B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 29/02 (2006.01) B32B 27/10 (2006.01) B32B 38/06 (2006.01) D04H 1/70 (2006.01)
Patent
CA 2649356
The present invention is directed to a nonwoven fabric made from a composite of nonwoven and pulp where the nonwoven has a high loft derived from a heat set three-dimensional relief structure and/or hydroengorged fiber structure. A nonwoven web is hydraulically treated to create a hydroengorged material having an increased loft. Alternatively a nonwoven web is treated to have a heat set three-dimensional relief structure. The treated web is then hydroentangled with pulp to form a cotendered nonwoven/pulp composite fabric.
L'invention concerne un voile non-tissé constitué d'un composite de non-tissé et de pulpe. Le non-tissé présente un gonflant important résultant d'une structure en relief tridimensionnelle thermofixée et/ou d'une structure de fibres traitée par hydro-engorgement. On traite le voile non-tissé au moyen de fluides pour former un matériau hydro-engorgé présentant un gonflant accru. Dans un mode de réalisation différent, on traite le voile non-tissé de manière à obtenir une structure en relief tridimensionnelle thermofixée. On lie ensuite le voile traité par hydroliage avec la pulpe pour former un voile composite non-tissé/pulpe co-attendri.
Kauschke Michael
Turi Mordechai
First Quality Nonwovens Inc.
Osler Hoskin & Harcourt Llp
LandOfFree
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