A thermoplastic elastomer composition comprising 5 to 95 wt % of the following (A) and 5 to 95 wt % of the following (B), wherein the flowability index I according to a test for flow properties with a capillary rheometer is 1.35 or more:
(A) an ethylene-&agr;-olefin copolymer having a tensile stress M
100
measured according to JIS-K-6251 of 2.5 MPa or less,
(B) a polyolefin-based resin having a tensile stress M
100
measured according to JIS-K-6251 of 2.5 MPa or more.
一种热塑性弹性体组合物,包括 5 至 95 wt % 的下列物质(A)和 5 至 95 wt % 的下列物质(B),其中用毛细管流变仪测试流动性能的流动性指数 I 为 1.35 或以上:
(A)
乙烯-烯烃共聚物,其拉伸应力 M
100
根据 JIS-K-6251 测得的拉伸应力 M100 为 2.5 兆帕或以下的
乙烯-&agr;-烯烃共聚物、
(B) 聚烯烃基
树脂,其拉伸应力 M
100
根据 JIS-K-6251 测量,其拉伸应力 M100 为 2.5 兆帕或以上。