Fabric

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 7/08 (2006.01) D03D 15/00 (2006.01) D21F 1/00 (2006.01)

Patent

CA 2233864

A multi-layer fabric with paperside to lower surface weft ratios of greater than 1 in which all paperside weft yarns interlace with the warp yarns in an identical manner. The paperside weft yarns intermittently buttress against adjacent paperside weft yarns an d possess an average lateral crimp ratio of greater than 1.62 giving a fabric having an air permeability of less than 275 c.f.m. at 1/2 inch water pressure.

Cette invention concerne un tissu multicouche dont les proportions des fils de trame de la face papier par rapport à ceux de la surface inférieure sont supérieures à 1, tous les fils de trame de la face papier étant entrelacés avec les fils de chaîne de manière identique. Les fils de trame de la face papier butent de façon intermittente contre des fils de trame adjacents de ladite face papier et possèdent un rapport moyen de frisure latérale supérieur à 1,62, ce qui confère audit tissu une perméabilité à l'air inférieure à 275 pieds cubes par minute sous une pression d'eau d'un demi pouce.

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