Yarn Loop Stability and Tensile Property Characterisation
topic
Air textured yarn quality characterisation measures loop count per metre by direct counting or image analysis, bulk factor by skein weight comparison, tensile strength and elongation at break by constant rate of extension tensile testing per ISO 2062, and loop stability under repeated extension cycles that assesses whether loops are pulled out under yarn tension applied during fabric formation, with loop stability being the primary quality parameter determining processing performance.
Role
Provides the quality characterisation data required for air textured yarn product specification and process optimisation by measuring the loop structure and tensile properties that determine both fabric aesthetic and processing performance in knitting and weaving, with loop stability in particular being the performance parameter that differentiates well-processed air-textured yarn from poorly processed yarn with insufficient loop entanglement that pulls out during fabric formation.