Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/162
Title: | Method and apparatus for manufacturing a singles ring yarn | Authors: | Tao, X Xu, B Wong, SKE |
Issue Date: | 29-Aug-2006 | Source: | US Patent 7,096,655 B2. Washington, DC: US Patent and Trademark Office, 2006. | Abstract: | In a process for manufacturing a singles ring yarn, firstly a first twist is supplied to a strand of traveling drafted fibers at a false twist device for producing a preliminary singles yarn. The false twist device rotates at a first speed for twisting the fibers. Immediately after the first twisting step, a joint twist of a second twist in the same direction as the first twist and a third twist in a reversed direction is supplied to the preliminary yarn for producing a final singles ring yarn. The second twist is produced by a rotatable take-up package onto which the final singles yarn is drawn. The reversed twist results in correspondence to the first twist, and the take-up package rotates at a second speed. The final singles yarn is then drawn onto the take-up package. Furthermore, a ratio of the first speed to the second speed is controlled for controlling the amount of a residual torque in the final singles ring yarn. | Keywords: | Singles ring yarn | Rights: | Assignee: The Hong Kong Polytechnic University. |
Appears in Collections: | Patent |
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us7096655b2.pdf | 872.46 kB | Adobe PDF | View/Open |
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