Release film for polaroid

Abstract

The invention discloses a release film for a polaroid. The release film comprises a release film base material and a release agent layer coated on the surface of the release film base material, and the release agent layer is prepared from an ultraviolet light curing release agent prepared from the following raw materials in parts by weight: 60-140 parts of polybutadiene polyurethane, 45-85 parts of polyacrylate resin, 10-25 parts of hydroxypropyl methacrylate, 25-55 parts of a trifluoroethyl methacrylate active monomer diluent, 25-55 parts of an octadecyl methacrylate active monomer diluent and 1-5 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone serving as an initiator. The ultraviolet curing release agent is an ultraviolet curing release agent without a silicone oil component, high-temperature baking is not needed, no silicone oil seeps out, and the phenomenon that the PAS adhesive is pulled up due to transfer of the silicone oil component is completely eradicated.

Description

technical field

[0001] The present application relates to polarizers in the field of optical display, in particular to a release film used for polarizers. Background technique

[0002] Polarizer is an indispensable part in the field of optical display, such as LCD display, and it is a film with polarizing function that only allows light in a certain direction to pass through.

[0003] figure 1 Shows a schematic structural view of a polarizer that can be used in the present invention, including a protective film 1, a first TAC protective layer 2 and a second TAC protective layer 4, a PVA polarizing layer 3, a PSA pressure-sensitive adhesive layer 5 and a release film 6.

[0004] The polarizing function in the polarizer is the PVA polarizing layer 3, the main components are PVA (polyvinyl alcohol) and iodine, generally called iodine-based polarizing film. Polyvinyl alcohol is used as a polarizing film because of its good transparency, extremely low polar moisture permeabili...

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