Patent ID: 7191813
Filing Date: 2007-03-20
Classification: D01D,D04H,Y10T

Abstract:
1. A device for producing a spunbonded nonwoven fabric by extruding a linear sheet of filaments, arranged side by side in parallel, 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 emerges from a drawing duct channel ( 12 ) or which is pulled off a spool, wherein the filament sheet is 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 comprising: a spinning manifold having a plurality of spinning capillaries situated in a row, a cooling air duct, a drawing duct, a deposition belt, and at least one blowing duct ( 3 ) which is arranged beneath the drawing duct ( 12 ) in front of or behind the filament sheet ( 8 ), the blowing duct having air-outlet nozzles ( 10 , 11 ) which are aligned at an angle toward the filament sheet ( 8 ) as viewed in the horizontal plane.