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1. 发明公开

EP2554614A1 SURFACE PROTECTION FILM 审中-公开
标题翻译：表面保护膜
公开(公告)号：EP2554614A1
公开(公告)日：2013-02-06
申请号：EP11762527.7
申请日：2011-03-10
申请人： Toray Advanced Film Co., Ltd.
发明人： NAGAE, Yoshikazu , SATOU, Junya , IMAI, Shiro
IPC分类号： C09J7/02 , B32B27/30 , B32B27/32 , C09J109/06 , C09J123/08
CPC分类号： C09D125/08 , C08L9/06 , C09J7/243 , C09J7/29 , C09J7/387 , C09J2201/162 , C09J2423/006 , C09J2423/106 , C09J2427/006 , C09J2453/00 , Y10T428/25 , Y10T428/2848 , Y10T428/2878 , C08L2666/06
摘要： The present invention provides a surface protection film that has moderate adhesive properties for bonding to adherend bodies with a rough surface, has a rear surface with good slipping properties, and also has blocking resistance and good unwinding properties. The surface protection film according to the present invention has a laminated structure formed at least of an adhesive layer and a back layer, wherein the adhesive layer is formed mainly of a styrene-based elastomer while the back layer is formed mainly of a propylene-based resin containing 0.5 wt% to 10 wt% of a fluorine-containing compound having a polyfluorohydrocarbon group and a polyoxy ethylene group, the back layer having a surface roughness of 3 µm or more in terms of ten-point average roughness (Rz), an initial adhesion strength of 1 N/25 mm or more to a #320 hair-line-finished SUS 304 plate, and an unwinding force of 0.5 N/25 mm or less for winding off a film wound up in a roll.
摘要翻译：本发明提供一种表面保护膜，其具有用于粘合具有粗糙表面的被粘体的适度粘合性，背面具有良好滑动性，并且还具有抗粘连性和良好的解绕性。根据本发明的表面保护膜具有至少由粘合剂层和背层形成的叠层结构，其中粘合剂层主要由苯乙烯类弹性体形成，而背层主要由丙烯类形成含有0.5重量％〜10重量％的具有多氟烃基和聚氧乙烯基的含氟化合物的树脂，所述背面层的表面粗糙度以十点平均粗糙度（Rz）计为3μm以上，对＃320发纹SUS 304板的初始粘合强度为1N / 25mm以上，对卷绕成卷的薄膜进行卷取时的退绕力为0.5N / 25mm以下。

2. 发明公开

EP2559745A1 SURFACE PROTECTIVE FILM 审中-公开
标题翻译：表面保护膜
公开(公告)号：EP2559745A1
公开(公告)日：2013-02-20
申请号：EP11768688.1
申请日：2011-03-10
申请人： Toray Advanced Film Co., Ltd.
发明人： ASADA, Yoshiyasu , TERAUCHI, Hiroshi , IMAI, Shiro
IPC分类号： C09J7/02 , B32B27/28 , B32B27/32 , C09J123/08
CPC分类号： C09J123/0815 , B32B7/12 , B32B27/08 , B32B27/308 , B32B27/32 , B32B2270/00 , B32B2457/00 , C09J7/29 , C09J123/0869 , C09J2201/122 , C09J2201/622 , C09J2203/318 , C09J2423/04 , C09J2423/046 , C09J2423/106 , G02B1/105 , G02B1/14 , Y10T428/24355
摘要： The invention provides a surface protective film having a laminated structure including an adhesive layer, a back layer, and a middle layer, that does not cause an increase in adhesion strength to optical films, such as polarizers and retardation films, which must achieve a high standard of quality so that adherends will suffer from no dents or no deformation caused particularly by minute fisheye defects and roll-up creases. Furthermore, the surface protective film does not contaminate adherends, nor cause any defects such as dents and deformations in adherends.
To solve the abovementioned problem, the present invention employs the following means. Specifically, the surface protective film of the present invention comprises a three-layer laminated structure including an adhesive layer, a middle layer and a back layer, wherein the adhesive layer is formed from an ethylene-α-olefin copolymer, an ethylene-methyl methacrylate copolymer, or a mixture thereof, the middle layer is formed primarily from a polyethylene-based resin having a density of 0.870-0.935 g/cm 3 , an ethylene-methyl methacrylate copolymer, or a mixture thereof; and the back layer is formed from a polypropylene-based resin and a low-density polyethylene. The back layer has a surface with an arithmetic average roughness (Ra) of 0.6 µm or more and a ten-point average roughness (Rz) of 4 µm or more.
摘要翻译：本发明提供一种具有包括粘合剂层，背层和中间层的层压结构的表面保护膜，其不会引起对必须达到高的偏振器和延迟膜等光学膜的粘合强度的增加质量标准，以使被粘物不会受到凹痕或没有特别是由微小鱼眼缺陷和卷起褶皱引起的变形。此外，表面保护膜不会污染被粘物，也不会引起任何缺陷，如被粘物中的凹陷和变形。为了解决上述问题，本发明采用以下手段。具体而言，本发明的表面保护膜包括三层层压结构，该三层层压结构包括粘合剂层，中间层和背层，其中粘合剂层由乙烯-α-烯烃共聚物，乙烯 - 甲基丙烯酸甲酯共聚物或它们的混合物，中间层主要由密度为0.870-0.935g / cm 3的聚乙烯基树脂，乙烯 - 甲基丙烯酸甲酯共聚物或其混合物形成; 并且背层由聚丙烯基树脂和低密度聚乙烯形成。背面层的算术平均粗糙度（Ra）为0.6μm以上，十点平均粗糙度（Rz）为4μm以上的表面。

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