Abstract: A method of producing interior and exterior structural members of automobiles composed of rigid polyurethane foam, which comprises foaming a composition comprising:(a) polyisocyanates selected from the group consisting of diphenylmethane diisocyanate, polyphenylenepolymethylene polyisocyanate and their modified products; and(b) polyols which have a hydroxyl value of 400-550 and contain an ethylene oxide adduct to hydroquinone having a hydroxyl value of 60-430 in amounts of 20-40% by weight based on the polyols, the adduct being represented by the general formula of ##STR1## wherein m and n are integers of not less than 1, respectively. The resultant rigid polyurethane foams have high heat resistance and toughness as well as high mechanical properties, but have no voids therein.

Abstract: A resin coating of a wire harness is shaped in the following manner. A laminated sheet formed by integrally laminating an outer skin sheet made of semi-hard resin and an unfoamed foamable sheet made of foamable resin material, is placed along a cavity wall surface of a shaping mold with the foamable sheet directed to the inside, a bundle of wires having terminals, connectors or the like attached to their opposite ends are disposed within a space defined by the laminated sheet, and by heating the shaping mold the foamable sheet is heated and foamed. A protective coating layer made of foamed resin and protective coating layer made of an outer skin sheet can be simultaneously shaped by the mold.