Improved nonwoven with non-symmetrical bonding configuration

Details Improved nonwoven with non-symmetrical bonding configuration Improved nonwoven with non-symmetrical bonding configuration

D - Textiles, Paper

04

H

D04H 5/06 (2006.01) B32B 5/04 (2006.01) B32B 5/26 (2006.01)

Patent

CA 2381168

A nonwoven (10) having a low tensile strength and high elongation in the first direction (typically the CD (12)) and high tensile strength and low elongation in the second direction (typically the MD (14)). The nonwoven (10) has a plurality of bonding points (20) defining a total bonding area along the second direction (14) greater than along the first direction (12). Accordingly, the nonwoven has unbonded fiber portions (30) and bonded fiber portions (32), with a bonded portion/unbonded portion ratio greater along the second direction (14) than along the first direction (12). The bonding points (20) are preferably either circular (22) or oval (24) in plan.

L'invention concerne un non-tissé (10) présentant une faible résistance à la traction, et une élongation élevée dans un premier sens (généralement le sens travers CD (12)), et une résistance à la traction élevée et une faible élongation dans un second sens (généralement le sens machine MD (14)). Le non-tissé (10) comprend une pluralité de points (20) définissant une zone de liaison totale dans le second sens (14) plus grande que celle du premier sens (12). En conséquence, le non-tissé comprend des parties de fibres non liées (30) et des parties de fibres liées (32), le rapport parties liées/parties non liées étant plus élevé dans le second sens (14) que dans le premier (12). Les points de liaison (20) sont, de préférence, soit circulaires (22) soit ovales (24) dans un plan.

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