Patent ID: 6413452
Filing Date: 2002-07-02
Classification: B29C,D02G,Y10T

Abstract:
A method to make a yarn comprising the steps of:(a) extruding polymer to produce filaments; (b) converging said filaments into a yarn; (c) introducing entanglements into said filaments; (d) using an on-line device to monitor defects in all said yarn produced; and (e) segregating said yarn which has a sufficient yarn quality for sizeless weaving wherein said yarn has the following properties: the yarn length per defect is greater than or equal to about 3000 meters per defect; the maximum skip length is less than or equal to about 120 millimeters; the ratio between said yarn length per defect to said maximum skip length is greater than or equal to about 50; the entanglements per meter times the average entanglement strength is greater than or equal to about 120; and can be woven sizeless.