| 摘要 |
PURPOSE: An ultra low tension relax process and corresponding apparatus are provided, wherein a tension gate is incorporated into a relax zone in a yarn production process. CONSTITUTION: The tension gate can be anything that produces a drag on the yarn threadline such as an air drag device, a liquid drag device, or a solid surface contact drag device, or a combination of these. A tension gate is a device which has an outlet yarn tension greater than the inlet yarn tension when used in a relax zone, thus creating a tension differential. The tension gate provides a tension differential of at least 5mg per denier. A relax zone is typically found in a spin-drawing process, a draw-twisting process, a draw-winding process, or a draw-bulking process.
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