Nonwoven breathable composite barrier fabric

Details Nonwoven breathable composite barrier fabric Nonwoven breathable composite barrier fabric

D - Textiles, Paper

04

H

D04H 13/00 (2006.01) B32B 5/26 (2006.01) B32B 31/00 (2000.01)

Patent

CA 2523782

A breathable barrier material having a first nonwoven layer and a first microporous film bonded together to form a composite laminate. A second microporous film and a second nonwoven layer are bonded to the composite laminate and second film to form the barrier material such that the films are disposed between the nonwoven layers. The composite laminate is bonded to the second film and second nonwoven layer thereby creating bond points in the material and void spaces between the first and second films. The void spaces between films may enhance liquid and viral barrier properties in the barrier material by creating a boundary that minimizes passage of liquids and/or viral components through the barrier material.

L'invention a trait à une matière barrière respirante, qui comporte une première couche non tissée et un premier film microporeux, qui sont liés ensemble pour que soit formé un stratifié composite. Un second film microporeux et une seconde couche non tissée sont liés au stratifié composite afin que soit formée la matière barrière, de façon que les films soit disposés entre les couches non tissées. Le stratifié composite est lié au second film et à la seconde couche non tissée, ce qui crée des points de liaison dans la matière et des espaces vides entre les premier et second films. Les espaces vides entre les films peuvent améliorer les propriétés de protection contre les liquides et les virus de la matière barrière, en créant une frontière qui réduit au minimum le passage de liquides et/ou de constituants viraux à travers la matière barrière.

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