High wearing feature sticking magnetic stripe

A high wear resistance, magnetic stripe technology, applied in the field of magnetic stripes, can solve the problems of magnetic recording information loss, affecting performance, information distortion, etc., and achieve the effects of high filling density, high gloss, and low static electricity.

Inactive Publication Date: 2005-06-01
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to frequent use, the current magnetic cards are prone to magnetic strip wear, information distortion, an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0074] Example 1

[0075] Vinyl chloride-vinyl acetate-vinyl alcohol copolymer 10 parts

[0076] Polyurethane 100 parts

[0077] Modified silicone 30 parts

[0078] Acetylene carbon black 20 parts

[0079] wax powder 10 parts

[0080] Titanium oxide 5 parts

[0081] Aluminum oxide 5 parts

[0082] 0.4 parts of soybean lecithin

[0083] Curing agent (101-B) 20 parts

[0084] 500 parts of toluene

[0085] Butanone 450 parts

[0086] Cyclohexanone 150 parts

[0087] First prepare a mixed solution of 500 parts of toluene, 450 parts of butanone, and 150 parts of cyclohexanone, dissolve 10 parts of vinyl chloride-vinyl acetate-vinyl alcohol copolymer, add 100 parts of polyurethane, 30 parts of modified silicone, and acetylene carbon 20 parts of black, 10 parts of wax powder, 5 parts of titanium oxide, 5 parts of aluminum oxide, 0.4 parts of soybean lecithin, carry out planetary stirring for about 2 hours to pre-disperse, and then carry out constant temperature sand grindin...

Example Embodiment

[0089] Example 2

[0090] Vinyl chloride-vinyl acetate-acrylic acid-β-hydroxypropyl copolymer 45 parts

[0091] 45 parts of polyurethane

[0092] Silicone 2 parts

[0093] Oxidized carbon black 10 parts

[0094] wax powder 8 parts

[0095] Aluminum oxide 2 parts

[0096] Lecithin 8 parts

[0097] Curing agent (101-B) 30 parts

[0098] 800 parts of toluene

[0099] Cyclohexanone 200 parts

[0100] First prepare 800 parts of toluene and 200 parts of cyclohexanone into a mixed solution, dissolve 45 parts of vinyl chloride-vinyl acetate-acrylic acid-β-hydroxypropyl copolymer, add 45 parts of polyurethane, 2 parts of silicone, and 10 parts of oxidized carbon black Parts, 8 parts of wax powder, 2 parts of alumina, 8 parts of lecithin, carry out planetary stirring for about 2 hours to pre-disperse, and then carry out constant temperature sand grinding in the range of 35 ℃ ~ 45 ℃ to make a surface layer slurry, add curing agent before coating 101-30 parts of B, stir for later...

Example Embodiment

[0102] Example 3

[0103] Vinyl chloride-vinyl acetate-ethylene glycol acrylate polymer 5 parts

[0104] 60 parts of polyurethane

[0105] Modified silicone 20 parts

[0106] Graphite 25 parts

[0107] Titanium oxide 2 parts

[0108] Stearic acid 0.1 parts

[0109] Curing agent (101-B) 5 parts

[0110] 600 parts of toluene

[0111] Dissolve 5 parts of vinyl chloride-vinyl acetate-ethylene glycol acrylate copolymer in 600 parts of toluene, add 60 parts of polyurethane, 20 parts of modified silicone, 25 parts of graphite, 2 parts of titanium oxide, and 0.1 part of stearic acid. Carry out planetary stirring for about 2 hours to pre-disperse, then carry out constant temperature sand grinding in the range of 35°C to 45°C to make a surface layer slurry, add 5 parts of curing agent 101-B before coating, and stir for later use.

[0112] A magnetic layer is coated on a 12 μm polyester film tape base, and a protective layer is coated on the magnetic layer with a thickness of abou...

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PUM

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Abstract

The present invention relates to magnetic bar, and is especially one kind of adhesive magnetic bar with high wear resistance. The magnetic bar consists of adhering layer, base belt, magnetic layer and protecting layer, and features the protecting layer comprise ternary polymer 5-90 (in weight portions, the same below), polyurethane 5-100, assistant 2-30, antistatic agent 3-30, grinding agent 1-20, dispersant 0.1-10, curing agent 2-20 and solvent 400-1400. The recipe makes the magnetic bar possess the features of high hardness, high wear resistance, good heat resistance, high brightness, high antistatic performance, good flexibility and high tensile stability, as well as low material consumption, low cost and long service life.

Description

technical field [0001] The invention relates to a magnetic strip, in particular to a highly wear-resistant sticky magnetic strip. technical background [0002] As a kind of magnetic recording medium, the sticky magnetic strip has been developed earlier and has entered many In the field of application, it is used to produce a large number of various card products such as charge cards, reservation cards, tickets, savings cards, credit cards, and transportation cards. At present, the production of adhesive magnetic strips generally uses 3 to 4 coatings, that is, a magnetic layer, a colored layer, and a protective layer are sequentially coated on the polyester film base (thickness 12 μm), and then coated on the back of the polyester film base. Layer, paste the magnetic strip on the card base, and then hot press to make a magnetic strip type magnetic card. However, due to frequent use, the current magnetic cards are prone to magnetic strip wear, information distortion, and even...

Claims

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Application Information

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IPC IPC(8): C09K3/00G06K19/06
Inventor 王义军张少纯
Owner CHINA LUCKY FILM CORP
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