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    • 8. 发明授权
    • Modular tubular extrusion head and a process for extruding tubular
articles
    • 模块化管状挤出头和挤压管状制品的方法
    • US5393216A
    • 1995-02-28
    • US797021
    • 1991-11-25
    • Erich O. TeutschDennis J. Coyle
    • Erich O. TeutschDennis J. Coyle
    • B29C47/20B29C47/06B29C47/12
    • B29C47/705B29C47/0023B29C47/20B29C47/263
    • A polymer resin extrusion head includes one or more annular extrusion modules in which a spiral channel having one or more convolutions extends from a resin inlet on the periphery of the module to an annular extrusion outlet. Preferably, the channel gradually opens into an annular frustoconical space leading to the extreusion outlet at the inner edge of the module. The spiral channel extends symmetrically around the extrusion module or modules in a manner so as to subject all of the extruded polymer flowing from the inlet to the extrusion outlet to substantially the same process conditions along the flow path. As a result, the polymer is distributed at the outlet with properties which are substantially symmetrical around the axis of the extrusion module or modules for all resin distributed to the outlet. It is preferable that the extrusion module or modules include a pair of mating annular members with central frustoconical portions having apexes with an axial dimension greater than the axial dimension of the outer portions of the modules so as to form air spaces around each module including frustoconical air space portions to avoid direct heat transfer between adjacent modules.
    • 聚合物树脂挤出头包括一个或多个环形挤出模块,其中具有一个或多个卷取的螺旋通道从模块的周边上的树脂入口延伸到环形挤出出口。 优选地,通道逐渐地通向环形截头圆锥形空间,导致在模块的内边缘处的出口。 螺旋通道围绕挤出模块或模块以对称的方式延伸,以便使得所有挤出的聚合物从入口流到挤出出口,从而沿流动路径基本相同的工艺条件。 结果,聚合物在出口处分布,其性质基本上围绕挤出模块的轴线对称或者用于所有分散到出口的树脂的模块。 优选地,挤出模块或模块包括具有中心截头圆锥形部分的一对配合环形构件,其具有轴向尺寸大于模块的外部部分的轴向尺寸的顶点,以便在每个模块周围形成包括截头圆锥形空气的空气空间 空间部分,以避免相邻模块之间的直接传热。
    • 10. 发明授权
    • Process for forming plastic articles
    • 塑料制品成型工艺
    • US5779959A
    • 1998-07-14
    • US676997
    • 1996-07-08
    • Erich O. TeutschDennis J. Coyle
    • Erich O. TeutschDennis J. Coyle
    • B29C47/06B29C47/28B29C49/22
    • B29C47/0023B29C47/065B29C47/263B29C47/28B29C47/705B29C47/0016B29C47/0019B29C47/0021B29C47/0026
    • A polymer resin extrusion head includes one or more annular extrusion modules in which a spiral channel means having one or more convolutions extends from a resin inlet on the periphery of the module to an annular extrusion outlet. Preferably, the channel means gradually opens into an annular frustoconical space leading to the extreusion outlet at the inner edge of the module. The spiral channel extends symmetrically around the extrusion module or modules in a manner so as to subject all of the extruded polymer flowing from the inlet to the extrusion outlet to substantially the same process conditions along the flow path. As a result, the polymer is distributed at the outlet with properties which are substantially symmetrical around the axis of the extrusion module or modules for all resin distributed to the outlet. It is preferable that the extrusion module or modules comprise a pair of mating annular members with central frustoconical portions having apexes with an axial dimension greater than the axial dimension of the outer portions of the modules so as to form air spaces around each module including frustoconical air space portions to avoid direct heat transfer between adjacent modules.
    • 聚合物树脂挤出头包括一个或多个环形挤出模块,其中具有一个或多个卷取的螺旋通道装置从模块的周边上的树脂入口延伸到环形挤出出口。 优选地,通道装置逐渐地通向环形截头圆锥形空间,通向模块内边缘处的出口。 螺旋通道围绕挤出模块或模块以对称的方式延伸,以便使得所有挤出的聚合物从入口流到挤出出口,从而沿流动路径基本相同的工艺条件。 结果,聚合物在出口处分布,其性质基本上围绕挤出模块的轴线对称或者用于所有分散到出口的树脂的模块。 优选地,挤出模块或模块包括具有中心截头圆锥形部分的一对配合环形构件,其具有轴向尺寸大于模块的外部部分的轴向尺寸的顶点,以便在每个模块周围形成包括截头圆锥形空气的空气空间 空间部分,以避免相邻模块之间的直接传热。