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    • 5. 发明申请
    • METHODS OF MOLDING MULTI-LAYER POLYMERIC ARTICLES HAVING CONTROL OVER THE BREAKTHROUGH OF THE CORE LAYER
    • 成型多层聚合物的方法在核心层的突破中具有控制作用
    • WO2011112613A1
    • 2011-09-15
    • PCT/US2011/027594
    • 2011-03-08
    • KORTEC, INC.SWENSON, Paul
    • SWENSON, Paul
    • B29C45/16
    • B29C45/16B29C45/1642B29C2945/76545B29C2945/76555B29C2945/76568B29C2945/76765B29K2995/0069B29L2031/712Y10T428/1352
    • Disclosed herein are methods and systems for co-extruding multiple polymeric material flow streams into a mold cavity to produce a molded plastic article. At least one interior core stream of a first polymeric material is surrounded by inner and outer streams of at least one other polymeric material. The interior core stream serves as an interior layer of a resultant molded plastic article while the inner and outer streams serve as inner and outer layers, respectively, of the resultant plastic article. The interior core stream is selectively directed to flow into or past a downstream branch channel in a mold cavity. The downstream branch channel branches from a primary channel in the mold cavity at a branch junction. The branch channel defines a protrusion portion of the resultant molded plastic article. The leading edge of the interior core stream is selectively controlled in the branch channel to position the leading edge at or near to the terminal end of the branch channel without having the leading edge of the interior core stream breakthrough a flow-front of the inner and outer streams. The resultant molded plastic article includes an interior layer formed of the first polymeric material that extends into, through and to a distal end of the protrusion while still being encased by inner and outer layers formed from the inner and outer flow streams.
    • 本文公开了用于将多个聚合物材料流流共同挤出到模腔中以产生模制塑料制品的方法和系统。 至少一个第一聚合物材料的内部核心流被至少一种其它聚合材料的内部和外部流包围。 内部芯流作为所得模制塑料制品的内层,而内部和外部流分别用作所得塑料制品的内层和外层。 内部芯流被选择性地导向流入或流过模腔中的下游分支通道。 下游分支通道从分支结处的模腔中的主通道分支。 分支通道限定所得模制塑料制品的突出部分。 内部芯流的前缘被选择性地控制在分支通道中,以将前缘定位在分支通道的末端或接近分支通道的末端,而不会使内芯流的前缘穿过内部流的前端, 外流。 所得到的模制塑料制品包括由第一聚合物材料形成的内层,该内层延伸到突出部的顶部,并且延伸到突出部的远端,同时仍由内流和外流形成的内层和外层包围。
    • 7. 发明申请
    • OPTIMIZED FLOW TO PREVENT CORE LAYER BREAKTHROUGH
    • 优化的流程,以防止核心层破裂
    • WO2003064133A1
    • 2003-08-07
    • PCT/US2003/002867
    • 2003-01-31
    • KORTEC, INC.SABIN, DouglasSWENSON, Paul
    • SABIN, DouglasSWENSON, Paul
    • B29C45/16
    • B29C45/1646B29C45/1642
    • A method of co-extruding a plurality of plastic material flowing streams into a mold cavity produces a molded product. A flow velocity profile (120) at the end of a nozzle (100) having a throttle pin (110) is provided, including a flow velocity profile (160) near the flow front (140) in an article (130) as the flow front (140) moves at an average velocity. The interior core material (170) is injected along a streamline having a flow velocity greater than an average velocity of the combined streams, but less than the maximum velocity at the zero gradient (150), and the interior stream does not flow along or across a zero-velocity-gradient streamline of the combined streams.
    • 将多个塑性材料流入模腔共挤出的方法产生模制产品。 提供具有节流销(110)的具有节流销(110)的喷嘴(100)的端部处的流速分布(120),包括在物品(130)中的流动前沿(140)附近的流速分布(160),作为流 前部(140)以平均速度移动。 内部芯材料(170)沿流线注入,流线速度大于组合流的平均速度,但小于零梯度(150)处的最大速度,并且内部流不沿着或跨过 组合流的零速度梯度流线。