Invention Grant
US08544252B2 Method and apparatus for reducing residual torque and neps in singles ring yarns 有权
用于减少单纱环纱中剩余扭矩和棉结的方法和装置

Method and apparatus for reducing residual torque and neps in singles ring yarns
Abstract:
Method and apparatus for reducing residual torque in singles ring yarns, achieved by imparting two separate false twisting points on the traveling strand of fibers (or yarn) after the strand exits from the spinning triangle with a proper ratio between the belt speed and the strand feeding speed. In addition to reducing the residual torque, this double false twist technique also reduces yarn hairiness to the same level as achieved by more expensive compact spinning devices, reduces yarn twist by more than 20% and significantly enhances yarn and fabric softness. Furthermore, by combining the double false twist technique with a compact spinning device, the numbers of neps, thick and thin places are significantly reduced to produce high-quality yarns and fine-count yarns.
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