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    • 3. 发明授权
    • Underwater pelletizer die system for forming multisize thermoplastic
pellets
    • 用于形成多尺寸热塑性颗粒的水下造粒机模具系统
    • US5597586A
    • 1997-01-28
    • US496300
    • 1995-06-28
    • Phillip S. WilsonMarie J. Hersman
    • Phillip S. WilsonMarie J. Hersman
    • B29B9/06B29C47/30B29C47/12B29B9/00
    • B29C47/30B29B9/065B29C47/0011
    • An underwater thermoplastic pelletizer has an extruding die, and a cutter for cutting a thermoplastic polymer extruded from the die into pellets as the molten polymer is solidified under water that is circulated to cool the extruded polymer and convey the pellets away for collection. The extruding die includes a die plate that is mounted in the face of the die concentric with and opposite the cutter and has a plurality of groups of extruding die holes that are connected in the die to a central main feed passage by separate radially extending distribution feed passages. The die holes in the groups are arranged in circular patterns of uniform radius about a center line intersecting with a circle concentric with the cutter path and the groups are equally angularly spaced about the cutter center line. The die holes in each group may have a uniform size different from that in one or more of the other groups or the die holes in each group may be different in size wherein the groups of holes are all alike with multisize holes.
    • 水下热塑性造粒机具有挤出模具和用于将熔融聚合物在水循环以固化以冷却挤出的聚合物并将颗粒输送以进行收集的情况下将从模头挤出的热塑性聚合物切割成颗粒的切割器。 挤出模具包括模具板,该模具板安装在与模具同心并与切割器相对的模具的表面上,并具有多组挤出模孔,其通过分开的径向延伸的分配进料在模具中连接到中央主进料通道 段落。 组中的模孔以围绕与切割器路径同心的圆相交的中心线以均匀半径的圆形图案布置,并且组相对于切割器中心线具有相等的角度间隔。 每组中的模孔可以具有与一个或多个其它组中的模孔不同的均匀尺寸,或者每个组中的模孔可以具有不同的尺寸,其中孔组都具有多尺寸孔。