Process for the production of a complex nonwoven material and novel type of material thus obtained
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United States of America Patent
Stats
-
Oct 8, 2002
Grant Date -
Jul 5, 2001
app pub date -
Jan 9, 2001
filing date -
Jul 31, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a method which consists in continuously: producing by carding (1) a web (10 from chemical fibers; subjecting the resulting web (1) to a hydro-entanglement using water jets, treatment which consists in: (a) consolidating the web (10) by the action of a first series of water jets (3), the web (10) being supported by a drum (4) comprising micro-perforations; (b) subjecting the consolidated web (10) to structuring, by the action of one or several series of water jets (12); depositing on the surface of the resulting structured lap (10a) natural fibers (14) by pneumatic layering (6); subjecting the resulting complex (20) to the action of another series of water jets (7) acting on the surface covered with natural fibers.
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