In order that the bathtub of European style and hollow

摘要

PROBLEM TO BE SOLVED: To provide a resin molded product of which the strength is ensured by providing a layered structure of high strength constituted by successively laminating a skin layer, a core material and a heat insulating material at all of the regions of the resin molded product, and its manufacturing method.;SOLUTION: The heat insulating material 3 is embedded in the core material 4 so that at least the surface and whole peripheral edge face thereof are not exposed to form a core layer 2. The skin layer 5 becoming an outer skin is laminated and integrated so as to surround the core layer 2.;COPYRIGHT: (C)2007,JPO&INPIT