| 摘要 |
PROBLEM TO BE SOLVED: To provide an air bag storage cover having safety reliability, adaptability in a wide temperature range, durability, and desirable touch and capable of high productivity and low cost without being painted. SOLUTION: This air bag device storage cover is made of an injection molding of a thermoplastic elastomer and has an air bag storage recess on the inside and an expected rupture section of a fragile structure. The thermoplastic elastomer is a polyurethane elastomer having the Shore D hardness of 20-70 and copolymerized with (a) specific polycarbonate diol, (b) specific polyisocyanate, and as required (c) a specific chain extending agent having two activated hydrogen reactable with polyisocyanate. |
