Effect of twist levels in polyester yam on elastic behavior of polyester/ spandex air covered yarn

摘要

Elastomeric yarns are used for tight fit sportswear, compression bandages and now functional in the regular tight fit manufactured garments for easy body movement and quick energy recovery. These garments are mostly used for short duration sports activities, wherever the person requires unrestricted energy and power. Assessment of dynamic elastic recovery and recovery ratio is necessary to study the contribution of yarns and fabrics for sportsmen performance to improve their stamina level. In this paper, the effect of twist levels in polyester yarn on elastic properties of polyester/span-dex air covered yarn was studied. It is concluded that the number of nodes/m, dynamic elastic recovery (DER) % and recovery ratio (RR) °/o of produced yarn increases with the twist levels in polyester sheath yarn and has significant effect.