| abstract |
(57) [Summary] [PROBLEMS] To provide a method for producing a crosslinked foamed olefin elastomer composition in which a foaming agent is uniformly dispersed, the number of pinholes is small, and the tensile strength is excellent. [Structure] Polypropylene and ethylene-propylene- When producing a foam from a composition comprising a diene copolymer rubber and a foaming agent, first, polypropylene and ethylene-propylene-diene copolymer rubber are kneaded so that the foaming agent is in a significantly thickened state. Is prepared in advance, and the resin component is mixed with a resin component so as to have a desired expansion ratio to form a composition for crosslinked foam, and a molded product obtained from this composition is radiation-crosslinked and then heat-foamed. . |