surface protection film

A surface protection film and back layer technology, applied in flexible coverings, electronic equipment, applications, etc., can solve problems such as difficulty in peeling off, reduced adhesion, easy peeling, etc., and achieve good reproducibility and excellent sliding properties Effect
CN102834263BActive Publication Date: 2014-10-08TORAY ADVANCED FILM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TORAY ADVANCED FILM CO LTD
Publication Date
2014-10-08

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Abstract

The present invention provides a surface protective film which has suitable adhesion properties even to adherends with rough surfaces, and which is excellent in backside sliding properties, blocking resistance, unwinding properties (reducing unwinding tension, It does not wrinkle or scratch even when it is bonded to an adherend, and it can be bonded easily and at a high speed) is also excellent. The surface protective film of the present invention comprises a 3-layer composite form formed by an adhesive layer, an intermediate layer and a back layer, and the adhesive layer is composed of 35 to 90% by weight of linear low-density polyethylene, 5 to 50% by weight of styrene An elastomer and 15% by weight or less of a tackifier, the middle layer is mainly formed of acrylic resin, the back layer is mainly formed of the propylene resin forming the middle layer and / or different propylene resins, and the back layer The surface roughness is 3 μm or more in terms of ten-point average roughness (Rz).
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Description

technical field

[0001] The present invention relates to a surface protection film for preventing adhesion of stains or scratches on the surface of an adherend. More specifically, it relates to an adherend having a relatively rough surface, such as a diffusion plate or a diffusion film used in the field of optics, having suitable adhesive properties, and the back surface It is a surface protection film with excellent sliding properties and excellent handling properties such as blocking resistance and unwinding characteristics. Background technique

[0002] When processing and transporting synthetic resin sheets, metal sheets, coated steel sheets, and various signs, etc., surface protection films are used to prevent stains from adhering to or scratching the surfaces of these products.

[0003] In particular, in recent years, ultra-thin displays such as liquid crystal displays are often used as display devices such as personal computers and televisions. The ultra-thin displays...

Claims

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