PVC card substrate

Abstract

The invention discloses a PVC card substrate, a composition formula thereof, and a production process flow carried out according to the composition formula. The composition formula comprises 40% of PVC resin, 40-45% of an impact modifier, 2.0% of a stabilizer, 1.7% of a cross-linking agent, 6-7% of titanium dioxide, 6-8% of calcium carbonate, and a proportioned amount of a toner. The Vicat temperature of the PVC card substrate is improved through surface friction treatment and high-voltage alternate current corona treatment by using optimizing the formula design and a production technology, so the Vicat softening temperature of the PVC card substrate reaches 92 DEG C, and the highest tolerant ambient temperature can reach 94 DEG C; the PVC card substrate can be widely applied to bank cards, IC cards and other card product substrates; the PVC card substrate can be widely applied to communication substrates, mobile phone chip cards and smart card substrates; the PVC card substrate can be widely applied to the production of set-top cable box certification cards, and health insurance cards and social security cards in the social security and medicine fields; and the PVC card substrate has the advantages of simple production technology, low manufacturing cost, high added value and good comprehensive performances.

Description

technical field [0001] The invention relates to the technical equipment field of PVC hard film, in particular to a PVC card base material. Background technique [0002] PVC hard film is a high-quality plastic composite material, widely used in bank cards, IC cards and other card products base material; widely used in communication, mobile phone chip card, smart card base material; widely used in cable television set-top box authentication card And the production of medical insurance cards and social security cards for social security and medical care; it has the characteristics of strong acid and alkali resistance, heavy pressure resistance, tensile strength, anti-aging, and anti-static. PVC rigid film is a card substrate made by adding impact modifiers and organotin stabilizers, and undergoing processes such as mixing, extrusion, kneading, cloth, calendering, trimming, and winding. [0003] In the prior art, the Vicat softening temperature of PVC hard film can only reach 7...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the Vicat softening temperature of PVC hard film can only reach 78 degrees, and the low Vicat degree will cause the card substrate to soften and deform at higher temperatures, such as exceeding 60°C, and signal transmission contact Defective, resulting in failure of the card body; people urgently need to find a PVC pupil base material with higher Vicat degree, which can withstand higher ambient temperature

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