MOLDED PRODUCTS REINFORCED WITH FOAM AND MANUFACTURING METHOD FOR THEM.

摘要

Molded products with improved rigidity and a manufacturing method in which hollow moldings formed from highly heat-resistant functional resin are filled with highly heat-resistant expandable thermoplastic resin particles which are then expanded and fused are provided. The invention is characterized by a manufacturing method for foam-reinforced molded products wherein a tubular body for introducing steam is inserted in a hollow molding of highly heat-resistant resin, the molding is packed with highly heat-resistant expandable thermoplastic resin particles and fitted in a jig with an internal structure corresponding to the mold cavity, and large amounts of steam are introduced through the tubular body, thereby expanding and fusing the expandable thermoplastic resin particles packed in the molding. The invention is also characterized by molded products obtained by this manufacturing method in which the expandable thermoplastic resin particles are expanded and fused until they contact the inner walls of the hollow molding. <IMAGE>