Apparatus and method for reducing die accumulation
    12.
    发明授权
    Apparatus and method for reducing die accumulation 失效
    减少模具积聚的装置和方法

    公开(公告)号:US06358449B1

    公开(公告)日:2002-03-19

    申请号:US09444879

    申请日:1999-11-22

    IPC分类号: B29C4714

    摘要: A polymeric film extrusion die having a die body with a molten polymer inlet, a molten polymer exit, and forming a molten polymer conduit providing a fluid communication between the molten polymer inlet and the molten polymer exit. The die body includes a peripheral edge at a periphery of the molten polymer exit, which peripheral edge has a thickness less than or equal to about 0.005 inches. The apparatus further includes a molten polymer exit heated gaseous fluid supply adapted to provide heated gaseous fluid proximate the molten polymer exit so as to maintain the die temperature at the molten polymer exit as low as possible without affecting the processability/integrity of the product film.

    摘要翻译: 一种具有熔融聚合物入口的模体和熔融聚合物出口以及形成熔融聚合物导管的聚合物膜挤出模具,其在熔融聚合物入口和熔融聚合物出口之间提供流体连通。 模具主体包括在熔融聚合物出口的周边处的周边边缘,该周边边缘具有小于或等于约0.005英寸的厚度。 该装置还包括熔融聚合物出口加热的气体流体供应源,其适于在熔融聚合物出口附近提供加热的气态流体,以便将熔融聚合物出口处的模具温度保持在尽可能低的水平,而不影响产品膜的加工性/完整性。