US2018274136A1PendingUtilityA1

Flame Resistant Fabric

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Assignee: INVISTA NORTH AMERICA SARLPriority: Jan 12, 2015Filed: Jan 8, 2016Published: Sep 27, 2018
Est. expiryJan 12, 2035(~8.4 yrs left)· nominal 20-yr term from priority
Inventors:Chuanpu GuoTodd C. BarnesDavid Anthony Green, Jr.
D10B 2331/021D10B 2201/02D10B 2321/101D10B 2201/24D10B 2331/02D10B 2321/10D03D 15/0027D03D 15/12D03D 1/0035D03D 15/513D03D 1/00D03D 15/47
29
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Claims

Abstract

Flame resistant fabrics made from yarns of cellulose fiber, polyamide fiber, and oxidized polymeric biregional fiber are provided. The fabrics comprise about 20 to about 90 percent by weight of cellulose fiber, about 3 to about 45 percent by weight of polyamide fiber and about 5 to about 35 percent by weight of an oxidized polymeric biregional fiber comprising an oxidized polymer selected from the group consisting of acrylonitrile-based homopolymers, acrylonitrile-based copolymers, acrylonitrile-based terpolymers, and combinations thereof.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . Fabric comprising:
 a) about 20 to about 90 percent by weight of cellulose fiber;   b) about 3 to about 45 percent by weight of polyamide fiber; and   c) about 5 to about 35 percent by weight of an oxidized polymeric biregional fiber comprising an oxidized polymer selected from the group consisting of acrylonitrile-based homopolymers, acrylonitrile-based copolymers, acrylonitrile-based terpolymers, and combinations thereof.   
     
     
         2 . The fabric of  claim 1  wherein the polyamide fiber comprises nylon 6,6. 
     
     
         3 . The fabric of  claim 1  wherein the oxidized polymeric biregional fiber comprises oxidized polyacrylonitrile fiber. 
     
     
         4 . The fabric of  claim 1  wherein the fabric has a basis weight of from about 3.0 oz/yd 2  to about 15 oz/yd 2 . 
     
     
         5 . The fabric of  claim 1  wherein the fabric has a basis weight of about 3.0 oz/yd 2  to about 6.5 oz/yd 2 . 
     
     
         6 . The fabric of  claim 1  wherein the fabric is treated with flame retardant chemistry. 
     
     
         7 . The fabric of  claim 6  wherein the fabric has an arc thermal performance value of about 8 cal/cm 2  or greater. 
     
     
         8 . The fabric of  claim 6  wherein the fabric has a ratio of arc thermal performance value to basis weight of about 1.24 or greater. 
     
     
         9 . The fabric of  claim 1 , wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise the biregional fibers. 
     
     
         10 . The fabric of  claim 1 , wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise about 50 to about 100 percent by weight of the biregional fibers in the fabric. 
     
     
         11 . The fabric of  claim 1 , wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise at least about 75 percent by weight of the biregional fibers in the fabric. 
     
     
         12 . The fabric of  claim 1 , wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise about 100 percent by weight of the biregional fibers in the fabric. 
     
     
         13 . The fabric of  claim 1  further comprising from about 1 to about 9 percent by weight of para-aramid fiber. 
     
     
         14 . The fabric of  claim 13  wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise from about 50 to about 100 percent by weight of the para-aramid and the biregional fibers. 
     
     
         15 . The fabric of  claim 13  wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise from about 100 percent by weight of the para-aramid fibers and the biregional fibers. 
     
     
         16 . The fabric of  claim 1  further comprising from about 1 to about 20 percent by weight of FR rayon fiber. 
     
     
         17 . The fabric of  claim 15  wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise from about 50 to about 100 percent by weight of the FR rayon fibers and the biregional fibers. 
     
     
         18 . The fabric of  claim 15  wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise from about 100 percent by weight of the FR rayon fibers and the biregional fibers. 
     
     
         19 . The fabric of  claim 1  further comprising from about 1 to about 9 percent by weight of para-aramid fiber and from about 1 to about 20 percent by weight of FR rayon fiber. 
     
     
         20 . The fabric of  claim 19  wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise from about 50 to about 100 percent by weight of the FR rayon fibers, the para-aramid fibers and the biregional fibers. 
     
     
         21 . The fabric of  claim 19  wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise from about 100 percent by weight of the FR rayon fibers, the para-aramid fibers and the biregional fibers. 
     
     
         22 . Fabric comprising:
 a) about 20 to about 90 percent by weight of cellulose fiber;   b) about 3 to about 45 percent by weight of polyamide fiber;   c) about 1 to about 9 percent by weight of para-aramid fiber;   d) about 1 to about 20 percent by weight of FR rayon fiber; and   e) about 5 to about 35 percent by weight of biregional fiber comprising an oxidized polymer selected from the group consisting of acrylonitrile-based homopolymers, acrylonitrile-based copolymers, acrylonitrile-based terpolymers, and combinations thereof,   wherein the fabric has a basis weight of from about 3.0 oz/yd 2  to about 15 oz/yd 2 , and wherein the fabric is woven and comprises warp yarns and filling yarns, wherein the filling yarns comprise the majority of the FR rayon, para-aramid and the biregional fibers.   
     
     
         23 . The fabric of  claim 22  wherein the polyamide fiber comprises nylon 6,6. 
     
     
         24 . The fabric of  claim 22  wherein the oxidized polymeric biregional fiber comprises oxidized polyacrylonitrile fiber. 
     
     
         25 . The fabric of  claim 22  wherein the fabric has a basis weight of about 3.0 oz/yd 2  to about 6.5 oz/yd 2 . 
     
     
         26 . The fabric of  claim 22  wherein the filling yarns comprise from about 100 percent by weight of the FR rayon fibers, the para-aramid fibers and the biregional fibers. 
     
     
         27 . The fabric of  claim 22  wherein the fabric is treated with flame retardant chemistry. 
     
     
         28 . The fabric of  claim 27  wherein the fabric has an arc thermal performance value of about 8 cal/cm 2  or greater. 
     
     
         29 . The fabric of  claim 27  wherein the fabric has a ratio of arc thermal performance value to basis weight of about 124 or greater.

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