Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6300
Title: Method and apparatus for reducing residual torque and neps in singles ring yarns
Authors: Tao, X 
Hua, T
Xu, B 
Feng, J
Issue Date: 1-Oct-2013
Source: US Patent 8,544,252 B2. Washington, DC: US Patent and Trademark Office, 2013. How to cite?
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.
URI: http://hdl.handle.net/10397/6300
Rights: Assignee: The Hong Kong Polytechnic University.
Appears in Collections:Patent

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