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Yarn Formation and Recent Developments
Published in Asis Patnaik, Sweta Patnaik, Fibres to Smart Textiles, 2019
Slub yarn is a yarn containing thick places of different thickness and length that is achieved by programmed acceleration of back and middle roller in ring spinning, at the same time maintaining the front roller at a constant speed. Slub yarns are produced with a change in mass at a constant speed with varying twist factors. In these yarns, the twist per metre in the yarn remains the same. The slub yarns can also be produced with different variations in length and thickness of effect. Equal slub length and thicknessDifferent slub length but same thicknessDifferent slub length and thicknessSlub over slub with different length and thicknessReverse slub
Research on Siro fancy yarn properties based on the novel drafting rubber roller
Published in The Journal of The Textile Institute, 2023
Manchen Dong, Hongxia Jiang, Jihong Liu
In the industry of yarn processing, the processing of fancy yarn is a prominent topic of interest due to the distinctive structure and eye-catching look of this type of yarn (Petrulyte, 2008). Fancy yarns can not only be utilized in the production of fabrics for garments, but they can also be put to use in the production of bedding, furniture decorations, travel goods, and a wide range of other items (Ceven & Gunaydin, 2018; Ertekin et al., 2022; Hua et al., 2014; Kumpikaite & Neniene, 2008; Kumpikaite et al., 2010a, 2010b; Ragaisiene & Kumpikaite, 2010; Sengupta & Debnath, 2010). Customers like fancy slub yarns because they can provide fabrics and garments with a distinctive texture and look (Kumpikaite & Neniene, 2008; Kwasniak, 1997). This is one reason for their popularity. The fact that these yarns have attributes such as variable segment length and variable linear density makes them appealing to customers who purchase them (Mukhopadhyay et al., 2017; Ruan et al., 2021; Zhang et al., 2016).
Visual aesthetic perception of handwoven cotton fabrics
Published in The Journal of The Textile Institute, 2019
P. Phoophat, H. Yamamoto, S. Sukigara
The differences between the hand-spun, machine-spun, and slub yarns were visualized with a 3 D microscope, as shown in Figure 2a, and the machine-spun warp is shown in Figure 2b. The thick and thin sections along the yarn were clearly visible in the hand-spun yarn, whereas such variance in thickness was much smaller for the machine-spun yarn (Figure 2c). Slub yarn was intermediate between the hand- and machine-spun yarns. This is because slub yarn is intentionally machine-spun with thick sections (slub) alternating with thin sections at a regular distance (slub distance). The samples were not dyed or bleached and were yellow-gray. When the chromaticity was measured by a spectrophotometer (CM-3600d, Konica Minolta) and expressed as CIELAB (2008) L*, a*, b* values, the average chromaticity was (L*, a*, b*) = (85, 0.42, 12.14) and the average color distance range was 1.07 (standard deviation =0.57). The effect of sample color on perception was small.