Reinforced nonwoven fire blocking fabric having ridges and...

Details Reinforced nonwoven fire blocking fabric having ridges and... Reinforced nonwoven fire blocking fabric having ridges and...

D - Textiles, Paper

04

H

D04H 13/00 (2006.01) A47C 27/00 (2006.01) B32B 5/26 (2006.01)

Patent

CA 2582968

This invention relates to a thin reinforced nonwoven fabric having ridges and grooves for fire blocking an article and articles containing such fabrics. When exposed to heat or flame, the fabric is capable of increasing to a thickness that is at least 1.5 times its original thickness. The fabric comprises an open mesh scrim having a having crimped, heat resistant organic fibers compressed thereon and held in a compressed state by a thermoplastic binder, on which is imparted a ridge and groove structure. When subjected to high heat or flame, the binder in the structure softens, releasing the restrained crimped fibers and any ridges and grooves and allowing the thickness of the fabric to increase.

L'invention porte sur un tissu non tissé renforcé mince présentant des reliefs et des creux qui permet d'ignifuger un article, et sur des articles contenant le tissu précité. Lorsqu'il est exposé à la chaleur ou à une flamme, le tissu de l'invention est capable d'augmenter son épaisseur jusqu'à au moins 1,5 fois son épaisseur initiale. Le tissu de l'invention comprend un canevas à couches superposées biaisées sur lequel sont comprimées des fibres organiques crêpées résistantes à la chaleur, qui sont maintenues à l'état comprimé par un liant thermoplastique, canevas auquel on imprime une structure en reliefs et en creux. Lorsqu'il est soumis à une chaleur intense ou à une flamme, le liant de la structure ramollit, libérant les fibres crêpées retenues et les reliefs et les creux formés, et permettant au tissu d'augmenter son épaisseur.

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