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1. 发明公开

EP2554376A1 SURFACE PROTECTION FILM 审中-公开
标题翻译： OBERFLÄCHENSCHUTZFILM
公开(公告)号：EP2554376A1
公开(公告)日：2013-02-06
申请号：EP11762528.5
申请日：2011-03-10
申请人： Toray Advanced Film Co., Ltd.
发明人： NAGAE, Yoshikazu , SATOU, Junya , TOKUMARU, Miyuki , Imai, Shiro
IPC分类号： B32B27/32 , B32B25/08 , B32B27/00 , B65D65/42
CPC分类号： B32B27/08 , B32B27/20 , B32B27/302 , B32B27/308 , B32B27/32 , B32B2250/03 , B32B2270/00 , B32B2272/00 , B32B2274/00 , B32B2307/538 , B32B2307/72 , B32B2307/746 , B32B2307/748 , B32B2457/20 , Y10T428/24355 , Y10T428/24372
摘要： The present invention is intended to provide a surface protection film that has moderate adhesive properties for adherend bodies with a rough surface, has a rear surface with good slipping properties, and also has blocking resistance and good unwinding properties (decreased unwinding tension to enable easy, high-speed sticking of the film to an adherend without causing creases or flaws). The surface protection film according to the present invention has a three-layered composite structure including an adhesive layer, an interlayer, and a back layer, wherein the adhesive layer is formed of 35 to 90 wt% of a linear low density polyethylene, 5 to 50 wt% of a styrene-based elastomer, and 15 wt% or less of a tackifier, the interlayer formed mainly of a propylene-based resin, and the back layer formed mainly of the same propylene-based resin as that constituting the interlayer and/or a different propylene-based resin therefrom, and also wherein the back layer has a surface roughness of 3 µm or more in terms of ten-point average roughness (Rz).
摘要翻译：本发明旨在提供一种表面保护膜，其对于具有粗糙表面的被粘物体具有适度的粘合性，具有良好的滑动性能的后表面，并且还具有抗粘连性和良好的退绕性能（降低的退绕张力，高效地将胶片粘贴到被粘物上而不引起褶皱或缺陷）。根据本发明的表面保护膜具有包括粘合剂层，中间层和背层的三层复合结构，其中粘合剂层由线性低密度聚乙烯35至90重量％形成，至 50重量％的苯乙烯类弹性体和15重量％以下的增粘剂，主要由丙烯类树脂形成的中间层和主要由构成夹层的相同的丙烯类树脂形成的背层， /或不同的丙烯类树脂，并且其中背层以十点平均粗糙度（Rz）表示的表面粗糙度为3μm以上。

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