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    • 38. 发明公开
    • 중합체의 수중 펠릿화를 위한 장치 및 방법
    • 聚合物水下萃取装置及其工艺
    • KR1020060054357A
    • 2006-05-22
    • KR1020067001828
    • 2004-07-28
    • 이 아이 듀폰 디 네모아 앤드 캄파니
    • 잭슨,리차드,앨런로이어,데니스,잭와고너,마리온,글렌
    • B29B9/06B01J2/20B29C31/00B29B9/02
    • B29B9/065B01J2/20B29C31/00B29C47/00B29C47/0011B29C47/30B29K2995/0013
    • Underwater melt pelletizer dies which have a highly thermally conductive pathway from their heating source to the vicinity of the polymer exit end of their die holes and have a thermally insulating material at that end of their die holes have improved operability and can pelletize thermoplastics which are otherwise difficult or impossible to pelletize with such an apparatus. The main construction members of such a die are a relatively high strength but relatively low thermal conductivity plate (21), a second plate having a relatively low strength but relatively high thermal conductivity (22), a coller (23) (which is usually of relatively high strength but need not have a high thermal conductivity) to help hold the assembly together, and relatively strong mounting hole liners (24). These parts of the die may be joined by "temporary" mechanical means such as bolts (not shown), but are preferably permanently joined together by welding and/or brazing, shown by regions (25) and (26). For example, (21) and (23) may be steel or stainless steel, and may be joined by welding. Then (22), which may be copper or a copper or aluminium alloy, may be brazed to both (21) and (23).
    • 具有从其加热源到其模孔的聚合物出口端附近的高导热通道的水下熔融造粒机模具,并且在其模孔的端部具有隔热材料,具有改进的可操作性,并且可以对另外的热塑性塑料进行造粒 难以或不可能用这种装置造粒。 这种模具的主要构造构件是相对高的强度但是相对较低的热导率板(21),具有相对低的强度但是相对高的导热性(22)的第二板,一个辊筒(23)(其通常为 相对较高的强度,但不需要具有高导热性)来帮助将组件固定在一起,以及相对较强的安装孔衬垫(24)。 模具的这些部分可以通过诸如螺栓(未示出)的“临时”机械装置连接,但是优选地通过焊接和/或钎焊永久地连接在一起,如区域(25)和(26)所示。 例如,(21)和(23)可以是钢或不锈钢,并且可以通过焊接接合。 那么可以是铜或铜或铝合金的(22)可以钎焊到(21)和(23)。