Electronic Yarn Clearer Technology
topic
Electronic yarn clearers use capacitive, optical, or combined sensors measuring yarn mass and diameter continuously at winding speeds up to 2000 metres per minute, comparing real-time measurements against programmable cut limits for thick places, thin places, neps, and foreign fibres, triggering cutter and automatic splicer activation within 5 milliseconds of fault detection to remove and rejoin at the fault location.
Role
Performs the primary yarn quality upgrading function in winding by detecting and removing fault lengths from ring and rotor spun yarn that would cause weaving stops, fabric defects, and customer quality rejections, with clearer cut limit settings determining the trade-off between fault removal completeness and excessive cutting frequency that reduces winding efficiency and splice concentration in packages.