A Controlled Experiment on Yarn Hairiness and Fabric Pilling

Beltran, Rafael; Wang, Lijing; Wang, Xungai

doi:10.1177/0040517507079409

Cited by 47 publications

(30 citation statements)

References 9 publications

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“…Similar to the spinning process, it was shown that nozzle usage improves the yarn properties, in particular yarn hairiness decreases significantly. [15][16][17][18][19]…”

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confidence: 99%

Effect of Nozzle Structural Parameters on Hairiness of Compact-Jet Yarns

Yılmaz

Usal

2012

Journal of Engineered Fibers and Fabrics

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Hairiness significantly influences the appearance of yarns and fabrics. New methods and spinning systems have been offered to reduce it. Nevertheless, there is still the quest for easy, low-cost processes to produce good quality yarns with reduced hairiness. Therefore, due to its considerable importance for spun yarns, we worked on a new spinning method to decrease yarn hairiness. Many researchers have been studying the use of air nozzles in the spinning and also the winding processes, and they indicated that hairiness decreases by up to 40-50%. From this point, we investigated the use of an air nozzle on a compact spinning system and discussed the effect on yarn hairiness. The nozzle was positioned at the exit of the drafting system on a RoCoS compact spinning system and pressurized air was fed into the nozzle by the compressor during spinning. We called the combination of an air nozzle and a compact spinning system a Compact-Jet spinning system. In the literature, there are no such trials. At the end of the study, it was determined that a Compact-Jet spinning system truly improves hairiness by up to 40% in comparison to the compact spinning system and by up to 70% compared with the conventional ring spinning system. Regarding the nozzle structural parameters, the changes in hairiness indicate that the main hole diameter and nozzle outlet design make the most important contributions in reducing yarn hairiness; whereas the injector angle and nozzle head type show weaker effects. As a result, the Compact-Jet can be considered as an innovative spinning system providing the opportunity to produce less hairy yarn. Additionally, we believe that this study makes an important contribution to the research activities in the spinning field and its associated literature.

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“…Similar to the spinning process, it was shown that nozzle usage improves the yarn properties, in particular yarn hairiness decreases significantly. [15][16][17][18][19]…”

mentioning

confidence: 99%

Effect of Nozzle Structural Parameters on Hairiness of Compact-Jet Yarns

Yılmaz

Usal

2012

Journal of Engineered Fibers and Fabrics

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“…Therefore, the yarn surface appearance is closely related to the yarn surface hairiness. [12][13][14][15] Another key factor influencing appearance is yarn unevenness which refers to the mass variation of yarn. It is well known that an uneven yarn usually possesses a large amount of thick and thin regions.…”

Section: Key Factors Influencing Yarn Appearancementioning

confidence: 99%

A study on the relationship between irregularity and hairiness of spun yarns

Xia

Wang

et al. 2010

Textile Research Journal

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In this study, Photoshop software was used to do image analysis on the photos of spun yarns. The result showed that yarn could be divided into two parts: the surface hairs and the stem. Based on this finding, a mathematical model of yarn unevenness was built to analyze the relationship between yarn unevenness and surface hairiness. The relationships among the coefficients of mass variance of the yarn, the stem and the surface hairs, expressed as CV t , CV s and CV h , respectively, were investigated in detail. Results indicate that the CV s of an uneven yarn always coincides with the irregularity of the yarn hairiness. More specifically, the CV t of a yarn cannot be better than those of both yarn hairiness and stem (CV h and CV s ), even if one of them is excessive. It is rare for CV t to be higher than CV s after removal of yarn hairs. In particular, it is irrational for the CV t value to be higher than both CV s and CV h , which prompts a rethinking of the exact distribution of yarn hairs on the yarn body.

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“…During ring spinning, hairs will be formed when fiber ends migrate out of the spinning triangle zone and lose the hold of the front roller nip. 1 If yarn hairs are longer than 3 mm, they will be harmful to yarn post-processing efficiencies 2 and fabric qualities 3 due to the sever yarn surface frictional damage and increased hair entanglements to form neps or pilings. The spinning triangle can be reduced by using a heavier traveler and, therefore, hairiness can be reduced; 4,5 however, this method only gets a low hairiness reduction, which needs further improvements.…”

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Improving spun yarn properties by contacting the spinning strand with the static rod and self-adjustable disk surfaces

Liu

Xia

et al. 2017

Textile Research Journal

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To overcome the spun yarn unevenness deterioration and insufficient hairiness reduction for ring spinning with a static contact surface, this study introduced a modified method to improve spun yarn properties by contacting the spinning strand with the static rod and self-adjustable disk surfaces. The mechanism of the improvement of spun yarn properties was theoretically analyzed. Analysis results indicated that the combination of the static rod and self-adjustable disk surfaces could improve the yarn hairiness wrapping force without sever twisting blockage, resulting in a large yarn hairiness reduction and surface tight structure without irregularity deterioration. Correspondingly, the yarn tenacity should also become somewhat enhancement. Then, our theoretical analysis and prediction were validated by conducting such comparative experiments as spinning without a contact surface, spinning with a static rod surface, and spinning with a combination of the static rod and self-adjustable disk surfaces. The experimental results were in good agreement with our theoretical analysis and prediction.

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A Controlled Experiment on Yarn Hairiness and Fabric Pilling

Cited by 47 publications

References 9 publications

Effect of Nozzle Structural Parameters on Hairiness of Compact-Jet Yarns

Effect of Nozzle Structural Parameters on Hairiness of Compact-Jet Yarns

A study on the relationship between irregularity and hairiness of spun yarns

Improving spun yarn properties by contacting the spinning strand with the static rod and self-adjustable disk surfaces

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