A Comparative Strength Analysis of Denim Fabrics Made from Core-Spun Yarns Containing Textured Microfilaments

Abstract

Denim fabric is one of the most popular casual wear fabrics worldwide. The performance characteristics of denim fabrics have been improved by using functional fibers and elastane to make them comfortable to wear. Elastane fibers with high elasticity are used extensively in denim fabric production. Elastane fibers are generally used as the core part of the core-spun yarns as weft yarns. Besides elastane fibers; polyester and polyester derivatives are commonly used. This study examines the effects of filament fineness and yarn count on denim fabric performance. Textured polyester filaments with medium, fine and micro linear densities were used as the core part of the core-spun yarn and cotton fiber was used as sheath material. Yarn samples manufactured with the same production parameters at different yarn count were used as weft yarns of denim fabrics. Denim fabrics were produced with the same fabric cover factor to eliminate yarn count difference effects. Tensile, static tearing and dynamic tearing properties of denim fabrics were determined. To evaluate the effects of core part, 100 % cotton denim fabric was manufactured and tested. Statistical analysis was performed to analyze the significance of filament fineness and yarn count ratio. Results showed that there was a significant effect of filament fineness on tensile, static tearing and dynamic tearing properties of denim fabrics. In addition, it was found that yarn count had no significance effect on static tearing properties of denim fabrics.

Porosity and air permeability relationship of denim fabrics produced using core-spun yarns with different filament finenesses for filling

“…3,8,12 In earlier studies, it is seen that the increase in filament fineness from conventional to micro has a great influence on air permeability whether weft yarn comprises 100% filament yarns or staple fiber covered filament yarns. [33][34][35] Air permeability of a fabric determines its resistance to wind penetration in cold weather, and the extent of wind penetration affects the thermal insulation provided by the clothing in cold weather. 36,37 The decrease in air permeability of denim fabrics made of core-spun yarns containing textured filaments in each yarn linear density exhibits the increase in the number of filament in yarn cross-section from 36 filaments to 333 filaments.…”

Comparative analysis of cotton covered elastomeric hybrid yarns and denim fabric properties

“…The percentage of elastane in a cotton-covered core-spun yarn of a given linear density can be adjusted in two ways: by adjusting the elastane denier or changing the draft ratio, and these have influenced on fabric properties. 8 Filament fineness, elastane ratio, and yarn count affect denim fabric performance and significantly affect tensile and tearing strength 9–11 Also, having a higher elastane ratio increased the air permeability and elasticity and decreased the bagging and tensile strength of fabric samples. 12 The draw ratio of the core component and the twist factor of elastic core-spun yarns influence the bagging fatigue of woven samples.…”

Impact of Weft Yarn Density and Core-yarn Fibre Composition on Tensile Properties, Abrasion Resistance and Air Permeability of Denim Fabrics

“…Unfortunately, using elastic fibre in denim fabrics can reduce the lifespan of garments. Polyester or its derivates are added to improve fabric performance properties [6,11]. Many previous studies have focused on the evaluation of physical properties of cotton and elastane blended denim fabrics.…”

“…Many previous studies have focused on the evaluation of physical properties of cotton and elastane blended denim fabrics. Sarıoğlu and Babaarslan compared 100% cotton and core-spun yarn filament fineness and yarn count on tensile and tear strength [6]. Özdil compared tensile, tear and bagging properties of denim fabrics containing different percentage of elastane.…”