Method of making heteroconstituent and layered nonwoven...

Details Method of making heteroconstituent and layered nonwoven... Method of making heteroconstituent and layered nonwoven...

D - Textiles, Paper

04

H

D04H 3/16 (2006.01) D01D 5/088 (2006.01) D01D 5/098 (2006.01)

Patent

CA 2291339

The present invention is directed to a method of forming a heteroconstituent nonwoven web including a mixture of different filament types simultaneously formed into the same web. The filament types may differ as to polymer composition, additive loadings, fiber size, fiber shape, and/or degree of crimping. The invention is also directed to a method of forming a multilayered nonwoven structure in which different filament types constituting different layers are simultaneously formed.

La présente invention concerne un procédé de fabrication d'un voile non tissé et à constituants multiples qui comprend un mélange de divers types de filaments mis simultanément sous forme d'un voile unique. Ces filaments peuvent varier au niveau de leur composition polymère, de leurs charges en additifs, de la taille ou de la forme de leurs fibres, et/ou de leur degré de frisage. Cette invention concerne également un procédé de fabrication d'une structure non tissée à plusieurs couches, dans laquelle divers types de filaments constituant les différentes couches sont fabriqués simultanément.

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