Elastomeric multicomponent fibers, nonwoven webs and...

D - Textiles – Paper – 04 – H

Patent

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Details

D04H 3/08 (2006.01) B01J 19/32 (2006.01) B29C 55/00 (2006.01) D01F 8/06 (2006.01) D01F 8/16 (2006.01) D02J 1/22 (2006.01) D06C 3/00 (2006.01)

Patent

CA 2503049

A bonded web of multi-component strands that include a first polymeric component and a second polymeric component is capable of overcoming a number of problems associated with nonwoven webs including both stickiness and blocking. The first polymeric component and second polymeric component are arranged in substantially distinct zones extending longitudinally along at least a portion of a length of the strands which make up the web with the second component containing a zone constituting at least a portion of the peripheral surface of the strand. The first polymeric component also has an elasticity which is greater than that of the second polymer component. A process producing elastomeric spunbonded nonwoven fabrics which utilizes the activation by incremental stretching of the strands is also provided.

L'invention concerne un voile lié constitué de faisceaux de fibres multicomposants comprenant un premier composant polymère et un deuxième composant polymère. Ce voile permet de résoudre un certain nombre de problèmes liés aux voiles non tissés, y compris le comportement au collage et l'adhérence de contact. Le premier composant polymère et le deuxième composant polymère sont disposés dans des zones sensiblement distinctes s'étendant longitudinalement le long d'au moins une partie d'une longueur des faisceaux de fibres qui constituent le voile, le deuxième composant contenant une zone constituant au moins une partie de la surface périphérique du faisceau de fibres. Le premier composant polymère a également une élasticité qui est supérieure à celle du deuxième composant. L'invention concerne également un procédé de production de tissus non tissés élastomères qui utilisent l'activation par étirement incrémentiel.

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