Multi-layer nonwoven fabric

Details Multi-layer nonwoven fabric Multi-layer nonwoven fabric

D - Textiles, Paper

04

H

D04H 1/54 (2006.01) A47L 13/16 (2006.01) B32B 5/06 (2006.01) B32B 7/08 (2006.01)

Patent

CA 2496582

A nonwoven fabric includes a first composite layer that includes from about 50% to about 90% by weight non-thermoplastic absorbent staple fibers and from about 10% to about 50% by weight thermoplastic fibers. A preponderance of the fibers at a first outer surface of the first composite layer comprise non- thermoplastic absorbent staple fibers and a preponderance of the fibers at a second outer surface of the first composite layer comprise thermoplastic fibers. The nonwoven fabric further includes a second composite layer that includes from about 50% to about 90% by weight non-thermoplastic absorbent staple fibers and from about 10% to about 50% by weight thermoplastic fibers. The second composite layer is adjacent the second outer surface of the first composite layer. The nonwoven fabric further includes bonded regions wherein a portion of the thermoplastic fibers of the first composite layer are fused to a portion of the thermoplastic fibers of the second composite layer, and further wherein the bonded regions have a plurality of contiguous voids.

Cette invention se rapporte à un tissu non tissé, qui comprend une première couche composite renfermant environ 50% à environ 90% en poids de fibres discontinues absorbantes non thermoplastiques et environ 10% à environ 50% en poids de fibres thermoplastiques. Une majeure partie des fibres au niveau d'une première surface externe de la première couche composite comprend des fibres discontinues absorbantes non thermoplastiques et une majeure partie des fibres au niveau d'une seconde surface externe de la première couche composite comprend des fibres thermoplastiques. Ce tissu non tissé comprend en outre une seconde couche composite renfermant environ 50% à environ 90% en poids de fibres discontinues absorbantes non thermoplastiques et environ 10% à environ 50% en poids de fibres thermoplastiques. La seconde couche composite est adjacente à la seconde surface externe de la première couche composite. Ce tissu non tissé contient en outre des zones collées et une partie des fibres thermoplastiques de la première couche composite sont liées par fusion à une partie des fibres thermoplastiques de la seconde couche composite, et les zones collées comportent en outre plusieurs vides contigus.

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