Creased nonwoven web with stretch and recovery

Details Creased nonwoven web with stretch and recovery Creased nonwoven web with stretch and recovery

D - Textiles, Paper

04

H

D04H 1/54 (2006.01) B32B 3/28 (2006.01) B32B 5/04 (2006.01) B32B 5/26 (2006.01) D06C 3/00 (2006.01) D06J 1/00 (2006.01) D06J 1/04 (2006.01)

Patent

CA 2222443

Nonwoven fabrics having a desirable level of bulk, elasticity and low permanent set are produced by creasing a precursor web and heat setting the creases. Such webs may have varying basis weights and compositions depending on the intended end use. Applications disclosed include components for personal care products such as disposable diapers and feminine hygiene products, for example, as well as garment applications such as training pants, surgical gowns and the like. Also, absorbent products such as wipers are disclosed. Methods for forming the creased nonwoven fabric are disclosed using interdigitated rolls for creasing in the machine direction or in the cross- machine direction.

L'invention porte sur des non-tissés présentant un degré souhaitable de bouffant et d'élasticité et une faible déformation permanente obtenus par fronçage d'un matériau précurseur en bande puis thermofixation des fronces. Lesdits matériaux précurseurs peuvent présenter différents poids et compositions de base selon leur utilisation finale. Les applications envisagées comportent par exemple des composants pour produits pour soins corporels tels que des couches à jeter ou des articles d'hygiène féminine, ainsi que des parties de vêtements du type sous-vêtements d'exercice, vêtements pour salle d'opération, etc. ou des matériaux absorbants tels que des torchons. L'invention porte également sur les procédés de fabrication desdits non-tissés froncés à l'aide de rouleaux à dentures emboîtées permettant de créer des fronces soit longitudinales, soit transversales.

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