A study of the impact of elastane ratio on mechanical properties of cotton wrapped elastane-core spun yarns

Composite yarns with elastane have become more and more used to take advantage of the filament properties. Indeed, the elastane filament improves the yarn's elasticity. However, the elastane ratio is an important factor influencing the yarn's strength. Thus, we study the effect of elastane ratio on the mechanical properties of cotton covered elastane-core spun yarns with the same twist factor and various elastane ratios. This study indicates that the elastane ratio is an important factor influencing the tenacity and elongation at break of yarns.