| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of a defect such as 'burn mark', 'black spot' or 'voids' in a molded article to be obtained by injection molding. SOLUTION: In an injection molding method wherein a molding material is dried and subsequently melted to be injected in a mold to mold a molded article having a predetermined shape, the molding material contains 0.05-0.9 wt.% of a phenolic and/or phosphoric oxidation inhibitor and is melted while inert gas is supplied, melted in a vacuum state or heated and dried in a vacuum state. By this constitution, an injection-molded article having good quality free from a defect such as 'burn mark', 'black spot', 'voids' or the like is molded.
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