Method and device for producing a spunbonded nonwoven fabric
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United States of America Patent
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Mar 20, 2007
Grant Date -
May 12, 2005
app pub date -
Dec 17, 2004
filing date -
Jul 25, 2000
priority date (Note) -
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Abstract
A method for producing a spunbonded nonwoven fabric by extruding a linear sheet of filaments arranged parallelly side by side in the form of a curtain from a plurality of spinning capillaries, involving aerodynamical pulling off and drawing of the filament sheet, the filament sheet (8) which emerges from the drawing duct (12) or which is pulled off a spool being moved laterally crosswise by an air flow having periodically changing directions, the air flow being oriented alternately at an angle toward the filament sheet (8) as viewed in the horizontal plane.
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