Patent ID: 9469923
Filing Date: 2016-10-18
CPC Classification: D01D,D01F,D02G,D02J,D06M

Claim Text:
1. A method of producing synthetic textile yarn having copper properties, the method consisting of: a) forming a synthetic fiber by one or more of a spinning process and an extruding process; b) solidifying the synthetic fiber by a quenching process to form a single partially oriented yarn (POY), the single POY being an undrawn yarn with disoriented polymers; c) topically coating the surface of the single POY with a solution having a copper additive that does not undergo oxidative degradation during storage; and d) performing one or more finishing processes selected from a post-extrusion texturing process and/or a post-extrusion spinning/twisting process, wherein the post-extrusion texturing process and/or the post-extrusion spinning/twisting process occurs after the one or more of the spinning process and the extruding process used to form the synthetic fiber, the post-extrusion texturing process, optionally performed during false twisting, being performed by: (i) heating the single POY during one or more heating cycles of the one or more finishing processes with oven temperatures ranging from approximately 160 degrees Celsius to approximately 600 degrees Celsius; and (ii) following heating, cooling the single POY during one or more cooling cycles of the one or more finishing processes to a temperature that ranges from approximately 70 degrees Celsius to approximately 150 degrees Celsius to temperature bond the copper additive to the surface of the textile fibers of the single POY and produce a copper enhanced single POY having copper bonded to the surface of the textile fibers of the copper enhanced single POY and having an antistatic property; and the post-extrusion spinning/twisting process being performed by: (iii) heating the single POY during one or more heating cycles of the one or more finishing processes with oven temperatures ranging from approximately 160 degrees Celsius to approximately 600 degrees Celsius; and (iv) following heating, cooling the single POY during one or more cooling cycles of the one or more finishing processes to a temperature that ranges from approximately 70 degrees Celsius to approximately 150 degrees Celsius to temperature bond the copper additive to the surface of the textile fibers of the single POY and produce the copper enhanced single POY having copper bonded to the surface of the textile fibers of the copper enhanced single POY and having an antistatic property; the topically coating occurring after the quenching process and prior to and/or simultaneously with the one or more finishing processes; optionally drawing the copper coated singly POY having copper properties and disoriented polymer fibers to produce a copper enhanced single POY having copper properties and oriented polymer fibers; and optionally coating the surface of the single POY with a second topical solution that is a yarn lubricant with a copper containing finishing oil during the post-extrusion texturing process and/or the post-extrusion spinning/twisting process.