| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a polyamide resin molded article in producing an injection-type polyamide molded article by polymerizing a polymerizable lactam liquid in a mold while pressurizing by a pressurizing parts so as to prevent a sink caused by polymerization shrinkage and to prevent occurrence of a void or the like caused by shortage of pressure originated from friction between raw material and mold. SOLUTION: The method comprises compounding of an external lubricant to a polymerizable lactam in a method for producing a polyamide resin molded article by polymerizing a polymerizable lactam liquid, that is prepared by adding at least an anionic polymerization catalyst and an anionic polymerization initiator to a practically non-aqueous lactam, by introducing the liquid into a cavity 13 of the mold, by inserting a pressurizing part 24 into the opening and then by pressurizing/heating. COPYRIGHT: (C)2006,JPO&NCIPI |
