A Study on the Changes in the Physical Characteristics of Wool Spun Yarns according to the Manufacturing Conditions of Hybrid Sirospun Yarns with Sheath/Core Cross-sectional Structures
Vol. 59, No. 1, pp. 24-35,
Feb. 2022
10.12772/TSE.2022.59.024
PDF
Abstract
As the need for innovative spinning technology to replace two-ply yarns with
the earlier single yarn manufacturing (spinning) process is emerging, new technologies are
being developed to secure a suitable and ideal manufacturing process and quality competitiveness.
In this study, the effect was analyzed on the physical properties of the spun
yarn and the yarn shape according to the control factors in the manufacturing of the normal
sirospun yarn and the hybrid sirospun yarn in the newly developed composite structure
yarn with a sheath/core cross-section. The result of the analysis of the spun yarn
produced using the hybrid yarn spinning technology compared to the existing yarn by
normal sirospun confirmed that the higher the draft ratio of the spinning method and the
spinning front roller, the higher were the metric count, coefficient of variation, and irregularity
of the yarn; the tensile strength and tensile elongation of the spun yarn were
decreased as well. However, it was observed that the cross-section of the spun yarn ideally
formed into a sheath/core structure as required according to the increase in the spinning
front roller draft ratio. However, when the draft ratio was excessively large, the spun yarn
showed a tendency to leave the twist region and formed a small hairy structure. It is
expected that the new product development required by the market will be possible if the
control elements of the composite structure are optimized.
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