A ribbon draw-off nozzle to get an open-end rotor spinning device includes a front surface, a nozzle bore, and a funnel-shaped yarn deflection surface linking the front surface and the nozzle bore. The front surface adjoins the yarn deflection surface. The front surface along with the yarn deflection surface form an effective diameter (D.sub.W) of the ribbon draw-off nozzle. The effective diameter (D.sub.W) of the ribbon draw-off nozzle is less than 8 mm, as well as the yarn deflection surface comprises a radius of curvature (R) of less than 2.5 mm.


To view all patent detail click here


IP reviewed by Plant-Grow agriculture technology news