Patent ID: 6105222
Filing Date: 2000-08-22
Classification: D04H

Abstract:
Device with a nozzle beam for producing fluid streams for stream braiding of the fibers of textile web moving forward transversely to the nozzle beam by means of a liquid-permeable substrate, the nozzle beam comprising an upper part that extends over a working width of the fiber web and a lower part fastened to the upper part in a fluid-tight manner, with a pressure chamber being located in the upper part over a length of the upper part, said pressure chamber being supplied with liquid that is under pressure and a nozzle sheet is mounted on a bottom part with holes for nozzles in a fluid-tight manner, characterized in thatthe nozzle beam is movably mounted to shift back and forth lengthwise only in a direction perpendicular to the movement direction of the web;the nozzle beam is connected perpendicularly to the movement direction of the web with a unit for rapid reciprocating movements, said unit subjecting only the nozzle beam to oscillating movements that change at short intervalsthe oscillating movements of the nozzle beam have a frequency of at least 10 Hz with a forward movement of the web of at least one meter per minute;diameter of the nozzle holes is equal to or greater than 0.1 mm;an amplitude of the oscillating movements is equal to or greater than half of the distance (1) between the holes in the nozzle sheet; anda fluid pressure of the fluid streams is a minimum of 30 bars.