| 摘要 |
PURPOSE:To improve cooling effect while keeping a reduced pressure state, by setting a cooling air sending part at just below a spinneret in a spinning column in a reduced pressure atmosphere, withdrawing cooled yarn from an outlet part of the fluidly sealed spinning column by a withdrawing means laid at the outside of the spinning column. CONSTITUTION:The movable column 17 is brought into contact with the ring- shaped chimney 12 by pressure, and the space Sa extending from a position just below the spinneret 7 to the seal guide 24 at the bottom of the fixed cylinder 18 is prepared. Degree of reduced pressure of the space Sa is detected by the vacuum meter 27, and the vacuum pump 26 is regulated by the controller 22 to make the degree of reduced pressure constant. The yarn Y is cooled and solidified by cooling air sent from the chimney.
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