| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection compression molding method for obtaining a molded article reduced in deformation such as warpage, a sink or the like from a crystalline thermoplastic resin. SOLUTION: In performing the injection compression molding of a thermoplastic resin selected from a polyacetal resin, a polybutylene terephthalate resin, a polyphenylene sulfide resin and a crystalline polymer, mold clamping is preliminarily performed up to a position expecting a compression width and the injection filling of the molten resin into a mold cavity is subsequently performed and, at a point of time when 50-95% of the total injection quantity for forming the molded article is subjected to injection filling, mold re-clamping is started and compression is continued during a period from the start of mold re-clamping to the completion of the cooling process of the molded article.
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