Non-pilling insulating flame-resistant fabrics

Abstract

Insulating flame-resistant woven fabrics have been discovered which have a non-pilling pile on the back side of the fabric to provide an insulating layer of stagnant air and have long wear life.

1 . An insulating durable flame-resistant fabric comprising: 3×1 and 4×1 construction; at least 1% phosphorus; a non-pilling pile on a fill-face side; warp yarns; fill yarns; said warp yarns containing 15 to 30% nylon fibers and 70 to 85% cotton fibers; said fill yarns being 100% cotton; said fill yarns having a fill yarn tear strength of no less than 3 lbs.  
     
     
         2 . The insulating fabric defined in  claim 1  having a fill tear strength of no less than 5 lbs.  
     
     
         3 . The insulating fabric defined in  claim 1  in which the nylon fibers are T-420 fibers from Dupont.  
     
     
         4 . The insulating fabric defined in  claim 1  which contains at least 2% of 
 phosphorus by weight of fabric as part of a ammonia cured flame-retardant.  
 
     
     
         5 . The insulating fabric defined in  claim 1  which contains at least 1% of 
 phosphorus by weight of fabric as part of a heat cured flame-retardant.  
 
     
     
         6 . The insulating fabric defined in  claim 1  which includes twill construction  
     
     
         7 . The insulating fabric defined in  claim 1  which includes sateen construction.