Webs having deactivable expansion obstruction means

Details Webs having deactivable expansion obstruction means Webs having deactivable expansion obstruction means

D - Textiles, Paper

06

C

D06C 3/00 (2006.01) A61F 13/15 (2006.01) D04H 1/54 (2006.01) D04H 13/00 (2006.01) D06M 10/00 (2006.01) D06M 23/00 (2006.01)

Patent

CA 2329792

The present invention relates to web materials which can be used in the production of large quantities of articles which are assembled from, inter alia, continuously fed web materials. In particular, the present invention teaches web materials which are expandable by a predetermined elongation after the expandability of the web material has been activated externally. To provide this functionality, the web materials comprise at least one longitudinal expansion means and at least one deactivatable expansion obstruction means. Another object of the present invention is the process for making such web materials comprising the step of incorporating longitudinal expansion means and deactivatable expansion obstruction means into the web material.

La présente invention concerne des matériaux en bande pouvant être utilisés pour la production de grandes quantités d'articles assemblés à partir, inter alia, de matériaux en bande acheminés en continu. L'invention concerne en particulier des matériaux en bande pouvant être allongés selon un pourcentage d'allongement préétabli, après activation de la propriété d'allongement par des moyens externes. Pour utiliser cette fonctionnalité, les matériaux en bande comprennent au moins un moyen d'allongement longitudinal et au moins un moyen de blocage d'allongement désactivable. L'invention concerne en outre un procédé de fabrication de tels matériaux en bande, qui consiste à incorporer dans ledit matériau un moyen d'allongement longitudinal et, éventuellement, un moyen de blocage d'allongement désactivable.

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