MOLDING METHOD OF DOUBLE WALL CONTAINER

摘要

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to mold a double wall container so as to make the thickness of the skin comprising outer and inner skins same because a temperature difference is caused heretofore between the outer and inner molds of a mold as well as between the upper and lower parts of the inner mold when the double wall container is molded in a hot air oven type rotary mold and the outer skin molded by the outer mold becomes thick and the lower part of the inner skin molded by the inner mold becomes thin. SOLUTION: In the method for molding the double wall container while rotating and heating the mold 1 of the double wall container housed in a hot air heating type oven 14, a duct 9 having a flange 10 provided to its upper part is inserted in the inner mold 4 of the mold 1 to be fixed to the mold 1 so as to provide a predetermined gap between the lower edge of the duct 9 and the base of the inner mold 4 and hot air is introduced into the lower part and bottom part of the inner mold 4 through the duct 9 to heat both parts of the inner mold 4 to mold the double wall container. COPYRIGHT: (C)2005,JPO&NCIPI