Method and apparatus for manufacturing a singles ring yarn

Details Method and apparatus for manufacturing a singles ring yarn Method and apparatus for manufacturing a singles ring yarn

2006-08-29

2006-08-29

Hurley, Shaun R (Department: 3765)

Textiles: spinning, twisting, and twining

Apparatus and processes

Receiving twist type

C057S332000

Reexamination Certificate

active

07096655

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.

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