Foam processable rubber compositions and vulcanized rubber foam molded products of the same

A foam processable rubber composition which comprises

• 100 parts by weight of an ethylene/.alpha.-olefin of 3 to 20 carbon atoms/non-conjugated polyene copolymer rubber (A),
• 5 to 50 parts by weight of a crystalline polyolefin resin (B) having a melting point (Tm), as measured by DSC, of 100 to 150.degree. C.,
• 0.5 to 50 parts by weight of a foaming agent (C), and a vulcanizing agent (D);
• wherein the ethylene/.alpha.-olefin/non-conjugated polyene copolymer rubber (A) has the following properties:
• (a) the molar ratio of ethylene to the .alpha.-olefin of 3 to 20 carbon atoms (ethylene/.alpha.-olefin) is in the range of 60/40 to 80/20,
• (b) the intrinsic viscosity (.eta.), as measured in decahydronaphthalene at 135.degree. C., is in the range of 0.7 to 2 dl/g, and
• (c) the iodine value is in the range of 10 to 50;
• and
• wherein the foam processable rubber composition is obtained by kneading a mixture comprising the ethylene/.alpha.-olefin/non-conjugated polyene copolymer rubber (A) and the crystalline polyolefin resin (B) with the foaming agent (C) and the vulcanizing agent (D) at a temperature of 40 to 80.degree. C.