| 摘要 |
PURPOSE: To continuously produce a hollow container made of a saturated polyester resin. CONSTITUTION: To the bottom part of a biaxially stretched blow molded hollow container molded by biaxially stretching blow molding, a shield plate 2A having the shape fitted to the bottom part of the hollow container and having a slit is arranged and, by heating the bottom part of the hollow container from below through the slit, the bottom part of the hollow container is crystallized and, next, the shield plate 2A is detached from the hollow container and the bottom part of a new hollow container is heated and crystallized in the same way. The shield plate is not cooled at the time of heating but cooled or allowed to stand to cool before the heating for crystallization of the hollow container succeeding to the completion of heating. |
