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Transfer type magnetic bar

A transfer type, magnetic stripe technology, applied in the field of magnetic stripes, can solve the problems of large magnetic signal interval loss and the difficulty in meeting the standard requirements for output signals of invisible magnetic cards, and achieve the effects of reducing interval loss, wide application range, and simple structure

Active Publication Date: 2012-04-18
BAODING LUCKY INNOVATIVE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cover layer of the invisible magnetic card is generally 5~8μm, and the ordinary transfer type magnetic strip is used to make the invisible magnetic card, which will increase the distance between the magnetic layer and the magnetic head to 7~11μm, so that the loss of the magnetic signal interval is too large, resulting in the use of The output signal of the invisible magnetic card made of ordinary transfer type magnetic stripe is difficult to meet the standard requirements

Method used

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Examples

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preparation example Construction

[0041] The preparation method of the adhesive layer is as follows: stirring and sanding titanium dioxide, resin solution, solvent, etc. to prepare the adhesive layer slurry.

[0042] The transfer type magnetic strip without stripping layer provided by the invention can be obtained by the following method:

[0043] Coat the tape base with a peelable magnetic layer by known coating methods such as bar coating, gravure coating, extrusion coating, reverse roll coating, etc., and then coat the adhesive layer on the peelable magnetic layer, dry and cut , to obtain a transfer-type magnetic strip without a peeling layer.

[0044] The present invention will be further described below in conjunction with specific embodiments, but the present invention is not limited thereto.

Embodiment 1

[0046] Strippable magnetic layer slurry preparation

[0047] 100 parts of hydroxyacrylic acid,

[0048] 20 parts of polyester,

[0049] Magnetic powder 500 parts,

[0050] 25 parts of soybean lecithin,

[0051] 25 parts of modified silicone,

[0052] Curing agent (isocyanate) 40 parts,

[0053] 600 parts of toluene,

[0054] Butanone 900 parts,

[0055] Add 100 parts of hydroxyacrylic acid, 20 parts of polyester, 500 parts of magnetic powder, 25 parts of soybean lecithin and 25 parts of modified silicone into 600 parts of toluene and 900 parts of butanone, stir well, and sand Disperse to make a peelable magnetic layer slurry, add 40 parts of curing agent (isocyanate) and set aside.

[0056] Coating a strippable magnetic layer on a 20-micron PET tape base, then coating an adhesive layer on the strippable magnetic layer, drying, and slitting to obtain a film with a thickness of 7 microns for a strippable magnetic layer and a thickness of 3 microns for the adhesive layer. ...

Embodiment 2

[0058] Strippable magnetic layer slurry preparation

[0059] Rosin resin 80 parts,

[0060] 30 parts of polyester,

[0061] Magnetic powder 300 parts,

[0062] 15 parts of soybean lecithin,

[0063] Curing agent (amino resin) 20 parts,

[0064] 600 parts of toluene,

[0065] 600 parts of sec-butyl acetate,

[0066] Add 80 parts of rosin resin, 30 parts of polyester, 300 parts of magnetic powder and 15 parts of soybean lecithin into 600 parts of toluene and 600 parts of sec-butyl acetate, stir evenly, and sand mill to disperse to make a peelable magnetic For layering, add 20 parts of curing agent (amino resin) and set aside.

[0067] Coating a peelable magnetic layer on a 20 micron PET tape base, and then coating an adhesive layer on the peelable magnetic layer, drying and slitting to obtain a transfer film with a thickness of 10 microns for a peelable magnetic layer and a thickness of 3 microns for the adhesive layer. Type magnetic strip, measure its performance.

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Abstract

The invention discloses a transfer type magnetic bar without stripping layer. In the transfer type magnetic bar, a strippable magnetic layer is arranged between a strip base and an adhesive layer. In the invention, the structure is simple, the manufacturing process is simple and convenient, the electromagnetic signal output interval loss is small, and the transfer type magnetic bar is suitable for making credit cards, cash cards, bankbooks and other magnetic card products.

Description

technical field [0001] The invention relates to a magnetic strip, in particular to a transfer type magnetic strip without peeling layer. Background technique [0002] Transfer-type magnetic stripes are used to make magnetic card products such as credit cards, savings cards, and bankbooks. Due to their mature technology and convenient use, they have been widely popularized. [0003] At present, transfer-type magnetic strips generally use three to four coatings, namely peeling layer, protective layer (or peeling and protective layer), magnetic layer and adhesive layer. Paste the magnetic strip on the card base and heat press it to make a magnetic card. During the use of the magnetic card, because there is a peeling layer between the magnetic head and the magnetic layer, when the magnetic card is read and written, the interval loss of the magnetic signal is increased, which limits the It is used on some special magnetic cards. At the same time, because the existing magnetic st...

Claims

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Application Information

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IPC IPC(8): B42D15/10B32B27/06B42D107/00B42D25/22B42D25/305B42D25/45
Inventor 刘彦峰董社昌
Owner BAODING LUCKY INNOVATIVE MATERIALS
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