High transparency type self-adhesive surface protection film and manufacturing method thereof

A surface protective film, self-adhesive technology, applied in the field of high-transparency self-adhesive surface protective film and its manufacturing, can solve the problems of many crystal points and low transparency, and achieve high transparency, fewer crystal points on the film surface, and crystal size. small effect

Active Publication Date: 2016-09-28
永新股份(黄山)包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a highly transparent self-adhesive surface protective film and its manufacturing method to solve the problem of many crystal points and low transparency of the existing self-adhesive protective film

Method used

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  • High transparency type self-adhesive surface protection film and manufacturing method thereof
  • High transparency type self-adhesive surface protection film and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A highly transparent self-adhesive surface protective film, comprising a self-adhesive layer, an intermediate layer and an anti-adhesive layer, the self-adhesive layer is made of ultra-low density polyethylene and soft polypropylene with a mass percentage of 90:10; The middle layer is made of highly transparent copolymer polypropylene, and the anti-sticking layer is made of random ethylene-propylene copolymer.

[0020] The thickness of the self-adhesive layer is 5% of the total thickness, the thickness of the intermediate layer is 85% of the total thickness, and the thickness of the release layer is 10% of the total thickness.

Embodiment 2

[0022] A highly transparent self-adhesive surface protective film, including a self-adhesive layer, an intermediate layer and a release layer. The self-adhesive layer is composed of ultra-low density polyethylene and soft polypropylene with a mass percentage of 85:15; the intermediate layer is composed of high-transparent copolymer polypropylene, and the anti-adhesive layer is composed of random ethylene-propylene copolymer .

[0023] The thickness of the self-adhesive layer is 15% of the total thickness, the thickness of the intermediate layer is 70% of the total thickness, and the thickness of the release layer is 15% of the total thickness.

Embodiment 3

[0025] A highly transparent self-adhesive surface protective film, including a self-adhesive layer, an intermediate layer and a release layer. The self-adhesive layer is made of ultra-low density polyethylene and soft polypropylene with a mass percentage of 80:20; the intermediate layer is made of high-transparent copolymer polypropylene, and the anti-adhesive layer is made of random ethylene-propylene copolymer .

[0026] The thickness of the self-adhesive layer is 30% of the total thickness, the thickness of the intermediate layer is 60% of the total thickness, and the thickness of the release layer is 10% of the total thickness.

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Abstract

The invention discloses a high transparency 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 and flexible polypropylene; the intermediate layer is prepared by high-transparency copolymerized polypropylene, and the anti-sticking layer is prepared by a ethylene-propylene random copolymer. The invention also discloses a method for manufacturing the high transparency 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, defect detection, trimming and rolling, aging treatment, and cutting and packaging. The high transparency type protection film has the characteristics of few fish-eyes, good self-adhesion, and high transparency. The film can be widely applied to surface protection fields of transparent optical sheet materials, high gloss paint surface, and other products.

Description

Technical field [0001] The invention relates to the field of self-adhesive protective films, in particular to a highly transparent 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 glued protective films. Self-adhesive protective films used in flat-panel displays and high-tech electronics industries have not yet been industrialized in China. They still rely on Japanese ,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 highest-end diffuser films and self-adhesive protective films for prism films require about 60,000 tons per year. According to relevant agencies The annual growth rate is predicted to be 14% or more, so it has great market potential. [0003] In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/08B32B7/10B29D7/01
CPCB29D7/01B29D2009/00B32B7/10B32B27/08B32B27/32B32B2250/03B32B2250/242B32B2307/412
Inventor 潘健陈付兵高淼曹斐叶青松
Owner 永新股份(黄山)包装有限公司
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