Structure and Elasticity of Fine Elastomeric Yarns

Abstract

In this study, spandexes of three degrees of fineness are used as the core material with cotton fibers as the sheath to spin fine elastomeric yarns. We observe the cross sections of the core yarns and the migration of the spandex inside the core yarn concluding that producing a finer elastomeric yarn with a uniform structure is feasible. The results show that choosing the optimum spinning conditions gives a better cover effect to fine elastomeric yarn. In terms of elasticity, a 10 tex elastomeric yarn produced with a 2.2 tex/2f spandex core at a draw ratio of 4.0 and with a twist factor of 40 exhibits the best dynamic elastic recovery percentage.

Denim Fabrics Woven with Dual Core-Spun Yarns

“…In the literature, many researchers have been focused on elastane containing core-spun yarns in terms of elastane draft, elastane ratio, elastane linear density, elastic yarn positioning, twist factor etc. in order to obtain optimum yarn properties [2,[5][6][7][8][9][10][11][12][13][14][15][16][17][18]. When twist factor increases, it will affect the tensile properties of elastic cotton core-spun yarn positively [12,18].…”

Dynamics of Elastic Knitted Fabrics for Sports Wear

“…A few papers were published on elastic properties of normal knitted fabrics [6,7,22] but hardly any on elastic fabrics [6][7][8][9][23][24][25].…”

Effects of process variables on physical characteristics of tri-component elastic-conductive composite yarns (t-ECCYs) using a modified ring frame

“…The elastic recovery increases with increasing spacing and then decreases when it reaches 17.5 mm. With respect to the twist, it exhibits an ascending trend, which is the expected consequence of fortified cohesion of interfibers caused by higher twist, thus, restricts the mutual slippage [10]. As for the spindle speed, it exhibits a distinct upward trend.…”