| 摘要 |
<p>A friction spinning apparatus and process use at least one perforated roller (2) enclosing a suction sleeve (4) having the static pressure applied along its suction slot (5, 6, 7) changing between a tip end of the fibre bundle forming the yarn and a downstream location of the fibre bundle whereby the tip end is subjected to a weaker suction effect holding it against the surface (2) than is the stronger downstream part of the fibre bundle.</p> |
