| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a surface protective film that can obtain uniform adhesive strength and is easily drawn out from a wound body while maintaining sufficient adhesive strength.SOLUTION: A surface protective film of the present invention includes a polyolefin substrate layer and an adhesive layer. The adhesive layer contains a mixed styrene-based elastomer comprising at least a first styrene-based elastomer having a glass transition temperature of -40°C or more and a second styrene-based elastomer having a glass transition temperature of less than -40°C,and a tackifier. The hardness (Martens hardness) of the adhesive layer is 0.4 N/mmor less, and the loop tack is 0.2 N/25 mm or more and 1.0 N/25 mm or less.</p> |
