| 摘要 |
PROBLEM TO BE SOLVED: To enhance the strength of various kinds of materials above the strength level of the conventional ones and promote reduction in thickness of a resin molding. SOLUTION: A bathtub 10 is composed of a surface layer 13 positioned on the lower side of a molded laminate as shown in Fig. 1, a reinforcing layer laminated on the surface layer 13 in Fig. 1 and a reinforcing material 15 partially interposed between the surface layer 13 and the reinforcing layer 14. The reinforcing material 15 is formed by impregnating an urethane foam 20 with an unsaturated polyester resin M and curing the resin M.
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