A release film for a polarizing plate

By introducing a textured repair layer and a dotted or mesh adhesive layer as a tear-aiding layer into the release film for polarizers, the problem of difficult peeling caused by scratches on the release film is solved, achieving efficient peeling and stable bonding.

CN224408649UActive Publication Date: 2026-06-26JIANGYIN TONGLI OPTOELECTRONICS TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGYIN TONGLI OPTOELECTRONICS TECH
Filing Date
2025-06-24
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing release films for polarizers are prone to scratches or abrasions during production and use, leading to defects in the release layer, affecting the structure of the PSA layer, and causing difficulties in peeling and an increase in release force.

Method used

The repair layer and release layer are combined with a textured surface, and a tear-aid layer is attached to the substrate layer with a dotted or mesh-like first adhesive layer. The repair layer repairs scratches, and there is an unbonded portion between the tear-aid layer and the substrate layer after cutting, which helps with peeling.

Benefits of technology

It effectively repairs both deep and shallow scratches, ensuring that the release film can smoothly adhere to the product after cutting, improving the peeling effect, preventing release force from rising, and enhancing peeling performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of release film for polarizing sheet, comprising: substrate layer, its one surface is provided with release layer;Release layer and substrate layer between are provided with repair layer, repair layer and release layer concave-convex cooperation, the other surface of substrate layer is provided with tear-aiding layer, tear-aiding layer is connected with substrate layer by first adhesive layer of point or net shape.The above-mentioned release film structure for polarizing sheet is reasonable, through the repair layer of concave-convex cooperation with release layer, deep or shallow scratch can be repaired in place;Through the tear-aiding layer of first adhesive layer of point or net shape and substrate layer connection, release film is adhered after cutting with product, there is no bonding between tear-aiding layer and substrate layer at cutting edge, and then tear-aiding layer is torn up by pushing, which helps to peel off release film adhered after product.
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