Opening Roller and Fibre Transport in Rotor Spinning
topic
The opening roller covered in metallic sawtooth wire individuates sliver fibres at 6,000 to 9,000 rpm against the feed roller, with fibre transport through the transport tube using rotor suction at 80 to 120 millibars achieving fibre deposition rates in the rotor groove that determine yarn evenness, with transport tube geometry and suction level optimisation being critical for uniform fibre deposition and twist propagation into the rotor.
Role
Performs the fibre opening and transport operations that replace all ring spinning preparation stages from carding through roving in the open-end spinning sequence, with opening roller wire type, speed, and condition directly determining the degree of fibre individualisation that governs rotor yarn evenness, nep content, and the frequency of rotor cleaning required to remove fibre and trash accumulation.