Matte release agent for release materials

Abstract

The invention discloses a matte release agent used for mold release material. The matte release agent is arranged between a release film and a mold release agent layer and comprises the following components in percentage by weight: 2%-6% of silica particles, 20%-30% acrylic polyol with average molecular weight of 500-2000, 35%-45% of polyoxyalkylene series polyol resin with molecular weight of 200-2500, 15%-20% of polyethyleneglycol, and 5%-10% of 1-hydroxy cyclohexyl phenyl ketone-photoinitiator 184; wherein the particle diameters of the silica particles have peak values in ranges of 0.1-0.2 um and 1.5-5 um respectively and the average particle diameter is 4 um or less, according to the particles distribution of the silica particles measured by a laser diffraction scattering method. According to the matte release agent provided by the invention, the binding force between a lamination layer of a release paper and the mold release agent is improved, the release force is stable, the anti-static performance of the film surface is improved, and the scratch resistance is simultaneously improved.

Description

Technical field [0001] The invention relates to a release agent, in particular to a matte release agent for release materials. Background technique [0002] Release paper, also known as release paper and release paper, is mainly used to cover the surface of the tape to protect the adhesive layer on the surface of the tape. The existing release paper is generally coated with a coating layer on the surface of the bottom paper layer of the release paper (the material used is mainly polyethylene), and then a coating of release agent is coated on the surface of the coating layer (The material used is mainly silicone oil) to obtain release paper. However, due to the high flatness of the coating layer, the adhesion between the release agent coating and the coating layer is poor. When the release paper is attached to the film coated with a high-viscosity adhesive, it is easy to cause the release paper The release agent coating is taken away by the adhesive with greater adhesion, so tha...

AI Technical Summary

Problems solved by technology

However, due to the high flatness of the coating layer and the poor adhesion between the release agent coating and the coating layer, when the release paper is attached to the film coated with a high-viscosity adhesive, it is easy to cause cracks on the release paper. The release agent coating is taken away by the adhesive with greater adhesion, thus forming a difficult-to-clean release agent coating area on the local surface of the film, destroying the overall purity and consistency of the film

Moreover, due to the excessive static electricity in the production process, the release coating layer is partially uneven, which not only affects the stability of the peeling force of the product, but also easily generates static sparks and causes fires.

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