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-.alpha.-olefin copolymer having a tensile stress M.sub.100 measured according to JIS-K-6251 of 2.5 MPa or less, (B) a polyolefin-based resin having a tensile stress M.sub.100 measured according to JIS-K-6251 of 2.5 MPa or more.

Uma composição thermoplastic do elastomer que compreende 5 a 95 pesos % do seguinte (A) e 5 a 95 pesos % do seguinte (b), wherein o índice I do flowability de acordo com um teste para propriedades do fluxo com um rheometer capilar é 1.35 ou mais: (A) um copolymer de ethylene-.alpha.-olefin que têm um stress tensile M.sub.100 medido de acordo com JIS-K-6251 de 2.5 MPa ou mais menos, (B) uma resina polyolefin-baseada que tem um stress tensile M.sub.100 medido de acordo com JIS-K-6251 de 2.5 MPa ou mais.

 
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