| abstract |
PROBLEM TO BE SOLVED: To provide a surface that can be rolled up without wrinkles even when having a strong adhesive force, and can be easily unfolded when used again from a roll. To provide a protective film. A surface protective film having a base material layer and an adhesive layer, wherein the base material layer comprises a propylene resin (A1), an ethylene resin (A2), and a methylpentene resin (A3). And the ethylene-based resin (A2) is mainly composed of a resin mixture contained in an amount of 5% by mass or more based on the total mass of the (A1), the (A2), and the resin (A3). And the adhesive layer is a styrene elastomer (B1), a block copolymer (B2) comprising a crystalline olefin polymer block and a conjugated diene polymer block, or an amorphous α-olefin polymer (B3). ) Containing a surface protective film. [Selection figure] None |