Continuous production of container preforms
    6.
    发明申请
    Continuous production of container preforms 审中-公开
    连续生产容器预制件

    公开(公告)号:US20050029712A1

    公开(公告)日:2005-02-10

    申请号:US10634707

    申请日:2003-08-05

    摘要: A method of producing preforms for blow molding containers includes producing polyester polymer by melt phase polymerization and compression molding preforms of the polyester polymer without solidifying the polyester polymer prior to compression molding the preforms. This process has the advantage of eliminating the conventional intermediate steps of solidifying the polymer in the form of pellets, shipping the pellets to the preform manufacturer and then remelting the polymer. Furthermore, because the preforms are produced directly from melt phase polymer, the polymer can have a low intrinsic viscosity of 0.65 or less, which is particularly useful for blow molding containers for low pressure, low temperature applications.

    摘要翻译: 制造吹塑成形容器用预成型体的方法包括:在压缩成型前对聚酯聚合物进行熔融相聚合和压缩成形预成型体而不使聚酯聚合物固化而制造聚酯聚合物。 该方法的优点是消除了以颗粒形式固化聚合物的常规中间步骤,将颗粒运送到预制品制造商,然后重熔熔融聚合物。 此外,由于预成型体直接由熔融相聚合物生产,所以聚合物的特性粘度可以低于0.65或更低,这对于低压,低温应用的吹塑容器是特别有用的。

    Method and apparatus for compensating for in mold material shrinkage
    9.
    发明申请
    Method and apparatus for compensating for in mold material shrinkage 审中-公开
    用于补偿模具材料收缩的方法和装置

    公开(公告)号:US20060071368A1

    公开(公告)日:2006-04-06

    申请号:US10958617

    申请日:2004-10-04

    申请人: Nikhil Mani

    发明人: Nikhil Mani

    IPC分类号: B29C43/02

    摘要: A method of compression molding preforms for blow molding containers includes the steps of providing a preform mold that includes a mold cavity and a mold core, placing a mold charge of plastic resin into the mold cavity, advancing the mold core into the mold cavity to cause the mold charge resin to flow and fill a preform mold volume between the core and cavity, and then as the plastic resin cools and shrinks, advancing the mold core further into the mold cavity. Accordingly, in this method of compression molding plastic articles, the mold core is advanced into the mold cavity as the mold charge material cools and shrinks, to reduce the volume of the preform mold.

    摘要翻译: 一种用于吹塑容器的预成型件压缩成型的方法包括以下步骤:提供包括模腔和模芯的预成型模,将塑料树脂的模具装入模腔中,将模芯推入模腔中, 模具充填树脂流动并填充芯和空腔之间的预成型模具体积,然后当塑料树脂冷却和收缩时,将模具芯进一步推进到模腔中。 因此,在这种塑料制品的压塑方法中,当模具加料物质冷却和收缩时,模芯进入模腔,以减小预成型模具的体积。