| abstract |
(57) Abstract: A composite molded article according to the present invention comprises an ethylene / α-olefin / non-conjugated polyene random copolymer comprising ethylene, an α-olefin having 3 to 20 carbon atoms and a non-conjugated polyene. A lightweight solid member obtained by foaming a rubber composition (1) containing a united rubber (A) and having a specific gravity of 0.8 to 1.0, and an ethylene / α-olefin / non-conjugated polyene random copolymer The rubber composition (2) containing the rubber (A) is foamed, and a sponge member having a specific gravity of 0.45 or less is joined to a composite molded article, or one of the two members, preferably a solid member, Further, the composite molded product is formed by joining or embedding a metal member, and has a tensile strength of 1.2 MPa or more at an interface between the sponge member and the lightweight solid member. The composite molded article is lightweight and has excellent adhesion at the interface between the lightweight solid member and the sponge member without deteriorating the physical properties of the rubber. |