Wash durable fabric laminates

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/12 (2006.01) A41D 31/02 (2006.01) B32B 7/14 (2006.01) D06M 23/16 (2006.01) D06N 7/00 (2006.01)

Patent

CA 2227794

A delamination problem in fabric laminates made of a fabric laminated to a non- porous, hydrophilic organic polymer film, such as a breathable polyurethane film, was found to be caused by the hydrophilic nature of the polymer. A particular adhesive pattern was devised to overcome the delamination problem. More specifically, a wash-durable fabric laminate of a continuous, non-porous hydrophilic polymer, e.g., a breathable polyurethane, layer and a fabric layer were bonded together by a discontinuous, but interconnected pattern of an adhesive layer. The fabric laminate is water-vapor-permeable, air-impermeable and liquid water impermeable.

Le problème du décollage dans les laminés textiles constitués d'un textile laminé sur une pellicule de polymère organique hydrophile non poreux, par exemple une pellicule de polyuréthane, s'explique par la nature hydrophile du polymère. Un motif d'adhésif particulier permet d'empêcher ce décollage. Plus spécifiquement, est décrit un laminé textile résistant au lavage constitué d'une couche de polymère hydrophile non poreux, continu, par exemple, un polyuréthane imper-respirant et d'une couche de textile fixées ensemble par une couche adhésive composant un motif discontinu, mais assurant une interliaison. Le laminé textile est perméable à la vapeur d'eau, imperméable à l'air et imperméable à l'eau liquide.

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