Stripping layer composition and stripping layer sign strip produced thereby

A technology of composition and peeling layer, applied in the direction of coating, recording medium used by machines, instruments, etc., can solve the problems of poor writing performance, easy contamination of signatures, insufficient absorption of handwriting, etc., to achieve reprintability and The effect of reducing resistance

Active Publication Date: 2008-02-06
ZHONGCHAO SPECIAL SECURITY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if such a wax-based polymer resin is used, the peeling layer directly used as the surface layer of the signature strip for the cardholder's signature after peeling off will have poor writing performance, and the ink absorption of the signature area will be low, especially When the cardholder signs with a pen or signature pen, the handwriting cannot be fully absorbed for a long time (sometimes up to 1 hour). During the drying and absorption period, the cardholder's signature is easily contaminated, thus making the handwriting blurry, or even unrecognizable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Preparation of the release layer composition of the signature strip:

[0020] Dissolve and disperse the following components in the mixed solvent at normal temperature and pressure according to the following proportions, then add various additives, and then use a sand mill to grind, thus A composition for a signature strip peeling layer was obtained, which was used as a coating liquid for the signature strip peeling layer.

[0021] Ethyl acetate 1000g

[0022] Butanone 6000g

[0023] Cyclohexanone 500g

[0024] Cellulose acetate propionate (EASTMAN, CAP-551-0.2) 400g

[0025] Ethylene vinyl acetate copolymer 200g

[0026] Calcium silicate 1700g

[0027] Fumed silica (Degussa AG, Aerosil R802) 45g

[0028] Di-isooctyl phthalate 75g

[0029] Tin methyl mercaptide 20g

[0030] Dispersant 220g

[0031] Leveling agent 130g

[0032] (2) Preparation of other functional layers of the signature strip:

[0033] Plastic film substrate: A 19 μm MELINEX(R) 377 (DuPont...

Embodiment 2

[0059] Dissolve and disperse the following components in the mixed solvent at normal temperature and pressure according to the following proportions, then add various additives, and then use a sand mill to grind, thus A composition for a signature strip peeling layer was obtained, which was used as a coating liquid for the signature strip peeling layer.

[0060] Diacetone Alcohol 500g

[0061] 4-methyl-2-pentanone 2000g

[0062] Butyl acetate 2000g

[0063] Xylene 3000g

[0064] Vinyl chloride / vinyl acetate binary copolymer

[0065] (WACKER, VINNOL, E15 / 45) 500g

[0066] Nitrocellulose (1 / 2H) 300g

[0067] Calcium carbonate 2000g

[0068] Fumed silica (Degussa AG, Aerosil R972) 50g

[0069] Citrate 120g

[0070] UV absorber (Tinuvin327, Ciba Geigy) 40g

[0071] Wetting agent 200g

[0072] Leveling agent 150g

[0073] On the same plastic film substrate as in Example 1, use bottom feed reverse anilox roll coating, top feed reverse anilox roll coating, comma direct ani...

Embodiment 3

[0075] Dissolve and disperse the following components in the mixed solvent at normal temperature and pressure according to the following proportions, then add various additives, and then use a sand mill to grind, thus A composition for a signature strip peeling layer was obtained, which was used as a coating liquid for the signature strip peeling layer.

[0076] Cyclohexanone 1000g

[0077] Butanone 2500g

[0078] Xylene 3000g

[0079] Hydroxyl modified vinyl chloride (Dow, VAGF) 400g

[0080] Nitrocellulose (1 / 8H) 300g

[0081] Calcium carbonate 2000g

[0082] Fumed silica (Degussa AG, Aerosil R802) 50g

[0083] Dibutyl sebacate 120g

[0084] Dispersant 180g

[0085] Leveling agent 150g

[0086] UV absorber 30g

[0087] On the same plastic film substrate as in Example 1, use bottom feed reverse anilox roll coating, top feed reverse anilox roll coating, comma direct anilox roll coating, comma reverse anilox roll coating Modes such as coating or direct anilox roll coati...

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Abstract

The invention provides a disjuncting layer composition for thermal transfer film and signature piece of the disjuncting layer made of the composition, wherein the composition comprises polymer resin, inorganic filler, solvent and additive. In the composition containing the polymer resin and the inorganic filler, the polymer resin take up 5-50wt percent, and the inorganic filler take up 50-95wt percent. As the components include inorganic fillersproviding pore structure, and the adding ratio of the inorganic filler in the composition containing the polymer resin and the inorganic filler is controlled at a high level (more than or equal to 50wt percent), the disjuncting layer of the thermal transfer film has good disjuncting performance, good ink absorption and writing.

Description

technical field [0001] The invention relates to a peeling layer composition and a signature strip, in particular to a peeling layer composition for a thermal transfer film and a signature strip comprising a peeling layer made of the composition. Background technique [0002] With the increasing popularity and rapid increase of the issuance of financial plastic cards, the requirements for security and identification are also increasing. In order to improve the security performance and identification performance of the financial card, it is common to set a signature strip on the back of the financial card for the cardholder to sign, which is thermally transferred to the financial card after the plastic film substrate is peeled off under heat and pressure. . Such signature strips typically include a plastic film substrate layer, a release layer and other functional layers. [0003] Among them, the peeling layer of the signature strip, as a layer directly bonded to the plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/06C09D183/04C09D127/22C09D101/12C09D101/18C09D123/08C09D7/12C09D5/20G06K19/06
Inventor 叶东刘立民李尚昆吴远启张静芳叶中东关蕊
Owner ZHONGCHAO SPECIAL SECURITY TECH
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