MANUFACTURING METHOD FOR PET BOTTLE FOR ASEPTIC FILLING

摘要

PROBLEM TO BE SOLVED: To reduce a cost for imparting heat resistance as compared with a bottle corresponding to conventional hot filling with respect to a PET bottle used in an aseptic filling system to allow the PET bottle to sufficiently correspond to heating in a hot warmer.;SOLUTION: A preform 1A injection-molded from a resin material based on polyethylene terephthalate is mounted in a mold, and compressed air is blown in the preform to perform stretch blow molding. The part excepting the mouth neck 11 of the bottle 1 in the mold subjected to stretch blow molding is heated by molds 22 and 23 held to a predetermined temperature to apply heat set treatment enhancing the degree of crystallization of a resin.;COPYRIGHT: (C)2004,JPO