Polyolefin resin composition and stretched film thereof

摘要

A polyolefin resin composition comprising (A) 100 parts by weight of a polyolefin resin, (B) 0.05 to 1.0 part by weight of crosslinked polymer particles having a volume-average particle size of 0.3 to 10 mu m which comprise (1) 1 to 50% by weight of a radical polymerizable monomer unit containing a carboxyl group in the polymer chain, (2) 49 to 98% by weight of a radical polymerizable monomer unit other than the unit (1), and (3) 1 to 20% by weight of a crosslinking monomer unit, and (C) 0.01 to 5 parts by weight of an acid-modified polyolefin resin having an acid value of 1.0 to 100 mg-KOH/g as specified in JIS K0070, a stretched film obtained therefrom, and a biaxially stretched film whose surface layer comprises the polyolefin resin composition. The stretched films have improved suitability to high speed automatic packaging.