| 摘要 |
PURPOSE:After the yarn is threaded around the yarn-transferring rollers and the yarn-collecting unit at a speed lower than the prescribed value, the speed is restored up to the prescribed value to reduce the material loss and facilitate the yarn-threading operations. CONSTITUTION:A yarn-forming material is extruded out of the yarn extruding element such as a gear pump 1 into a yarn, and the yarn is threaded around the yarn-transferring rollers 2, 3 such as godet rollers and the yarn-collecting unit such as a winder. At this time, the extrusion speed at the yarn-extruding unit 1 is made lower than the regular operation speed before threading, then the speed is restored up to the prescribed value after completion of threading.
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