시스/코어 단면 구조를 갖는 하이브리드 사이로스펀 방적사 제조 조건에 따른 양모 방적사의 물리적 특성 변화에 관한 연구 = 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

다국어 초록 (Multilingual Abstract)

As the need for innovative spinning technology to replace two-ply yarns withthe earlier single yarn manufacturing (spinning) process is emerging, new technologies arebeing 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 spunyarn and the yarn shape according to the control factors in the manufacturing of the normalsirospun yarn and the hybrid sirospun yarn in the newly developed composite structureyarn with a sheath/core cross-section. The result of the analysis of the spun yarnproduced using the hybrid yarn spinning technology compared to the existing yarn bynormal sirospun confirmed that the higher the draft ratio of the spinning method and thespinning front roller, the higher were the metric count, coefficient of variation, and irregularityof the yarn; the tensile strength and tensile elongation of the spun yarn weredecreased as well. However, it was observed that the cross-section of the spun yarn ideallyformed into a sheath/core structure as required according to the increase in the spinningfront roller draft ratio. However, when the draft ratio was excessively large, the spun yarnshowed a tendency to leave the twist region and formed a small hairy structure. It isexpected that the new product development required by the market will be possible if thecontrol elements of the composite structure are optimized.

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