Research on Siro fancy yarn properties based on the novel drafting rubber roller

• Published in: Journal of the Textile Institute Vol. 115; no. 6; pp. 958 - 969
• Main Authors: Dong, Manchen, Jiang, Hongxia, Liu, Jihong
• Format: Journal Article
• Language: English
• Published: Manchester Taylor & Francis 02.06.2024; Taylor & Francis Ltd
• Subjects: back draft; Density; Fancy Siro yarn; Fancy yarns; Knots; Rollers; Rubber; rubber roller; Slivers; Spinning machines; yarn cycle; yarn properties
• ISSN: 0040-5000; 1754-2340
• DOI: 10.1080/00405000.2023.2203035

Due to the intimate relationship with the yarn's properties, rubber rollers are an integral component of the drafting process. An innovative method for generating colored Siro yarns with regularly variable linear density is discussed in this article. To manufacture Siro yarns, the procedure includes altering the rubber rollers on a ring-spinning machine. By modifying the sorts of back-top rubber rollers and including roving slivers of different hues, this form of Siro yarns may be manufactured. These alterations to the shape of the rubber rollers produce exquisite yarn. Due to the employment of rubber rollers with dynamically varying diameters, a jaw with an imperfect engagement is formed. This leads to an incomplete draft, which forms a coarse knot with a continuous variance in yarn density along the yarn length direction. The Siro fancy yarns are spun using two distinct colors of roving slivers and drafting multiples. The objective of this study was to examine the impact of two rubber rollers of different diameters on the coarse knot cycles, the rear zone drafting multiplier, and the linear density of slub Siro colored yarns.