Patent ID: 8658244
Filing Date: 2014-02-25
Classification: D02G,D06P,D07B,D10B,Y10T

Abstract:
1. A method of making a colored color-fast multifilament ultrahigh molecular weight polyolefin yarn, the method comprising the steps of: feeding at least one substantially untwisted multifilament ultrahigh molecular weight polyolefin yarn, each yarn being aligned in a substantially uniaxial direction; coating the individual filaments of said substantially untwisted, substantially uniaxial aligned multifilament yarn with a coating composition comprising colorant in a thermoplastic resin carrier, wherein said coating composition comprises a solvent; said thermoplastic resin having a lower melting point than the filaments of said multifilament yarn, with said coating composition being adhered to the filaments of said multifilament yarn; and heating the multifilament yarn while stretching the yarn without fusing of the filaments of the multifilament yarn; whereby a colored color-fast multifilament yarn that retains its multifilament characteristics is formed, wherein adjacent filaments are not fused together either partially or fully, and having individual filaments colored by said colorant with the color becoming an integral part of said filaments of said multifilament yarn.