发明授权
US06824717B2 Method for melt spinning filament yarns 失效
熔纺丝长丝纱的方法

  • 专利标题: Method for melt spinning filament yarns
  • 专利标题(中): 熔纺丝长丝纱的方法
  • 申请号: US10092110
    申请日: 2002-03-06
  • 公开(公告)号: US06824717B2
    公开(公告)日: 2004-11-30
  • 发明人: Klaus Schäfer
  • 申请人: Klaus Schäfer
  • 优先权: DE19942518 19990907
  • 主分类号: D01D5092
  • IPC分类号: D01D5092
Method for melt spinning filament yarns
摘要:
A method of melt spinning a group of multifilament yarns (1) from a polymer melt, wherein each group of yarns (10) is formed from a plurality of filaments (4) that are extruded through a nozzle bore (3) and withdrawn by a withdrawal means by the action of a withdrawal tension. In accordance with the invention, each group of yarns (10) is cooled in a precooling zone (5) and in an aftercooling zone (6) downstream thereof. The cooling in the precooling zone (5) and in the aftercooling zone (6) is adjusted such that the group of yarns (10) is cooled within the aftercooling zone (6) by the action of a coolant flow directed into the path of the yarn, so that the filaments (4) of the group of yarns (10) solidify in a solidification range within the aftercooling zone (6).
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