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Sheet for cards and card

A technology of using sheets and chips, applied in the field of environmentally friendly card sheets, can solve the problems of increased warpage, large burrs on the cutting surface, large embossing curl, etc., and achieves the effect of excellent embossing adaptability

Active Publication Date: 2013-01-23
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for various impact-resistant polystyrenes and acrylonitrile / butadiene / styrene copolymers as raw materials for non-PVC cards, there are problems as follows: The burr (hereinafter referred to as "punching burr") is large, and the warpage of the card (hereinafter referred to as "embossed curl") after embossing is also increased
This material has processing adaptability to cards close to that of PVC sheets, and can be produced with the same equipment as PVC sheets. It is said to be a strong candidate for replacing PVC sheet raw materials, but it has the following problems: When embossing is performed under the same conditions, the embossing curl becomes larger
[0007] On the other hand, more than half of the plastic used in various cards is incinerated after use

Method used

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  • Sheet for cards and card
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0171] Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited to these Examples.

no. 1 approach

[0172] [Example of the first embodiment]

[0173] The measurement methods and evaluation methods for various measured values ​​and evaluations are as follows.

[0174] (1) Heat resistance (glass transition temperature)

[0175] Using the card sheet in each production example as a sample, using a viscoelasticity spectrophotometer DVA-200 (manufactured by IT Measurement and Control Co., Ltd. (Ai Tei Measurement Control Co., Ltd.) Temperature dispersion measurement of dynamic viscoelasticity (JIS-K7198A method (1991) dynamic viscoelasticity measurement) was carried out under the condition of °C / min. In addition, the temperature at which the loss tangent value (tan δ) shows the main dispersion peak was defined as the glass transition temperature.

[0176] (2) Weather resistance (color difference ΔYI)

[0177] Using Eye Super UV tester SUV-W151 (manufactured by Iwasaki Electric) as the tester, the UV irradiation intensity: 75mW / cm 2 . Irradiation temperature: 63 degreeC, irradi...

manufacture example 1

[0184] Using a 40mmφ co-rotating twin-screw extruder at 220°C, the ratio of structural unit derived from isosorbide: structural unit derived from 1,4-cyclohexanedimethanol = 40:60 (mol%) The polycarbonate resin is kneaded, then extruded from a T-die, and then quenched with a casting roll at 80°C, and at the same time, the surface opposite to the casting roll is brought into contact with the matting roll to perform a matting process. A card cover sheet (A-1) with a thickness of 100 μm was prepared. The ten-point height of the micro-roughness of the matte processed surface is 15 μm.

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Abstract

Disclosed are a sheet for cards using a resin which is obtained from a plant-derived starting material, said sheet having excellent heat resistance, excellent weatherability, high rigidity, excellent punching processability and excellent embossing processability; and a card. The sheet for cards is provided with a layer formed of a resin composition (X) comprising, as the main component, a polycarbonate resin (A) which contains a structural unit (a) derived from a dihydroxy compound represented by formula (1) and has a glass transition temperature lower than 130 DEG C.

Description

technical field [0001] The present invention relates to a sheet for cards and a card produced using the sheet for cards, and more specifically, to an environmentally-friendly card sheet mainly composed of a resin derived from plant origin (also called "plant resin") as a main raw material , and cards made using this card piece. Background technique [0002] Polyvinyl chloride resin (hereinafter referred to as "PVC") has conventionally been used as a material for plastic cards such as magnetic stripe cards and non-contact IC cards. In general, magnetic stripe cards are manufactured as follows: a transparent cover sheet with a magnetic stripe pre-attached is laminated on a printed white laminated core sheet, and hot-melt bonding occurs between the sheets by hot pressing. (hereinafter referred to as "lamination"), and then cut into card shapes with a punching knife, and finally engrave characters with an embossing machine (hereinafter referred to as "embossing"). In addition,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00B42D15/10C08J5/18C08G64/02
CPCG06K19/02C08J5/18B42D2033/30C08L69/00G06K19/07C08G64/0208B42D25/00C08J2369/00B42D15/10G06K19/06187B42P2241/28C08G64/02B32B27/365B42D25/45B42D25/425
Inventor 横木正志北出拓西川良树
Owner MITSUBISHI CHEM CORP