PRODUCTION OF INTEGRALLY MOLDED PRODUCT MADE OF POLYAMIDE RESIN

摘要

PROBLEM TO BE SOLVED: To produce an integrally molded product made of a polyamide resin excellent in mechanical strength, heat resistance and chemical resistance and also excellent in welding strength. SOLUTION: When an integrally molded product made of a polyamide resin obtained by performing the injection molding of a secondary molding material being the same or separate kind of a polyamide resin compsn. on the surfaces of a single or a plurality of primary molded products composed of a polyamide resin compsn. to weld the primary molded products and the molded product part composed of the secondary molding material, the surface temp. of the primary molded products at a time of the start of injection molding is set to the glass transition point of the polyamide resin compsn. in the primary molded product or higher but to load bending temp. or lower.