Warp and weft fabric based on predominantly untwisted...

D - Textiles – Paper – 03 – D

Patent

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D03D 15/00 (2006.01) D03D 3/00 (2006.01) D06C 15/02 (2006.01)

Patent

CA 2150468

A warp and weft fabric based on multifilament yarn. At least 80 wt % of the yarn has a combination of the following features: (a) the yarn count, for a given fabric substance, is greater than the conventional yarn count; (b) the yarn twist is no greater than the original twist of the yarn prior to weaving, which yarn, in an equal proportion, has 0 twists per metre; (c) the yarn width over the whole yarn length is at least as great as the original yarn width prior to weaving. Said yarn constitutes all the yarn in the direction comprising the majority by weight of the yarn when the weight ratio of weft yarn to warp yarn is at least 80/20, and all the fabric yarn when said ratio is below 80/20, and the fibre volume ratio is substantially constant in the fabric and at least as high as the volume ratio in a conventional fabric based on yarn with the same or a lower count.

L'invention concerne un tissu et trame à base de fils techniques multifilaments, dont au moins 80 % en poids des fils présentent en combinaison les caractéristiques suivantes: (a) le titre des fils, pour un grammage donné du tissu, est supérieur à celui traditionnellement utilisé, (b) les fils ne présentent pas de torsion supérieure à la torsion d'origine des fils avant tissage, lesquels sont, dans la même proportion, des fils à 0 tour de torsion/m, (c) la largeur des fils est sur toute la longueur des fils, supérieure ou égale à la largeur d'origine des fils avant tissage; ces fils constituant tous les fils dans la direction comportant la plus grande part de fils en poids lorsque le rapport en poids des fils de trame et des fils de chaîne est supérieur ou égal à 80/20 et tous les fils du tissu lorsque ce rapport est inférieur à 80/20, le taux volumique de fibres étant sensiblement constant dans le tissu et supérieur ou égal à celui d'un tissu traditionnel à base de fils de titre égal ou plus faible.

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