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    Forming molecularly oriented containers from reheated preforms
    1.
    发明授权
    Forming molecularly oriented containers from reheated preforms 失效
    从再加热的预成型件形成分子取向的容器

    公开(公告)号：US4199629A

    公开(公告)日：1980-04-22

    申请号：US930970

    申请日：1978-08-04

    申请人： Purushottam D. Agrawal ,  John E. Griesing

    发明人： Purushottam D. Agrawal ,  John E. Griesing

    IPC分类号： B29C49/06 ,  B29C49/12 ,  B29C49/64 ,  B29C61/02 ,  B65D23/00 ,  B29C17/07 ,  B32B7/02

    CPC分类号： B29C49/12 ,  B29C49/6445 ,  B29C2049/0089 ,  B29C49/06 ,  B29C49/4289 ,  B29C61/02 ,  B29K2033/18 ,  B29K2105/258 ,  B29K2633/18 ,  Y10S428/91 ,  Y10T428/1331 ,  Y10T428/1397 ,  Y10T428/24479

    摘要： In forming containers from injection molded preforms of thermoplastic material such as nitrile-based polymers by a process which includes heating the preforms to orientation temperature followed by distension to container form in a mold, the improvement providing reduced thickness variability in lower portions of the containers which involves controlling preform shrinkage during such heating to between about 4 to 15% of the initial length for nitrile materials by maintaining the ratio of average thickness to inside preform surface area within defined limits and then axially and radially stretching such preforms during distension to predetermined levels. Nitrile preforms convertible to such improved quality containers have values of between about 0.005 to 0.011 inch.sup.-1 for the aforementioned ratio.

    摘要翻译： 在通过包括将预成型件加热到定型温度并随之扩大到模具中的容器形式的方法的方法中，通过诸如腈基聚合物的注塑成型的热塑性材料预成型体形成容器，该改进提供了容器下部的厚度变化 涉及通过将平均厚度与内部预制件表面积之比保持在限定的范围内，然后在扩张期间轴向和径向拉伸这种预制件至预定水平，从而将这种加热期间的预成型件收缩率控制在腈材料初始长度的约4至15％之间。 对于上述比例，可转换成这种改进质量容器的腈预成型件的值为约0.005至0.011英寸-1。

    Forming molecularly oriented containers from reheated preforms
    3.
    发明授权
    Forming molecularly oriented containers from reheated preforms 失效
    从再加热的预成型件形成分子取向的容器

    公开(公告)号：US4131666A

    公开(公告)日：1978-12-26

    申请号：US844652

    申请日：1977-10-25

    申请人： Purushottam D. Agrawal ,  John E. Griesing

    发明人： Purushottam D. Agrawal ,  John E. Griesing

    IPC分类号： B29C65/00 ,  B29B11/08 ,  B29C49/00 ,  B29C49/06 ,  B29C49/12 ,  B29C49/28 ,  B29C49/64 ,  B29C49/68 ,  B29C61/02 ,  B29C17/07

    CPC分类号： B29C49/12 ,  B29C49/6445 ,  B29C2049/0089 ,  B29C49/06 ,  B29C49/4289 ,  B29C61/02 ,  B29K2033/18 ,  B29K2105/258 ,  B29K2633/18

    摘要： In forming containers from injection molded preforms of thermoplastic material such as nitrile-based polymers by a process which includes heating the preforms to orientation temperature followed by distension to container form in a mold, the improvement providing reduced thickness variability in lower portions of the containers which involves controlling preform shrinkage during such heating to between about 4 to 15% of the initial length for nitrile materials by maintaining the ratio of average thickness to inside preform surface area within defined limits and then axially and radially stretching such preforms during distension to predetermined levels. Nitrile preforms convertible to such improved quality containers have values of between about 0.005 to 0.011 inch.sup.-1 for the aforementioned ratio.

    摘要翻译： 在通过包括将预成型件加热到定型温度并随之扩大到模具中的容器形式的方法的方法中，通过诸如腈基聚合物的注塑成型的热塑性材料预成型体形成容器，该改进提供了容器下部的厚度变化 涉及通过将平均厚度与内部预制件表面积之比保持在限定的范围内，然后在扩张期间轴向和径向地拉伸这种预制件至预定水平，从而将这种加热期间的预制件收缩率控制在腈材料初始长度的约4至15％之间。 对于上述比例，可转换成这种改进质量容器的腈预成型件的值为约0.005至0.011英寸-1。