| 摘要 |
<p>PURPOSE: To economically obtain a high-quality spun yarn by condensing a roving between a multi-stage drafting mechanism outlet and a twist inhibiting nip and inserting a fiber strand to a ring spinning device while twisting. CONSTITUTION: In a ring spinning, a roving 11 fed from a roving frame bobbin 12 is sent through feed rollers 37 and 37' to a pre-draft zone 23 and drafted in a range of from 1.1 to 1.3 fold. The roving is provided in a main draft zone 24 with a total draft of 60-150 fold, especially between yarn number Ne 30-60, 60-120 fold, preferably 65-120, between yarn number Ne 60-100, 80-120 fold, condensed at an interval of a fixed distance 15 from a nip 14 between a suction roller 25 to form a feed roller and an opposing feed roller 26 to a nip between the suction roller 25 an opposing twist inhibiting roller 27 into a fiber strand 22 of not more than 1.5 millimeters in width. The fiber strand after released from the nip 16 is fed to a ring spinning frame 17 while being twisted to give the objective spun yarn.</p> |
