Yarn draw-off tube for open-end spinner, has grooves in entry section with gentle entry slope and steep exit slope

摘要

The entry section (2) of a draw-off tube for an open-end spinner has grooves (9) with the entry side (7) at a gentle slope and the exit side beyond the bottom of the groove at a steep slope to give an impact wall. The entry profile can be a straight line or spherically curved to blend into the spherical curve of draw-off tube.