False twist device for an open-end spinning device

An open-end spinning device of a rotor spinning machine, comprising:

• a yarn draw-off nozzle;
• a false twist device arranged downstream from the yarn draw-off nozzle in a yarn draw-off direction;
• the false twist device further comprising:
• a tubular carcass;
• a plurality of false twist edges arranged behind one another in a yarn draw-off direction through the device, each of the false twist edges inclined at an angle (α) in the carcass relative to the yarn draw-off direction;
• the plurality of false twist edges configured in an interior of the carcass such that each individual false twist edge imparts a deflection to a yarn drawn through the carcass;
• and
• the plurality of false twist edges offset in a circumferential direction in the carcass such that the yarn drawn through the carcass is also simultaneously subjected to a spatial, helical, deflection through the successive deflections on the false twist edges.

A method for introducing a false twist in a yarn generated in an open-end spinning device of a rotor spinning machine, comprising:

• drawing the yarn off through a yarn draw-off nozzle;
• pulling the yarn through a plurality of false twist edges in a false twist device arranged downstream from the yarn draw-off nozzle, whereby a false twist is imparted to the yarn;
• and
• imparting a spatial, helical deflection to the yarn with the false twist edges to provide an additional component of the false twist imparted to the yarn.