POLYPROPYLENE-MADE AIR BAG COVER

摘要

PROBLEM TO BE SOLVED: To inexpensively provide a polypropylene-made air bag cover excellent in appearance and extensibility. SOLUTION: This air bag cover contains 57 to 63 wt.% propylene block copolymer component (I) consisting of propylene-ethylene random copolymer (A) of 2 to 5 wt.% ethylene content and propylene-ethylene random copolymer (B) of 20 to 30 wt.% ethylene content and 43 to 37 wt.% olefin synthetic rubber component (II). A content rate of the (B) is within a range of 18 to 23 wt.%. 0.05 to 0.1 pts.wt. of a molecular weight depressant is added relating to total 100 pts.wt. of the (I), (II).