| 摘要 |
PURPOSE:To lessen unevenness of yarn occurring in yarn, by setting a feed port and a suction port of heating fluid at a yarn inlet and a yarn outlet at both the ends of a heating column surrounded by insulating jacket, respectively. CONSTITUTION:At both the ends of the heating column 1 surrounded by the insulating jacket 3, the yarn inlet 7 and the yarn outlet 8 having a cross-section more tightened than a cross-section of the heat-treating zone 2 are set. The feeding port 9 of heating fluid is laid at the yarn inlet, and the suction port 12 of heating fluid at the yarn outlet. The heating medium blown from the feeding port 9 is made to flow in the traveling direction of the yarn Y, and it is forcibly sucked from the suction port 12, to prevent shaking of the yarn.
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