METHOD FOR MANUFACTURING INJECTION FOAMED MOLDED OBJECT

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing an injection foamed molded object, improved so as to prevent the generation of a sink or a silver streak defect. SOLUTION: In the method for manufacturing the injection foamed molded object by melting and kneading a thermoplastic resin containing a chemical foaming agent in a cylinder to inject the same in a mold and cooling and solidifying the molten resin to mold the same, the temperature of the mold is set to 60 deg.C or higher. The chemical foaming agent is an inorganic chemical foaming agent and the thermoplastic resin is a propylene resin.