The Effect of Single and Dual-Core Yarns Produced with Different Core Materials on the Elasticity and Recovery Properties of Denim Fabrics

Abstract

Elastic structures are preferred for improving the elasticity and recovery of the fabrics. Bagging, which is a three-dimensional fabric deformation, is an undesirable appearance of fabrics. The lack of dimensional stability or recovery after pressure on the fabrics causes bagging deformation. In recent years, denim manufacturers prefer double-core yarns to cope with the problem of bagging. In this study, various types of weft yarns were produced by using different core materials in different combinations. Double-core and single-core ring-spun yarns (Ne 18, ae 4,4) were used as weft yarns in weaving. Yarn and fabric samples were conditioned under standard atmospheric conditions and measured according to the related test standards. Yarns were tested and evaluated for important physical and mechanical properties such as evenness, imperfections, tenacity, breaking elongation, hairiness and yarn liveness. For denim fabric samples, all tests were performed after 3 consecutive domestic washing processes. Test results showed that there are significant differences between fabric properties depending on the weft yarn characteristics. By using double-core weft yarns in denim fabric production, consumers can have stretch jeans for improving body movement comfort while exhibiting low growth and shrinkage values.

Low-bagging (growth) stretch denim yarn production by spinning optimization of cotton-wrapped dual-core elastane and T400 multifilament

“…Bagging is a three-dimensional residual deformation occurred from the lack of dimensional stability or recovery when repeated or prolonged stress is imposed on the fabric during wear. It results in deterioration in appearance in different places of garments such as elbows, knees, pockets, hips and heels that cause dissatisfaction among wearers [ 4 , 5 ]. To reduce the bagging deformation of denim, a new generation of yarn, called dual-core or double-core yarn, has recently been developed [ [6] , [7] , [8] , [9] ].…”

“…The literature review provides enormous outcomes on the improvement of the properties of core-spun yarns containing single-core filament, mostly elastane. Textile researchers and producers have very recently developed dual-core yarns, and due to being a new type, there is a special focus on these yarns [ 4 , 7 , 8 , [13] , [14] , [15] , [16] , [17] , [18] , [19] ]. However, less significant research on optimizing the spinning parameters of dual-core yarns highlights the need for further investigations.…”