Rotor Yarn Structure and Properties vs Ring Yarn
topic
Rotor yarn has a three-component structure of core fibres with S-twist, wrapper fibres applied during twist propagation, and wild fibres on the surface, giving lower tenacity of 80 to 90 percent of equivalent ring yarn, higher bulk, lower hairiness, and better abrasion resistance due to the wrapper fibre reinforcement of the yarn surface that is exploited in towelling, denim, and workwear yarn applications.
Role
Defines the intrinsic quality characteristics that position rotor yarn in end-use applications where its specific structure provides advantages over ring yarn in bulk, uniformity, and surface abrasion resistance, while its lower tenacity compared to ring yarn limits its application in fine count and high-tenacity yarn applications where ring spinning remains technically superior.