Method and Apparatus for Manufacturing a Singles Ring Yarn
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.
Patent Number: US7096655B2
Application Number: US2004858400A
Inventor: Tao, Xiaoming | Xu, Bingang | Wong, Sing Kee
Priority Date: 2 Jun 2004
Priority Number: US7096655B2
Application Date: 2 Jun 2004
Publication Date: 29 Aug 2006
IPC Current: D01H000752 | D01H000790 | D01H000792 | D01H001308
US Class: 057075 | 057332
Assignee Applicant: The Hong Kong Polytechnic University
Title: Method and apparatus for manufacturing a singles ring yarn
Usefulness: Method and apparatus for manufacturing a singles ring yarn
Novelty: Manufacture of singles ring yarn in textile industry, by controlling ratio of first rotation speed to second rotation speed of take-up package
Electronics
Semiconductor
TAO Xiao-ming
XU Bingang
WONG Sing-kee
USA
