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    • 49. 发明申请
    • METHOD OF MAKING A MOLDED PLASTIC CONTAINER
    • 制造模塑塑料容器的方法
    • WO1996030190A1
    • 1996-10-03
    • PCT/US1996003167
    • 1996-03-07
    • RUPPMAN, Kurt, H., Sr.
    • B29C49/12
    • B29C49/4823B29C49/06B29C49/12B29C49/46B29C49/58B29C49/66B29C2049/4608B29C2049/6646B29K2067/00
    • A polyethylene terephthalate (PET) preform (11) having a capped cylindrical body (13), a threaded top and collared neck (19) is preheated to soften the PET. The preform (11) is placed in a split mold (26) whose walls are heated to a temperature between 150 DEG C and 177 DEG C. A stretch rod (35), inserted through the top of the preform (11), stretches the preform (11) axially until the preform is the length of the final product (49). The preform (11) is expanded using compressed ambient air, and is molded against the walls (27, 29) of the mold (26). The air is vented, and dry nitrogen at a temperature below -50 DEG C is injected into the molded preform (47) to purge and cool the molded preform (47) while maintaining pressure of at least 520 kPag. The molded preform (47) is held against the mold (36) to anneal the inner and outer surfaces of the molded preform (47). The nitrogen supply is shut off and the final product (49) is released from the mold (26).
    • 将具有封盖圆筒体(13),螺纹顶部和颈部颈部(19)的聚对苯二甲酸乙二醇酯(PET)预成型件(11)预热以软化PET。 将预成型件(11)放置在其壁被加热到150℃和177℃之间的分开模具(26)中。穿过预成型件(11)的顶部插入的拉伸杆(35) 预成型件(11)轴向地直到预制件是最终产品(49)的长度。 使用压缩的环境空气使预成型件(11)膨胀,并且模制在模具(26)的壁(27,29)上。 空气被排出,并且在低于-50℃的温度下将干燥的氮气注入到模制的预成型件(47)中以在保持至少520kPag的压力的同时吹扫和冷却模制的预成型件(47)。 模制的预成型件(47)被保持抵靠模具(36)以使模制的预制件(47)的内表面和外表面退火。 关闭氮气供应并且最终产品(49)从模具(26)释放。