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    • 75. 发明公开
    • 점착 필름
    • 压力敏感胶片
    • KR1020090086067A
    • 2009-08-10
    • KR1020097009244
    • 2007-10-19
    • 도요보 가부시키가이샤
    • 가와이,겐지마츠다,아끼라오기,히로까즈사꼬,유까이마이,도오루이와사끼,쇼오이치
    • C09J7/02
    • C09J7/22C09J7/38C09J2423/006C09J7/00C09J2205/10
    • [PROBLEMS] To provide a pressure sensitive adhesive film that is low in the change of adhesive strength between a stage immediately after application to an adherend and a stage after aging and that is impervious to storage conditions when the pressure sensitive adhesive film is stored in rolled form. [MEANS FOR SOLVING PROBLEMS] The pressure sensitive adhesive film is characterized by being an oriented polypropylene resin film of a laminate consisting of a base layer of polypropylene resin provided at its surface with a pressure sensitive adhesive layer wherein the pressure sensitive adhesive layer at its surface has an average roughness, SRa, of 0.032 mum or less, and wherein the pressure sensitive adhesive layer at its surface has a dynamic hardness of 0.15 to 1.4 gf/mum2, and wherein the thickness variability rate in the lateral direction perpendicular to the take-up direction at film production is in the range of 2.0 to 7.5%, and wherein the amount of low-molecular-weight substances on the surface of the pressure sensitive adhesive layer is less than 1 mg/m2. ® KIPO & WIPO 2009
    • [问题]提供一种压敏粘合剂膜,其在施加到被粘物之后的阶段与老化后的阶段之间的粘合强度的变化小,并且当压敏粘合剂膜保存在轧制中时不受储存条件的影响 形成。 解决问题的手段压敏粘合剂膜的特征在于:在其表面设置有压敏粘合剂层的由聚丙烯树脂的基底层构成的层压体的取向聚丙烯树脂膜,其中在其表面的压敏粘合剂层 平均粗糙度SRa为0.032μm以下,其表面的压敏粘合剂层的动态硬度为0.15〜1.4gf / m 2,并且其中,垂直于卷取面的横向的厚度变化率, 薄膜制造时的上下方向为2.0〜7.5%的范围,并且其中粘合剂层表面上的低分子量物质的量小于1mg / m 2。 ®KIPO&WIPO 2009