Extinction type self-adhesive surface protection film and manufacturing method thereof

Abstract

The invention discloses an extinction type self-adhesive surface protection film. The protection film comprises a self-adhesive layer, an intermediate layer and an anti-sticking layer, wherein the self-adhesive layer comprises ultra low density polyethylene which is used as a main material, and one or two materials which are selected from a copolymer of ethylene and methyl acrylate as well as flexible polypropylene; the intermediate layer comprises an ethylene-propylene copolymer with few fish-eyes or the ethylene-propylene copolymer with few fish-eyes and polyethylene; the anti-sticking layer comprises polypropylene and high density polyethylene or an extinction master batch. The invention also discloses a method for manufacturing the extinction type self-adhesive surface protection film. The method comprises the following steps in order: dedusting of raw materials, automatic weighing and metering of raw materials, heating and extrusion, high-efficiency filtering, co-extrusion and film formation, cooling and sizing, automatic gauge control, trimming and rolling, and cutting and packaging. The extinction type protection film has few fish-eyes and good self-adhesion, and residual adhesive or shadows are not remained on the surface of the products to be protected. The film can be widely applied to surface protection fields of optical sheet materials, household electrical appliances, electronic products, stainless steel and other products.

Description

technical field [0001] The invention relates to the field of self-adhesive protective films, in particular to a matting self-adhesive surface protective film and a manufacturing method thereof. Background technique [0002] At present, domestic protective film products are mainly concentrated in the traditional protective film market, and most of them are glue-type protective films. The self-adhesive protective films used in flat-panel displays and high-tech electronics industries have not yet been industrialized in China, and still rely on Japan. ,imported from Korea. As my country has gradually become the world's largest producer of liquid crystal displays, there is a large demand for self-adhesive protective films. Only the self-adhesive protective films for the most high-end diffusion films and prism films have an annual demand of about 60,000 tons. According to relevant institutions Its annual growth rate is predicted to be more than 14%, therefore, it has great market ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a matting type self-adhesive surface protection film and its manufacturing method, to solve the problem that the existing self-adhesive protective film has poor matting effect, there are many crystal points at the same time, and residual glue or pictures are left on the protected surface after peeling off. question

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