BLOW INJECTION MOLDING METHOD AND MOLD

摘要

PURPOSE: To prevent ununiform gloss from being generated along a hollow part when a blow molded product is molded by blow injection molding. CONSTITUTION: Pressurized gas is force fitted in molten resin injected into a mold cavity 1 to squeeze out the molten resin remaining in excess in the mold cavity 1 outside the mold cavity 1. Then, pressure in a hollow part 11 is instantaneously lowered.