Breathable nonwoven liquid barrier fabric and method

Details Breathable nonwoven liquid barrier fabric and method Breathable nonwoven liquid barrier fabric and method

D - Textiles, Paper

06

N

D06N 3/00 (2006.01) D04H 1/58 (2006.01) D04H 1/64 (2006.01) D04H 3/12 (2006.01)

Patent

CA 2236402

A porous, nonwoven fabric made from bonded fibers and/or filaments is provided, and a continuous film or layer of a liquid radiation curable resin is applied to the fabric surface. The liquid film is subjected to radiation to cure the liquid into a solid film bonded to the surface of the fabric. The film renders the fabric impervious to liquids but allows passage of liquid vapor, and the technique provides an alternative to more expensive ways to achieve the same barrier properties.

L'invention porte sur un non-tissé poreux, fait de fibres et (ou) de filaments liés, ainsi que sur une pellicule ou une couche continues d'une résine liquide photoréticulable, appliquées à la surface du tissu. La pellicule liquide est soumise à une photoréticulation pour durcir le liquide en une couche solide fixée à la surface du tissu. La couche rend le tissu imperméable aux liquides, tout en laissant passer la vapeur des liquides; la technique permet de remplacer avantageusement des méthodes plus coûteuses pour obtenir des propriétés de barrière tout aussi efficaces.

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