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A Comparative Study between Physical Properties of Compact and Ring Yarn Fabrics Produced from Medium and Coarser Yarn Counts

DOI: 10.1155/2014/569391

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Abstract:

In compact spinning, fibers in drawing stage are condensed using air suction, which results in the produced yarns which significantly differ from ring spun yarns in their physical and mechanical properties. This study compares between physical properties of compact and ring yarn fabrics woven from coarser and medium yarn counts. The experimental results were statistically analyzed using ANOVA. The findings of this study revealed that woven fabrics produced from compact spun yarns are superior to those produced from ring spun yarns with respect to breaking strength, breaking elongation, abrasion resistance, tearing strength, and air permeability. 1. Introduction Compact spinning, which is a modified version of ring spinning, produces a novel yarn structure, and the development of compact spinning has set new standards in yarn structure [1, 2]. However, compact spinning is oriented to better fiber utilization and the high quality rather than higher productivity [3]. In conventional ring spinning, the zone between the nip line of the pair of delivery rollers and the twisted end of the yarn is called the “spinning triangle.” This represents the critical weak spot of the ring spinning process. In this zone, the fiber assembly contains no twist. The edge fibers splay out from this zone and make little or no contribution to the yarn strength. Furthermore, the edge fibers lead to the familiar problem of yarn hairiness [4, 5]. In compact spinning, the fibers which have left the drafting system are guided via the perforated drums or lattice aprons over the openings of the suction slots. Following the air flow, the fibers move sideways and are consequently condensed. This condensing has such a favorable effect on the ratio of the width of the condensed fiber to yarn diameter that the spinning triangle is nearly eliminated. When spinning without a spinning triangle, almost all the fibers are incorporated into the yarn structure under the same tension. As the twist insertion takes place very close to the nip line, even short fibers can take up tension. This results in increased strength, as more fibers contribute to the yarn strength. The utilization degree of fibers can thus be increased [6–11]. According to previous studies, mechanical compact spinning significantly improves yarn tensile properties and reduces its hairiness [12, 13]. Until now there are many studies about the comparison of the conventional ring and compact yarns properties [14–18]. Most researches operate on the comparison between compact and ring yarn woven fabrics focused on fabrics made from

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