Web materials having elastic-like and expansive zones

Details Web materials having elastic-like and expansive zones Web materials having elastic-like and expansive zones

D - Textiles, Paper

04

H

D04H 1/54 (2006.01) A61F 13/15 (2006.01) B29C 55/18 (2006.01)

Patent

CA 2239425

A web material exhibiting both an elastic-like and an expansive behavior in response to an applied elongation. The web material includes an elastic-like zone and an expansive zone disposed adjacent to the elastic-like zone. The expansive zone allows the elastic-like zone to extend without generating excessive tensional forces. The elastic-like zone includes a strainable network having a first region and a second region. The second region has a surface-pathlength greater than the surface-pathlength of the first region. The expansive zone has a surface-pathlength greater than the first region and different than that of the second region.

L'invention concerne une bande de matériau ayant des propriétés élastiques et des propriétés d'extensibilité, lorsqu'elle est soumise à une traction. Le matériau comprend une zone élastique et une zone extensible jouxtant la zone élastique. La zone extensible permet un allongement de la zone élastique, sans générer des forces de rappel excessives. La zone élastique comprend un réseau allongeable ayant une première région et une seconde région. La seconde région a une longueur de trajet en surface supérieure à celle de la première région. La zone extensible a une longueur de trajet en surface supérieure à celle de la première région et différente de celle de la seconde région.

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