Patent ID: 6887331
Filing Date: 2005-05-03
Classification: D01D,D04H,Y10T

Abstract:
1. A method for producing a spunbonded nonwoven fabric by extruding a linear sheet of filaments, arranged side by side in parallel and laterally crosswise to a production direction, in the form of a curtain from a plurality of spinning capillaries, comprising the steps of: aerodynamical pulling off and drawing of a filament sheet ( 8 ) which one of emerges from a drawing duct channel ( 12 ) and is pulled off a spool, wherein the filament sheet is moved laterally crosswise to the production direction 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, wherein air pauses exist between the air flows.