High wearing feature sticking magnetic stripe

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...