Patent ID: 8592046

Claim:
A surface protective film comprising: a polyolefin base material layer; and an adhesion layer laminated on the polyolefin base layer, wherein the adhesion layer comprises: a vinyl-polyisoprene-block-containing styrene elastomer; a polyolefin; and a tackifier, wherein a mass ratio of the polyolefin relative to the vinyl-polyisoprene-block-containing styrene elastomer is 0.1 or more and 2 or less, and wherein a hardness (Martens hardness) of the adhesion layer is 1.0 N/mm 2 or more and 2.5 N/mm 2 or less, and wherein the adhesion layer has adhesion properties such that it is capable of being adhered to an adherend but also capable of being peeled off of an adherend.