17. Apron roller with apron
Steel fluted bottom roller
Synthetic rubber coated top roller
18.
19.
20. Introduction
Rotor spinning or open-end spinning is a technology
for creating yarn without using a spindle. •It was
invented and developed in Czechoslovakia. •Open End
spinning is also known as break spinning or free fiber
spinning
Bakkar Start
21. To provide a more economical spinning system than
conventional ring spinning through higher
productivity
To produce yarn of a quality that matches or surpasses
that of the conventional ring spinning.
25. High delivery speeds;
Low yarn production costs (lower than those of ring
spinning);
Elimination of rewinding;
Low end breakage rates;
Yarn character similar to that of ring-spun yarn;
No wrapping fibers;
Optically good mass evenness (well suited to knitted
goods);
Better and softer handle than that of rotor-spun yarn;
Smooth yarn appearance.
Mohiuddin start
26. Low yarn strength;
High tendency to snarl;
Higher number of fibers needed in yarn cross-section;
Difficulty of keeping spinning conditions constant;
High air consumption;
Increasing unevenness and imperfections with
increasing spinning speed, and further reduction in
yarn strength.