Low-density nonwoven fabric and production method and installation therefor and uses
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United States of America Patent
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N/A
Issued Date -
Jan 19, 2006
app pub date -
Oct 7, 2003
filing date -
Oct 18, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The invention concerns an installation for nonwoven production, characterized in that it comprises a spunbonded web plant whereof the die is inclined at an angle of 10 to 60.degree. and preferably of 20 to 50.degree. relative to the displacement direction of a conveyor and preferably two spunbonded web plants whereof the dies have opposite inclinations, said conveyor whereon filaments are deposited from the die(s) in the form of a web, a station for compressing the thus formed web into a web compressed perpendicular to its plane, optionally a station for calendering the compressed web, followed by a station for consolidating by pressurized water jet spray the compressed and optionally calendered web with a jet spraying machine comprising a metal fabric whereof the wires have a diameter between 0.10 and 0.35 mm and which has more than 40 wires per cm and preferably 10 to 30 wires per cm both in warp direction and in weft direction or with a water jet spraying machine including a sleeve with perforations of 50 to 600 microns and having 20 to 200 perforations per cm.sup.2.
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Cited Art Landscape
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