Abstract
This study evaluates the unevenness (CV%) of the stretch-broken tow in the break draft zone of a two drafting-three pairs of rollers with double apron draft system using oxidized filament tow. A new method is presented for determining a suitable break draft condition in tow-to-yarn direct spinning to obtain the best oxidized yarn quality using the technique of stretch-broken tow unevenness. We adopt a two drafting-three pairs of rollers with double apron draft system replaces the traditional one drafting-two pairs of rollers draft system to precede the 37 tex oxidized direct yarn spinning. The fundamental relationships between break drafting conditions (such as draft ratio and roller gauge) and CV% of stretch-broken tow are on the same trend of the drafting force. The results revealed, based on the correlation of stretch-broken tow unevenness and yarn quality, the draft condition corresponding to the lower CV% can be chosen as the suitable break draft in tow-to-yarn direct spinning to obtain the best oxidized direct yarn quality. In fact, the work had successfully improved the direct yarn quality.
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Su, CI., Lai, PT. Evaluating the unevenness of stretch-broken tow in tow-to-yarn direct spinning. Fibers Polym 11, 648–653 (2010). https://doi.org/10.1007/s12221-010-0648-z
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DOI: https://doi.org/10.1007/s12221-010-0648-z