| 摘要 |
PURPOSE:To increase twisting efficiency to enable the increase in the spinning speed, and obtain bundling spun yarns of high quality, by making the distance between the air-jetting nozzle and the drafting device smaller than the effective fiber length. CONSTITUTION:A fiber bundle drafted in the drafting device is introduced into 2 air-jetting nozzles 11, 12 in order, whose twisting directions are different from each other to form a bundle-spun yarn where the distance D between the nipping point N on the front roller 5 in the drafting device and the rear air-jetting nozzle 12 is made smaller than the effective fiber length of the fiber bundle fed. |
