POLYPROPYLENE RESIN COMPOSITION FOR HEAT-RESISTANT BIAXIALLY ORIENTED MATTE FILM AND BIAXIALLY ORIENTED FILM PREPARED THEREFROM

摘要

PROBLEM TO BE SOLVED: To provide a polypropylene resin compsn. which, when formed into a film, gives a biaxially oriented matte film having a sufficient roughness and a good heat resistance. SOLUTION: This compsn. comprises 60-90 wt.% propylene homopolymer (A) and 40-10 wt.% high-density polyethylene (B), and the melt viscosity (measured at 230 deg.C at a shear rate of 100 sec-1) of ingredient B is higher than that of ingredient A by at least 500 Pa.s.