Textile Laminate For Thermal Insulation

Abstract

The textile laminate for providing thermal insulation is remarkable in that at least one of the walls (P 1 ), and in particular the wall that is to be subjected first to heat, is suitable for shrinking under the effect of heat so as to cause link yarns (F) to stand up, thereby leading to an increase in the spacing between said walls (P 1 and P 2 ) that are made in full or in part to be thermostable.

1 . A textile laminate for thermal insulation, in particular for making protective garments, the laminate presenting a woven or knitted structure having at least two walls linked together in spaced-apart manner by a plurality of link yarns which tend naturally to lie down, such that when in this position, the spacing between the walls is small and less than the length of the link yarns, wherein at least one of the walls, and in particular the wall that is to be the first that is subjected to heat, is suitable for shrinking under the effect of the heat so as to cause the link yarns to stand up, thereby increasing the spacing between said walls, which walls are made in full or in part to be thermostable.  
   
   
       2 . A textile laminate according to  claim 1 , wherein the link yarns are woven or knitted in part with each of the layers or walls.  
   
   
       3 . A textile laminate according to  claim 1 , wherein the link yarns are based on para-aramid.  
   
   
       4 . A textile laminate according to  claim 1 , wherein each wall is the result of interlacing warp yarns and weft yarns, the link yarns being disposed in the warp direction, said yarns lying down in the weft direction.  
   
   
       5 . A textile laminate according to  claim 1 , wherein the warp yarns and the weft yarns of each of the walls are selected from those constituting meta-aramid family, on their own or in a mixture.  
   
   
       6 . A textile laminate according to  claim 1 , wherein each wall presents the same yarn density.  
   
   
       7 . A textile laminate according to  claim 1 , wherein the two walls present different yarn densities.  
   
   
       8 . A textile laminate according to  claim 1 , the laminate being combined with an outer sheet of fireproofed material and a waterproof and breathing membrane with a substrate.  
   
   
       9 . The use of a laminate according to  claim 1  for making a protective garment, in particular for a firefighter.