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.

No abstract

Elastic recovery is one of the most important mechanical properties especially of clothing applications. This property is more and more significant when the textile structure contains elastane filament and has significant elasticity. In this study, we investigate the effect of the Dorlastan Ò draft and yarn count on the elastic recovery of cottoncovered Dorlastan Ò core spun yarns. These yarns are used as weft yarns in denim fabrics. Dorlastan Ò core spun yarns with different counts 100, 50, and 25 tex, with different elastane drawings and with the same twist factor are used. Our test results revealed that the Dorlastan Ò ratio and yarn count are important factors in influencing the elastic recovery.

No abstract

No abstract