Effect of repeated winding on carded ring cotton yarn properties

Xia, Zhigang; Wang, Xin; Ye, Wenxiang; Xu, Weilin; Eltahir, Hafiz A.

doi:10.1007/s12221-011-0534-1

Cited by 10 publications

(8 citation statements)

References 18 publications

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“…The number of hairs affects the weaving efficiency, fabric handfeel and product quality [24]. Hairs ě3 mm long are harmful because they cause pilling and shed-clinging problems [25,26]. Figure 5b shows that the harmful hairs of three ring-spun complex yarns accounted for 1%-5% of the total number of hairs.…”

Section: Hairiness Of Yarnmentioning

confidence: 99%

Comfort and Functional Properties of Far-Infrared/Anion-Releasing Warp-Knitted Elastic Composite Fabrics Using Bamboo Charcoal, Copper, and Phase Change Materials

Pan

Hsieh

et al. 2016

Applied Sciences

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Elastic warp-knitted composite fabrics with far-infrared emissivity and an anion-releasing property were prepared using bamboo charcoal (BC), copper (Cu), and phase-change material (PCM). The functional composite fabric, which was composed of self-made complex yarns with various twisting degrees and material composition, were created using a rotor twister and ring-spinning technique. The fabric structure was diversified by the feeding modes of weft yarn into a crochet-knitting machine. The twist number of complex yarns was optimized by tensile tenacity, twist contraction, and hairiness, and analysis showed that twisting at 12 twists per inch produced the highest tensile tenacity and appropriate twist contraction and hairiness. Comfort evaluation showed that the elastic composite fabrics with BC weft yarns exhibited higher water-vapor transmission rate and air permeability, reaching 876 g/m 2¨d ay and 73.2 cm 3 /s/cm 2 , respectively. Three structures of composite fabric with various weft yarns had >0.85 ε far-infrared emissivity and 350-420 counts/cm 3 anion amount. The prepared elastic warp-knitted fabrics can provide a comfortable, dry, and breathable environment to the wearer and can thus be applied as health-care textiles in the future.

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Section: Hairiness Of Yarnmentioning

confidence: 99%

Comfort and Functional Properties of Far-Infrared/Anion-Releasing Warp-Knitted Elastic Composite Fabrics Using Bamboo Charcoal, Copper, and Phase Change Materials

Pan

Hsieh

et al. 2016

Applied Sciences

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“…Yarn hairs are directional: most hairs are the protruding fiber tails for ring bobbin yarn 19,20 ; then the protruding fiber tails are converted to protruding fiber heads, 20,21 resulting in severe friction and excessive hair increase during the subsequent winding process. 12,22 In order to suppress the detrimental impact of the hair direction, the hair-wrapping direction should be carefully designed.…”

Section: Modeling Of Hair Wrapping On the Yarn Surfacementioning

confidence: 99%

“…6–9 Surface-contacting spinning wraps protruding hairs onto the yarn surface or into yarn during the yarn rolling on the contact surface. 10,11 During the winding process, yarn hairiness rises sharply due to severe rapid rubbing and pulling 12 ; therefore, a special apparatus is employed to depress excessive hairiness increase by generating vortex airflow, wrapping yarn hairs. 13–15 To avoid pulled sized hairs during the sizing process, a grooved device is used to conduct single yarn sizing, adhering nearly all hairs onto the sized yarn surface.…”

mentioning

confidence: 99%

A study on the impact of hair wrappings on yarn properties – Part I: Theoretical analysis and manual experimental validations

Xia

Wang

et al. 2016

Textile Research Journal

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Hair-wrapping distribution, hair-wrapping direction and yarn moving direction models have been developed to analyze and predict the impact of hair wrappings on yarn properties in theory. Then, Nm 48 ring-spun ramie yarns were respectively treated by various manual hair wrappings, such as the forward diagonal, the forward vertical, the forward random, the backward diagonal, the backward vertical and the backward random. The results showed that the various hair-wrapped yarns had a similar smoothened static surface appearance. Although vertical hair wrappings caused the highest deterioration in yarn unevenness and imperfections, they kept the smallest change of hairiness among all types of hair wrappings during yarn moving. Hair wrapping contributed to large fiber utilization, improving yarn tensile properties, regardless of the worsened yarn unevenness and imperfections. The manual experimental results corresponded well to our modeling suppositions and theoretical analysis.

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“…25,26 The longer hairs often lead to more problems. 27 S 3 , S 4 , S 5 , S 6 , and S 7 were the sum of hairs equal to, or longer than, 3, 4, 5, 6, and 7 mm, respectively. Table 2 shows that most long hairs of single-spun yarn were reduced by conventional ring twisting.…”

Section: Effect Of Different Contact Surfaces On Yarn Hairinessmentioning

confidence: 99%

Improving fiber trapping with a contact surface during the ring twisting of two cotton yarns

Xia

Wang

2012

Textile Research Journal

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In this study, a geometrical model was introduced to improve the hair trapping via a surface contacting the yarn-twisting triangle during ring twisting of two single yarns. The fiber-trapping improvement with the contact surface was analyzed theoretically. Then, single Ne 80 ring cotton yarns were used to produce two-ply yarns under different ring-twisting conditions, namely conventional twisting, dry twisting of yarns with a plane surface, wet twisting of yarns with a plane surface, dry twisting of yarns with a grooved surface, and wet twisting of yarns with a grooved surface. Plied yarn properties, including yarn hairiness, strength, and irregularity, were tested. The Student Newman Keuls (SNK) test and variation analysis were also carried out in the SPSS program to study the effect of different contact surfaces on related yarn properties; the significance level was 0.05 for the SNK test and variation analysis. The hairiness of plied yarns was significantly reduced when twisting with the plane or grooved surface, especially for the wet twisting cases. This corresponds well with our model on improving fiber trapping.

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Effect of repeated winding on carded ring cotton yarn properties

Cited by 10 publications

References 18 publications

Comfort and Functional Properties of Far-Infrared/Anion-Releasing Warp-Knitted Elastic Composite Fabrics Using Bamboo Charcoal, Copper, and Phase Change Materials

Comfort and Functional Properties of Far-Infrared/Anion-Releasing Warp-Knitted Elastic Composite Fabrics Using Bamboo Charcoal, Copper, and Phase Change Materials

A study on the impact of hair wrappings on yarn properties – Part I: Theoretical analysis and manual experimental validations

Improving fiber trapping with a contact surface during the ring twisting of two cotton yarns

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