AIR-BAG COVER AND OLEFINIC THERMOPLASTIC ELASTOMER THEREFOR

PROBLEM TO BE SOLVED: To obtain an air-bag cover capable of being produced by a simple single step process, excellent in expansion in a wide range of temperatures in use thereof, abrasion resistance and scratch resistance, and good in molded appearance by uniformly molding a base material layer such...

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Hauptverfasser:	KOBAYASHI KYOKO, UKAI JUNZO, UCHIYAMA AKIRA, TAKAHASHI HIDEAKI, OSHITA NAOKI, NISHIMURA HIDEO, TAKEHARA TORU
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain an air-bag cover capable of being produced by a simple single step process, excellent in expansion in a wide range of temperatures in use thereof, abrasion resistance and scratch resistance, and good in molded appearance by uniformly molding a base material layer such as an instrument panel and an olefinic thermoplastic elastomer. SOLUTION: This air-bag cover is obtained by uniformly molding (I) an olefinic thermoplastic elastomer containing (A) 15-60 pt.wt. polypropylene resin, (B) 10-50 pt.wt. ethylene-α-olefinic amorphous copolymer having 50-110 Mooney viscosity ML1+4 (100 deg.C), (C) 10-50 pt.wt. above copolymer having 130-170 above viscosity, (D) 2-20 pt.wt. propylene-1-butene-based low crystalline copolymer having 10-30% X-ray crystallinity and (E) 5-50 pt.wt. mineral oil-based softening agent, with (II) a base material layer containing a polypropylene resin.