Composite fabric material exhibiting three-dimensional...

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 5/02 (2006.01) A41B 17/00 (2006.01) A41D 31/02 (2006.01) B32B 5/04 (2006.01) B32B 7/02 (2006.01)

Patent

CA 2598980

A composite fabric material which comprises: a water-absorbing woven/knit fabric which, upon water absorption, increases in area and thickness or in area or thickness by at least 10% as compared with that in a dry state; a woven/knit fabric, nonwoven fabric, resin film, or resin coating layer which undergoes substantially no change in area and thickness upon water absorption as compared with that in a dry state; and a means of inhibiting an areal change with water absorption, the means being bonded to or fixed by stitching to at least one side of the water-absorbing woven/knit fabric so as to cover part of the surface and leave exposed regions independent of one another or to cover the whole surface, and the means inhibiting that part of the water- absorbing woven/knit fabric to which the means is bonded or fixed by stitching from changing in area upon water absorption. In the water-absorbing woven/knit fabric, the regions independent of one another increase in area and thickness or in area or thickness upon water absorption. As a result, the composite fabric material undergoes a three-dimensional structural change.

Cette invention se rapporte à un matériau de tissu qui comprend un tissu tissé/tricoté absorbant l'eau, qui, lorsqu'il absorbe l'eau, s'étend et/ou devient plus épais de 10 % ou plus, comparé au tissu à l'état sec ; un tissu tissé/tricoté, un tissu non tissé, un film de résine, ou une couche de revêtement de résine qui ne subit sensiblement aucun changement au niveau de ses dimensions et de son épaisseur lorsqu'il absorbe l'eau, comparé à ce même tissu ou couche de revêtement de résine à l'état sec; et un système inhibant un changement de dimensions lié à l'absorption de l'eau, le système étant attaché ou fixé par des coutures à au moins un côté du tissu tissé/tricoté absorbant l'eau, afin de couvrir une partie de la surface et de laisser des régions exposées, indépendantes les unes des autres ou afin de couvrir la surface entière, et le système inhibant cette partie du tissu tissé/tricoté à laquelle le système est attaché ou fixé par des coutures pour l'empêcher de changer de zone lorsque le tissu absorbe l'eau. Dans le tissu tissé/tricoté absorbant l'eau, les régions indépendantes les unes des autres augmentent en dimensions et/ou en épaisseur lorsqu'il absorbe l'eau. Il en résulte que le matériau de tissu composite subit un changement structurel tridimensionnel.

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