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Composite hinge sheet for laser-marking multilayer laminate for electronic passport, laser-marking multilayer laminate for electronic passport, and electronic passport

A technology of laser marking and multi-layer sheets, which is applied in the directions of information-carrying cards, layered products, transportation and packaging, etc. It can solve the problems of large expectations and achieve the effects of excellent anti-counterfeiting, improved transparency, and anti-tampering

Active Publication Date: 2012-05-30
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, whether a high-contrast and clear display can be realized is also related to the prevention of tampering or counterfeiting, so the market's expectations are also high.

Method used

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  • Composite hinge sheet for laser-marking multilayer laminate for electronic passport, laser-marking multilayer laminate for electronic passport, and electronic passport
  • Composite hinge sheet for laser-marking multilayer laminate for electronic passport, laser-marking multilayer laminate for electronic passport, and electronic passport
  • Composite hinge sheet for laser-marking multilayer laminate for electronic passport, laser-marking multilayer laminate for electronic passport, and electronic passport

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0340] (Example 1) Composite hinged sheet [1]:

[0341] As a thermoplastic polyurethane elastomer (TPU), a non-yellowing type "Miractran XN-2004" manufactured by Japan Miractran Co., Ltd., with a hardness (Shore hardness A (hereinafter, also referred to as "Shore-A") as appropriate) of 95 was used. The polyester fabric (hereinafter, also referred to as "PET-mesh" or "PET-mesh cloth" as appropriate) used monofilament polyester "TNo-80-48" manufactured by Nippon Special Textile Co., Ltd., with a wire diameter of 48 μm and a thickness of 80 μm. The opening ratio is 72%. Next, TPU is melt-extruded from the T-die extruder at 185°C, and rolled with PET-mesh at the T-die outlet to form a TPU composed of TPU / PET-mesh A TPU / PET-mesh composite hinged sheet that is fully integrated with PET-mesh and forms a TPU skin layer on both sides of PET-mesh with a total thickness of 150 μm.

Embodiment 2

[0342] (Example 2) Composite hinged sheet [2]:

[0343] Use the same TPU and PET-mesh as in Example 1. In addition, in the same manner as in Example 1, two extruders with a T-die were used to melt and extrude TPU from the T-die extruder at 185° C., and immediately after the T-die exit, the TPU The composition of / PET-mesh / TPU is rolled and pressed to form a TPU / PET-mesh composite hinged sheet with a total thickness of 150 μm that is completely integrated with TPU and PET-mesh.

Embodiment 3

[0344] (Example 3) Composite hinged sheet [3]:

[0345] Instead of the PET-mesh of Example 1, a fabric of thermoplastic polyamide (hereinafter also referred to as "polyamide-mesh" as appropriate), a monofilament polyamide "NNo-100M" manufactured by Nippon Special Fabrics Co., Ltd., with a wire diameter of 71 μm, Thickness 125μm, aperture ratio 52%. Except for this, in the same manner as in Example 1, a fully integrated TPU / polyamide-mesh composite hinge sheet with a total thickness of 150 μm consisting of TPU / polyamide-mesh was formed.

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Abstract

Disclosed is a composite hinge sheet configured by forming a thermoplastic resin layer (5) from a thermoplastic resin on both surfaces of a woven-article-like sheet (3) having multiple openings therein. The woven-article-like sheet (3) comprises at least one kind of woven fabric or non-woven fabric selected from polyester, polyamide and polypropylene. The thermoplastic resin layer (5) is formed from a starting-material resin such that the Shore A surface hardness flexibility is 85 or above and the Shore D surface hardness flexibility is less than 70. A composite hinge sheet is formed by infiltrating part of the thermoplastic resin into the openings on the woven-article-like sheet (3), thus blocking all the openings and integrating the thermoplastic resin layer (5) with the woven-article-like sheet (3). The composite hinge sheet has excellent tearing and tensile strength, is resistant to light and heat in the binding part thereof, and has excellent resistance to repeated bending.

Description

technical field [0001] The present invention relates to a composite hinge sheet for laser marking multilayer laminates for electronic passports used in electronic passports, a laser marking multilayer laminate for electronic passports using the composite hinge sheet, and an electronic passport. In particular, it relates to composite hinged sheets with excellent heat-melt adhesiveness, durability, bendability, and processability; and laser beam irradiation to mark multi-layer sheets without damage, and the contrast between the base color and the printed part is high, A laser-marked multilayer laminate for electronic passports can be obtained with clear characters, symbols, and images, and is excellent in heat resistance and productivity; and an electronic passport using a laser-marked multilayer laminate for electronic passports. Background technique [0002] Today, the flow of human resources is active due to the development of international exchanges, and the importance of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/02B42D15/10
CPCB42D15/10B32B27/32B32B27/34B42D2037/08B32B27/36B42D25/00B42D25/24B32B27/02B42D13/00B32B27/04B42D25/455B42D25/46Y10T428/24355Y10T428/2495Y10T428/266Y10T442/2893Y10T442/2918B32B5/02B42D25/41
Inventor 阪上俊规渡边崇志末石裕树桥本章
Owner MITSUBISHI CHEM CORP
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