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    • 6. 发明申请
    • CO-EXTRUSION DIE, METHOD OF EXTRUDING WITH THE DIE, AND EXTRUDED ARTICLES MADE THEREFROM
    • 辅助挤出机,挤出方法和挤出方法
    • WO2010078065A1
    • 2010-07-08
    • PCT/US2009/068617
    • 2009-12-18
    • 3M INNOVATIVE PROPERTIES COMPANYAUSEN, Ronald W.JONZA, James M.BATCH, Gibson L.GRAHAM, Paul D.
    • AUSEN, Ronald W.JONZA, James M.BATCH, Gibson L.GRAHAM, Paul D.
    • B29C47/14B29C47/04B29C47/06
    • B29C47/0021B29C47/062B29C47/065B29C47/14B29C47/145Y10T428/18
    • A die (20) comprising two die cavities (38,40), with each supplying one polymeric material, a septum (26) separating the two die cavities (38,40), and a die opening (44) through which an extrudate is extruded. The septum (26) has a dispensing edge (36) and a plurality of extrusion channels. First extrusion channels connect one die cavity (38) and second extrusion channels connect the other die cavity (40) to the dispensing edge (36). The first and second extrusion channels are disposed in alternating positions along the dispensing edge such that one first channel is disposed between any two adjacent second channels. A method of extruding with such a die (20) and an extruded article made therefrom. The extruded article comprises a plurality of longitudinal first zones composed of a first polymeric material alternating with a plurality of longitudinal second zones composed of a second polymeric material such that one first zone is disposed between any two adjacent second zones. The zones are generally parallel to one another.
    • 一种模具(20),包括两个模腔(38,40),每个提供一个聚合物材料,分隔两个模腔(38,40)的隔膜(26)和模具开口(44),挤出物 挤出。 隔膜(26)具有分配边缘(36)和多个挤压通道。 第一挤压通道连接一个模腔(38),第二挤出通道将另一个模腔(40)连接到分配边缘(36)。 第一和第二挤压通道沿着分配边缘设置在交替位置,使得一个第一通道设置在任何两个相邻的第二通道之间。 用这种模具(20)和由其制成的挤出制品进行挤出的方法。 挤压制品包括由第一聚合物材料组成的多个纵向第一区域,所述第一聚合物材料与由第二聚合物材料组成的多个纵向第二区域交替,使得一个第一区域设置在任何两个相邻的第二区域之间。 这些区域通常彼此平行。