| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a propylene resin film for surface protection which has remarkably few fish eyes, excellent anti-blocking property even when an anti-blocking agent is not used, excellent transparency, improved peeling force controllability and delivery performance. <P>SOLUTION: In the film for surface protection, an adhesive layer is formed on one side of a substrate layer and a peeling treatment layer is formed on the other side. The substrate layer is polymerized using a metallocene catalyst and is formed of a propylene resin having a specified MFR, a specified fusion peak temperature, a specified Mw/Mn, and a specified soluble portion at ≤40°C in TREF method. The adhesive layer is formed of a propylene-ethylene block copolymer obtained by sequentially copolymerizing using a metallocene catalyst into a propylene single polymer or a propylene-ethylene random copolymer in a first step and the propylene-ethylene random copolymer in a second step and having specific MFR characteristics and specific DMA characteristics. The peeling treatment layer is formed of a silicone based or a long chain alkyl based peeling treatment agent. <P>COPYRIGHT: (C)2009,JPO&INPIT |
