INJECTION MOLDING METHOD, INJECTION MOLDING APPARATUS, AND METHOD FOR CLEANING PLASTIC MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a molded article having no flaw from an aspect of quality by removing foreign matter or the like sticking to a plastic material. SOLUTION: In an injection molding method, a charged plastic material 15 is irradiated with X-rays or ultraviolet rays under vacuum and the irradiated cleaned plastic material 16 is used to be injection-molded.