MANUFACTURE OF HOLLOW MOLDED PRODUCT AND HOLLOW MOLDING MACHINE

摘要

PURPOSE:To make all resin flow paths starting from an outlet of an extruder all through a die/core section forming an outlet of a crosshead resistance to high temperature heat and resistance to wear in the manufacturing method for a hollow molded product and for a hollow molding machine. CONSTITUTION:In a method for manufacturing a hollow molded product and in a hollow molding machine, a parison 13 is formed through a tungsten carbide film formed in all resin flow paths 11 and 12 of an adaptor 6 and a crosshead 7.