Mechanisms of wrapper fibre formation in rotor spinning: An experimental approach

Abstract Open-end rotor-spun yarns, unlike ring-spun yarns, are basically of a three-part construction: a tensely packed core of (straight) fibres substantially aligned with the yarn axis, more loosely packed fibres twisted around the core and wrapper fibres on the outside. The presence of wrapper fibres on the yarn surface is a characteristic feature of open-end rotor-spun yarns. In this study, the mechanics of twist insertion and the possible causes and mechanisms of wrapper fibre formation in rotor spinning under different operating conditions have been investigated. Keywords: Rotor spinningmechanismswrapper fibre formation

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