| 摘要 |
An injection stretch blow molding method blow molds a preform into a hollow member while maintaining the preform at a temperature provided by an injection molding step. The method circulatively conveys neck mold support plates (22) each for supporting and conveying a neck mold (24) holding the neck portion of the hollow member or preform through working stations of M in number (M>/=3) including at least injection molding (10) and blow molding stations (14). The total number N of neck mold support plates (22) is set to be 2</=N<M. The neck mold support plates (22) are conveyed among the working stations other than the injection molding station (10) within an injection molding time T for which an injection molding step is carried out using a neck mold support plate (22) placed in the injection molding station (10). Before elapse of the injection molding time T, a neck mold support plate (22), which has ejected the molded hollow member, is caused to wait at a station before the injection molding step. After passage of the injection molding time T, two neck mold support plates (22) resident in the injection molding station (10) and another working station before the injection molding station are simultaneously conveyed to subsequent stations. <IMAGE> |
