D - Textiles – Paper – 04 – B
Patent
D - Textiles, Paper
04
B
D04B 1/20 (2006.01) A41B 1/00 (2006.01) D02G 3/04 (2006.01) D03D 15/04 (2006.01) D04B 21/00 (2006.01) D06M 15/53 (2006.01) D01F 8/12 (2006.01)
Patent
CA 2580530
A woven/knit fabric in which the porosity, upon humidification, reversibly decreases from the porosity in a dry state. The fabric comprises: crimped fibers (A) whose percentage crimp decreases upon humidification; and fibers (B) selected among non-crimped fibers or crimped fibers whose percentage crimp does not substantially change upon humidification. Crimped fibers (A) collected from this woven/knit fabric have a difference between the percentage crimp in a dry state DCf (%) and the percentage crimp in a humidified state HCf (%) (DCf-HCf) of 10% or larger. In the woven/knit fabric, the average RA of the rate of dimensional change in the warp (or wale) direction RP (%) between the humidified state and the dry state and of the rate of dimensional change in the weft (or course) direction RF (%) between the humidified state and the dry state (RA=(RP-RF)/2 (%)) is 5% or higher.
Tissu tissé/à mailles dans lequel la porosité, lors de l'humidification, diminue d'une manière réversible par rapport à la porosité à P' état sec. Le tissu comporte : des fibres frisées (A) dont le pourcentage de frisure diminue lors de l'humidification ; et des fibres (B) sélectionnées parmi des fibres non frisées ou des fibres frisées dont le pourcentage de frisure ne change pas sensiblement lors de l'humidification. Les fibres frisées (A) recueillies à partir de ce tissu tissé/à mailles affichent une différence entre le pourcentage de frisure à P' état sec DCf (%) et le pourcentage de frisure à P' état humidifié HCf (%) (DCf-HCf) de 10 % ou plus. Dans le tissu tissé/à mailles, la moyenne RA du taux de changement dimensionnel dans le sens de la chaîne (ou colonne) RP (%) entre l'état humidifié et l'état sec et du taux de changement dimensionnel dans le sens de la trame (ou rangée) RF (%) entre l'état humidifié et l'état sec (RA=(RP-RF)/2 (%)) est de 5 % ou plus.
Morioka Shigeru
Yamaguchi Takeshi
Yasui Satoshi
Yoshimoto Masato
Borden Ladner Gervais Llp
Teijin Fibers Limited
LandOfFree
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