “TPU” had a thickness of 120 ⁇ m.
  • Hinge sheet [TPU / PET cloth] instead of “F-PET cloth (1)” described in Example 1, a round yarn having a circular cross section with a wire diameter (diameter) of 48 ⁇ m is used, and a polyester mesh cloth having a square with an opening of 270 mm ⁇ 270 mm Other than using (PET cloth), “TPU” / “PET cloth” / “TPU” in which “TPU” and “PET cloth” are completely integrated in the same manner as in the first embodiment. A hinge sheet was obtained. This hinge sheet is hereinafter referred to as “TPU / PET cloth”. The total thickness obtained as described above was 120 ⁇ m.
  • Irganox 1076 n-octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate
  • the thickness of the skin layer on the front and back sides is the same, and the layer structure is skin layer (20 ⁇ m) / core layer (110 ⁇ m) /
  • the thickness of the core layer was set to 73% while the thickness of the core layer was set to 73%, and the average surface roughness (Ra) on both sides was set to 0.5 to 1.8 ⁇ m.
  • the applied core sheet B was obtained.
  • the hinge sheet of Comparative Example 1 was inferior in cutting workability, and the sheet flexibility and tear strength were not sufficiently satisfactory.
  • the hinge sheet of Comparative Example 2 was remarkably inferior in cut workability and tear strength.
  • the hinge sheet of Reference Example 1 is superior to the hinge sheets of Comparative Examples 1 and 2 in terms of workability of the cut sheet, sheet flexibility, tear strength, and heat fusion that causes material destruction. It was.
  • the composite hinge sheets of Examples 1 to 3 were more excellent in tear resistance than the hinge sheet of Reference Example 1.
  • the composite hinge sheet according to the present invention is excellent in tear resistance, fracture resistance, flexibility, bending resistance, durability, heat-fusibility, workability, and dimensional accuracy.
  • the laser marking multilayer sheet for an electronic passport according to the present invention using this composite hinge sheet is marked without damage to the transparent laser marking sheet by laser light energy irradiation.
  • the contrast between the fabric color of the transparent laser marking sheet and the laser-marked printing portion is high, and clear characters, symbols, designs, and images can be obtained.
  • it is excellent also in heat resistance and productivity.
  • the electronic passport according to the present invention is excellent in tear strength and tensile strength, and has sufficient strength against repeated bending without losing flexibility.
  • the electronic passport according to the present invention is excellent in temporal stability such as light resistance during use.
  • the electronic passport according to the present invention is effective for preventing falsification and forgery.
  • thermoplastic resin (closing the opening)
  • 8 skin layer (of thermoplastic resin)
  • 10A, 10B Composite hinge sheet
  • 11A, 11B, 11C Laser marking multilayer sheet for electronic passport
  • 25b core layer (of the colored core multilayer sheet multilayer core sheet
  • 17 laser light energy (laser beam)

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Credit Cards Or The Like (AREA)
PCT/JP2012/053023 2012-02-09 2012-02-09 Feuille d'articulation composite, feuille multicouche à marquage au laser pour un passeport électronique et passeport électronique Ceased WO2013118283A1 (fr)

Priority Applications (2)

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JP2012524436A JP5173085B1 (ja) 2012-02-09 2012-02-09 複合ヒンジシート、電子パスポート用レーザーマーキング多層シート及び電子パスポート
PCT/JP2012/053023 WO2013118283A1 (fr) 2012-02-09 2012-02-09 Feuille d'articulation composite, feuille multicouche à marquage au laser pour un passeport électronique et passeport électronique

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KR101738837B1 (ko) * 2017-01-13 2017-05-23 주식회사 아로텍 복합 강화필름 및 제조방법
KR101782293B1 (ko) * 2017-04-06 2017-09-29 주식회사 아로텍 복합 강화필름
WO2019078026A1 (fr) * 2017-10-16 2019-04-25 ジェイサイエンテック株式会社 Feuille composite
GB2582033A (en) * 2019-03-01 2020-09-09 De La Rue Int Ltd Attachment layer for attaching a data sheet in a security document

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JP6278430B1 (ja) * 2017-05-08 2018-02-14 独立行政法人 国立印刷局 冊子綴じ部を有するプラスチックシート及びデータページ
JP7083997B2 (ja) * 2018-07-09 2022-06-14 小林クリエイト株式会社 冊子用情報記録シート

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