Patent ID: 7096655
Filing Date: 2006-08-29
Classification: D01H

Abstract:
1. A process for manufacturing a singles ring yarn, comprising: supplying a first twist to a strand of traveling drafted fibers at a false twist device for producing a preliminary singles yarn, wherein the false twist device rotates at a first speed for twisting the fibers; immediately after the first twisting step, supplying to the preliminary singles yarn a joint twist of a second twist in the same direction as the first twist and a third twist in a reversed direction for producing a final singles ring yarn, wherein the second twist is produced by a rotatable take-up package into which the final singles yarn is drawn, wherein the reversed twist results in correspondence to the first twist, and wherein the take-up package rotates at a second speed; drawing the final singles yarn into the take-up package; and controlling a ratio of the first speed to the second speed for controlling the amount of a residual torque in the final singles ring yarn.