Formation manner of the hollow formation item and the die null hollow formation item for formation

摘要

PROBLEM TO BE SOLVED: To provide a method for stably molding a hollow molded product even when the filling with a molten resin in the molding of a split body and the filling with the molten resin in the mutual welding of split bodies are performed at the same time, and a mold used therein.;SOLUTION: When secondary filling for welding is completed, primary filling is continued through runners 131A and 131C, and a revolving plate 136 is revolved from the state shown by Fig (a) to the state shown by Fig (b) to cut off the runner 131B to stop secondary filling. Accordingly, after the secondary filling for mutually welding split bodies is completed, a filling condition suitable for molding the split body can be adapted only to the primary filling.;COPYRIGHT: (C)2005,JPO&NCIPI