Friction Spinning DREF Technology
topic
DREF friction spinning opens fibre from sliver using a high-speed opening roller and deposits fibres onto the convergence zone between two friction drums rotating in the same direction, with suction through perforated drum surfaces drawing fibres into the friction nip where surface friction inserts twist at delivery speeds of 200 to 300 metres per minute for core-wrapper yarns up to Ne 20 from diverse fibre types.
Role
Provides an alternative high-speed spinning technology capable of processing short, irregular, and recycled fibres unsuitable for ring or rotor spinning into coarse count yarns for mop heads, blankets, and industrial yarns, with the friction spinning principle enabling multi-component core-wrapper yarn structures incorporating different fibre types in each yarn component for specialised functional yarn products.