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Journal articles on the topic 'Filament yarn'
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1
Xia, Zhigang, Cancan Wang, Chiyu Fu, Jiang Wei, and Weilin Xu. "Novel composite siro-spinning with forced migrations of filaments." Textile Research Journal 89, no. 19-20 (January 19, 2019): 3927–36. http://dx.doi.org/10.1177/0040517518824850.
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In this study, a novel composite siro-spinning method with cyclically migrating filaments was developed as a simple and safe way to enhance filament-staple-fiber coherence. The novel composite siro-spinning method was theoretically demonstrated to produce a yarn with migrated filaments clasping both internal and external fibers. It was predicted that migrated filaments of the novel composite sirospun yarn were not straight enough to resist yarn tensile drawing as the filament parallelism with the yarn axis decreased. However, migrated filaments could clasp the staple fibers firmly to enhance filament-staple-fiber coherence, contributing an excellent frictional resistance of the novel composite yarn. Experiments were then conducted to validate the demonstration. Experimental results proved that the novel composite sirospun yarn had cyclic filament immersion and exposure appearance, resulting in medium hairiness and yarn imperfection after comparison with corefil sirospun and siro corefil yarns. The novel composite sirospun yarn with severe filament migrations had poor filament straightness, but filament deformations that were effective in clamping staple fibers. Therefore, the novel composite sirospun yarn had less strength, but greater frictional resistance than corefil sirospun and siro corefil yarns.
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Song, Juan, Xuzhong Su, and Xinjin Liu. "Study on shape retention properties of filament/staple fiber composite yarns and fabrics." International Journal of Clothing Science and Technology 31, no. 6 (November 4, 2019): 790–801. http://dx.doi.org/10.1108/ijcst-12-2018-0164.
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Purpose With the improvement of living standards and acceleration of working pace, the shape retention property of textiles has attracted more attention. Yarn spinning is the first fundamental process in making textiles and apparel, and the properties of yarn influence the performance of textiles directly. Filament/staple fiber composite yarn is a kind of yarn spun by filament and staple fiber, and comprehensive qualities of yarn can be improved. Therefore, the purpose of this paper is to study the shape retention properties of filament/staple fiber composite yarns and corresponding fabrics. Design/methodology/approach Four kinds of composite yarn, core-spun yarn with one 50D SPH filament feeding, sirofil wrapped yarn with one 50D SPH filament feeding from left, sirofil wrapped yarn with one 50D SPH filament feeding from right, sirofil wrapped yarn with two 25D SPH filaments feeding from two sides, were spun. The qualities of spun yarns were measured. Then, corresponding two kinds of twill fabrics were woven by core-spun yarn and sirofil wrapped yarn with two filaments, respectively. The handle parameters, crease recovery, appearance leveling after washing, dimensional change rate after washing, strength and elongation and tensile elasticity were tested by using corresponding test instruments. Findings The tested results of spun yarn qualities show that comparing with the core-spun yarn, the evenness of sirofil wrapped yarn is improved, the hairiness is reduced, and the breaking strength and elongation are increased. Comparing with sirofil wrapped yarn with one filament, the evenness of sirofil wrapped yarn with two filaments is improved. The measured results of fabrics properties show that under the same weaving process, comparing to the fabric woven by core-spun yarn, the dimension of fabric woven by sirofil wrapped yarn is small after desizing, and warp and weft density is large. The possible reason is that the shrinkage of the SPH filament outside the sirofil wrapped yarn happens after desizing, which also makes the dimensional change rate after washing of the corresponding fabric large, and crease recovery poor. Originality/value In the paper, for improving the shape retention properties of the pure cotton woven fabric, one kind of SPH filament was added to the woven fabric by spinning filament/staple fiber composite yarns. Four kinds of composite yarn, core-spun yarn with one 50D SPH filament, sirofil wrapped yarn with one 50D SPH filament feeding from the left side, sirofil wrapped yarn with one 50D SPH filament feeding from the right side, sirofil wrapped yarn with two 25D SPH filaments feeding from two sides, were spun. Two kinds of twill fabrics were weaving by core-spun yarn and sirofil wrapped yarn with two filaments, respectively.
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Xia, Zhigang, Hong Shan Wang, and Wenxiang Ye. "A method to produce ring single yarn with fancy and anti-frictional structure by feeding filaments in front of the front roller nip." Textile Research Journal 90, no. 5-6 (October 1, 2019): 631–40. http://dx.doi.org/10.1177/0040517519877466.
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In this study, a composite ring spinning via feeding filaments in front of the front roller nip method was developed as a novel, effective way to form yarn surface looped fancy wrappings. The novel method was theoretically demonstrated to produce fil-wrap yarn with tight filament wrappings and periodic filament loop decorations on the surface. Tight filament wrappings fasten staple fibers firmly onto the yarn stem to achieve excellent anti-friction, while filament loops decorate the yarn surface to yield a fancy appearance. However, intensive bending of looped and wrapping filaments are likely sheared down to decrease the yarn’s tensile strength. The novel method was combined with corefil spinning to produce a fil-clamp yarn with enhanced structural fastness and strength. Experiments were conducted to validate the approach. Experimental results proved that the novel fil-wrap and fil-clamp yarns had periodic filament looped and tight wrappings, resulting in eliminated hairiness and increased fancy loops after comparison with conventional sirofil and corefil yarns. respectively. The fil-wrap yarn with only surface-bending filament wrappings was weaker, but more friction-resistant than conventional sirofil and corefil yarns. Yarn strength and anti-friction were enhanced after burying straight filaments in the fil-wrap yarn body to form a fil-clamp yarn. The fil-clamp yarn with fancy and anti-frictional structure is expected to endow fabrics with improved fluffiness, softness and anti-frictional properties.
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Akgun, Mine. "Effect of Yarn Filament Fineness on the Surface Roughness of Polyester Woven Fabrics." Journal of Engineered Fibers and Fabrics 10, no. 2 (June 2015): 155892501501000. http://dx.doi.org/10.1177/155892501501000214.
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The effect of weft yarn filament fineness on the surface roughness of fabrics woven from polyester yarns through different fabric constructional properties was investigated. Warp yarn type and count and warp density were the same but weft yarn count, weft yarn filament fineness/numbers, and weft density were different for the fabrics in the experimental sub-groups. An objective assessment for surface roughness measurement of woven fabrics by using a stylus profilometer was made. Experimental results show that yarn filament fineness affected fabric porosity and fabric surface roughness. Fabrics with finer filaments could have a compact structure due to small porosity values between the filaments inside the yarns and between yarns themselves in fabrics. Closeness of yarns in fabric structure decreased differences between high and low peaks on fabric surface, and as a result fabric surface roughness decreased.
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Liu, Xinjin, Xinxin Yan, Xuzhong Su, and Juan Song. "Study on properties of electromagnetic shielding yarns and fabrics." International Journal of Clothing Science and Technology 32, no. 5 (March 19, 2020): 677–90. http://dx.doi.org/10.1108/ijcst-09-2019-0134.
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PurposeWith the popularization of electronic products, the electromagnetic radiation pollution has been the fourth largest pollution after water, air and noise pollution. Therefore, electromagnetic shielding property of textiles is attracting more attention. In this paper, the properties of electromagnetic shielding yarns and fabrics were studied.Design/methodology/approachTen kinds of yarn, stainless steel short fiber and polyester blend yarn with three different blending ratios T/S 90/10, T/S 80/20 and T/S 70/30, stainless steel short fiber, polyester and cotton blend yarn with blending ratio C/T/S 35/35/30, core-spun yarn with one 30 um stainless steel filament C/T28tex/S(30 um), core-spun yarn with two 15 um stainless steel filaments (C/T28tex/S(15 um)/S(15 um)), twin-core-spun yarn with one 30 um stainless steel filament and one 50D spandex filament C/T28tex/S(30 um)/SP(50D), sirofil wrapped yarn with one 30 um stainless steel filament feeding from left S(30 um)+C/T28tex, sirofil wrapped yarn with one 30 um stainless steel filament feeding from right C/T28tex+S(30 um), sirofil wrapped yarn with two 15 um stainless steel filaments feeding from two sides S(15 um)+C/T28tex+ S(15 um), were spun. The qualities of spun yarns were measured. Then, for analyzing the electromagnetic shielding properties of fabrics made of different spun yarns, 20 kinds of fabrics were woven.FindingsThe tested results show that comparing to the T/S 80/20 blend yarn, the resistivity of composite yarns with the same ratio of the stainless steel filament is smaller. The possible reason is that comparing to the stainless steel short fiber, the conductivity of stainless steel filament is better because of the continuous distribution of stainless steel in the filament. Comparing with the core-spun yarn, the conductivity of the sirofil wrapped yarn is a little better. Comparing to the fabric woven by the blend yarn, the electromagnetic shielding of the fabric woven by the composite yarn is better, and comparing to the fabric woven by the core-spun yarn, the electromagnetic shielding of the fabric woven by the sirofil yarn is a little better. The possible reason is that the conduction network can be produced by the stainless steel filament wrapped on the staple fiber yarn surface in the fabric, and the electromagnetic wave can be transmitted in the network.Originality/valueIn this paper, the properties of electromagnetic shielding yarns and fabrics were studied. Ten kinds of yarn, including three stainless steel short fiber and polyester blend yarns, one stainless steel short fiber, polyester and cotton blend yarn, two core-spun yarns, one twin-core-spun yarn, three sirofil wrapped yarn, were spun. Then, for analyzing the electromagnetic shielding properties of fabrics made of different spun yarns, 20 kinds of fabrics were woven. The effects of fabric warp and weft densities, fabric structures, yarn kinds, yarn distributions in the fabric on electromagnetic shielding were analyzed.
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Kang, Bok Choon, K. H. Min, Y. H. Lee, Beong Bok Hwang, and Chathura Nalendra Herath. "Microscopic Evaluation of Commingling-Hybrid Yarns." Materials Science Forum 539-543 (March 2007): 992–96. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.992.
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Fibers made of elements such as carbon, aramid and glass have higher mechanical properties than other conventional textile fibers and they enable the production of light weight composites as end products. Furthermore, commingling hybrid yarns generally have a characteristic feature so that their components are distributed homogeneously enough over the yarn cross section. A normal air texturerising machine was modified to produce commingling hybrid yarns for test samples. Different process parameters were applied to produce the hybridized yarn samples. However, these process parameters turned out to have little effect on the filament distribution over the hybrid yarn cross section in terms of homogeneity. The analysis in this paper is focused on the pattern of mixing of filaments over a cross section of hybrid yarns according to different combinations of reinforcement and matrix filament yarns through microscopic view. The volume content of filament in hybrid yarn cross section was maintained at 50% for both reinforced and matrix, and the hybrid yarns count at 600 tex throughout experiments. It was concluded from the experiments that the diameters of reinforcement and matrix filaments have strong effects on the pattern of mixing of filaments over a cross section of hybrid yarns such that the hybrid yarns with more or less equal diameters of reinforcement and matrix filaments showed considerably even distributions over the hybrid yarn cross section.
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Sarioğlu, Esin, and Osman Babaarslan. "A Study on Physical Properties of Microfilament Composite Yarns." Journal of Engineered Fibers and Fabrics 11, no. 3 (September 2016): 155892501601100. http://dx.doi.org/10.1177/155892501601100310.
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In the textile industry, composite yarns with multifilament cores are used to impart strength. There are various spinning systems to produce composite core-spun yarns. In this study, to determine the effects of filament fineness on yarn characteristics of composite yarns, polyester filaments with medium, fine and micro fiber linear densities were used as the core portion and cotton fiber was used as the sheath material. Yarn samples were manufactured using a modified ring spinning system with four different yarn counts and constant twist factor (ae). The effect of filament linear density on yarn tensile properties, unevenness and imperfections was determined. Yarn evenness and tensile properties were compared with 100% cotton ring spun yarn and to each other. When relative amount of core increases, it was observed that composite yarns had improved tenacity and elongation compared to 100% cotton ring spun yarn. Although filament fineness was found to have a significant effect on the CVm % properties, there was no statistical effect on imperfections other than yarn count parameter.
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Su, Xuzhong, Xuzhong Su, and Xinjin Liu. "Research on performance of twin-core spun yarn and fabric." International Journal of Clothing Science and Technology 32, no. 3 (November 25, 2019): 338–55. http://dx.doi.org/10.1108/ijcst-12-2018-0162.
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Purpose As one kind of filament/staple fiber composite yarn, core spun yarn has been widely used, especially on Jeans. However, there is only one filament in the commonly used core spun yarn, such as spandex, and the performance of the one filament often is influenced during dyeing and finishing. Therefore, in the paper, twin-core spun yarns with two different filaments feeding simultaneously were spun on ring spinning frame modified by one kind of filament feeding numerical control device. The paper aims to discuss these issues. Design/methodology/approach Four kinds of twin-core spun yarns, cotton/spandex/PBT, cotton/spandex/CM800, cotton/spandex/T400, cotton/spandex/SPH with linear density 36.4tex/40D/50D were spun. For improving the covering effect of the two filaments, the filament feeding position, filament pre-drafting multiple, distance between two staple roving, designed twist factor of the core spun yarn were optimized. Findings It is shown that comparing with the core spun yarn, the breaking strength and elongation of the twin-core spun yarns are improved since the addition of another elastic filament, while the evenness is a little worse. Originality/value By using the twin-core spun yarns, corresponding knitted and woven fabrics are produced. Meanwhile, for simulating the dyeing and finishing process, the knitted fabrics were treated during the 150°C high temperature. It is shown that comparing with the fabrics produced by cotton/spandex yarn, addition of another elastic filament can improve the fabric strength and resistant and has positive effect on worsen prevention for high temperature treated fabric elastic recovery, and on change prevention during the dyeing and finishing process for fabric handle properties, and improves the fabric stability.
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Sarıoğlu, Esin, and Osman Babaarslan. "Porosity and air permeability relationship of denim fabrics produced using core-spun yarns with different filament finenesses for filling." Journal of Engineered Fibers and Fabrics 14 (January 2019): 155892501983781. http://dx.doi.org/10.1177/1558925019837810.
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In this article, porosity and air permeability of denim fabric produced from filament core-spun yarns with different filament fineness and yarn linear density were demonstrated. For this purpose, 110 dtex drawn textured polyester filaments with conventional, fine, and micro finenesses were used as core part, and combed cotton fiber was used as sheath part to obtain core-spun yarns with four different yarn linear density on a modified ring spinning system with the same spinning parameters. Besides the production of core-spun yarns, 100% cotton ring-spun yarns were produced as control group at the same conditions for each yarn linear density, as well. To evaluate the effect of filament fineness and yarn linear density on air permeability and total porosity, denim fabrics were obtained by using 24 yarn samples as weft at the same cover factor with four determined weft densities. Results showed that filament fineness and yarn linear density have a significant effect on total porosity and air permeability at a significance level of 0.05. In addition, high correlation (79.4%) between air permeability and total porosity of denim fabric samples was observed at a significance level of 0.01.
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Sarıoğlu, Esin, Osman Babaarslan, and Münevver Ertek Avcı. "Effect of Filament Fineness on Composite Yarn Residual Torque." Autex Research Journal 18, no. 1 (March 1, 2018): 7–12. http://dx.doi.org/10.1515/aut-2016-0036.
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Abstract Yarn residual torque or twist liveliness occurs when the twist is imparted to spin the fibers during yarn formation. It causes yarn snarling, which is an undesirable property and can lead the problems for further processes such as weaving and knitting. It affects the spirality of knitted fabrics and skewness of woven fabrics. Generally, yarn residual torque depends on yarn twist, yarn linear density, and fiber properties used. Composite yarns are widely produced to exploit two yarns with different properties such on optimum way at the same time and these yarns can be produced by wrapping sheath fibers around filament core fiber with a certain twist. In this study, the effect of filament fineness used as core component of composite yarn on residual torque was analyzed. Thus, the false twist textured polyester filament yarns with different filament fineness were used to produce composite yarns with different yarn count. The variance analysis was performed to determine the significance of twist liveliness of filament yarns and yarn count on yarn twist liveliness. Results showed that there is a statistically significant differences at significance level of α=0.05 between filament fineness and yarn residual torque of composite yarns.
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Sriprateep, Keartisak, and Erik LJ Bohez. "CAD/CAE for stress–strain properties of multifilament twisted yarns." Textile Research Journal 87, no. 6 (July 22, 2016): 657–68. http://dx.doi.org/10.1177/0040517516636000.
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A method is presented for modeling the tensile behavior of multifilament twisted yarns. A filament assembly model and a computer-aided design/computer-aided engineering (CAD/CAE) approach are proposed for the tensile analysis. The geometry of the twisted yarn and the nonlinear filament properties were considered. The finite element method (FEM) and large deformation effects were applied for computation of the stress–extension curves. Ideal yarn structures of five layers with different twist angles were simulated to predict the tensile behavior of each filament and each layer. The stress acting on the filaments after yarn extension could be directly analyzed by the FEM. The stress distribution in the filaments showed that the highest stress regions were located at the filament in the center of the yarn and decreased slightly to the yarn surface. The stress–extensions of the filaments were converted to yarn tensile behavior that is shown in terms of the maximum and average stress–extension curves. The results of this prediction model were compared with the stress–strain curves of high-tenacity rayon yarn and the energy method. The maximum stress–extension curves showed very good agreement with experimental results and are more accurate than those obtained by previous methods.
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Gao, Yi Qiang. "Structure and Properties of Double-Filament Tri-Component Combined Yarn." Advanced Materials Research 1035 (October 2014): 101–5. http://dx.doi.org/10.4028/www.scientific.net/amr.1035.101.
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Manufacturing process of combined yarn with different filament size and cotton roving has been discussed. It shows that filament feeding point has some effect on combined yarn structure and yarn properties. If the filaments are fed from different sides of the cotton strand, they usually wrap the strand in parallel. If the filaments are fed from the same side of the strand, they wrap the strand crossed more often. Filament feeding point has an effect on yarn hairiness while it affects yarn breaking strength, yarn breaking elongation and abrasion resistance slightly. Yarn property weight is determined by subjective empowerment and Borda method is used to analyze yarn property. It has proved that if the filaments are fed from different sides of the cotton strand, the filament-roving space is set at 4mm respectively; the combined yarn shows the best.
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Kadoğlu, Hüseyin, Krste Dimitrovski, Arzu Marmaralı, Pınar Çelik, Güldemet Başal Bayraktar, Tuba Bedez Üte, Gözde Ertekin, Andrej Demšar, and Klara Kostanjek. "Investigation of the Characteristics of Elasticised Woven Fabric by Using PBT Filament Yarns." Autex Research Journal 16, no. 2 (June 1, 2016): 109–17. http://dx.doi.org/10.1515/aut-2015-0025.
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Abstract Owing to growing demand for comfortable clothes, elastane filament yarns are being used in fabrics for several garments. In this study, core spun yarns were produced with cotton fibres and PBT/elastane filament yarns (cotton as sheath material, PBT yarn and elastane as core yarns). Twill woven (1/3 Z) fabrics were produced by using core spun yarns (30 tex) and cotton yarns (30 tex) as weft, and 100% cotton yarn (59 tex) as warp yarns. The fabrics consisting of PBT were washed at 100°C for 30 minutes to gain the elasticity. The woven fabrics’ weight, thickness, elongation, permanent elongation, dimensional stability, air permeability, thermal conductivity, thermal absorptivity characteristics were tested and statistically evaluated. According to the results, the fabrics containing PBT and elastane filaments had similar elongation and shrinkage values. PBT filament yarns have a great potential to produce lightweight elastic fabrics.
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Hua, Tao, Ngo S. Wong, and Wai M. Tang. "Study on properties of elastic core-spun yarns containing a mix of spandex and PET/PTT bi-component filament as core." Textile Research Journal 88, no. 9 (March 14, 2017): 1065–76. http://dx.doi.org/10.1177/0040517517693982.
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This paper presents a development of elastic core-spun yarn containing a mix of spandex and polyethylene terephthalate/polytrimethylene terephthalate (PET/PTT) bi-component filament as core to obtain better yarn properties, especially for elastic property. Eight types of core-spun yarns, consisting of different core components with various values of linear density and covered with cotton fibers, were produced using a modified ring-spinning machine with a core spinning attachment. The influences of core components, linear density, and draw ratio of spandex on yarn structure and properties were investigated. The experimental results demonstrate that core-spun yarns containing a mix of spandex and PET/PTT bi-component filament have much lower yarn stress decay as well as lower hairiness and CVm value of evenness compared to the yarns using only spandex. For the yarns containing a mix of spandex and PET/PTT bi-component filament, the yarns containing 70 denier spandex have higher elongation and stress decay compared to the yarns containing 40 denier spandex. The test results show that the elongation of yarns containing a mix of spandex and PET/PTT bi-component filament increases with the increase of the draw ratio of spandex. The stress decay of yarns containing a mix of 70 denier spandex and PET/PTT filament shows a similar trend to the elongation. Moreover, the yarn samples containing a mix of spandex and PET/PTT filament as core exhibit good yarn evenness, with very few thick places and neps, as well as low yarn hairiness.
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Sarioğlu, Esin, and Osman Babaarslan. "A Comparative Strength Analysis of Denim Fabrics Made from Core-Spun Yarns Containing Textured Microfilaments." Journal of Engineered Fibers and Fabrics 12, no. 1 (March 2017): 155892501701200. http://dx.doi.org/10.1177/155892501701200103.
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Denim fabric is one of the most popular casual wear fabrics worldwide. The performance characteristics of denim fabrics have been improved by using functional fibers and elastane to make them comfortable to wear. Elastane fibers with high elasticity are used extensively in denim fabric production. Elastane fibers are generally used as the core part of the core-spun yarns as weft yarns. Besides elastane fibers; polyester and polyester derivatives are commonly used. This study examines the effects of filament fineness and yarn count on denim fabric performance. Textured polyester filaments with medium, fine and micro linear densities were used as the core part of the core-spun yarn and cotton fiber was used as sheath material. Yarn samples manufactured with the same production parameters at different yarn count were used as weft yarns of denim fabrics. Denim fabrics were produced with the same fabric cover factor to eliminate yarn count difference effects. Tensile, static tearing and dynamic tearing properties of denim fabrics were determined. To evaluate the effects of core part, 100 % cotton denim fabric was manufactured and tested. Statistical analysis was performed to analyze the significance of filament fineness and yarn count ratio. Results showed that there was a significant effect of filament fineness on tensile, static tearing and dynamic tearing properties of denim fabrics. In addition, it was found that yarn count had no significance effect on static tearing properties of denim fabrics.
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Li, Xin E. "Study on Thermal Resistance of Basalt Filament Yarn." Advanced Materials Research 146-147 (October 2010): 666–69. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.666.
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Basalt filament yarn is a new type of high-performance fibers, which is formed by the direct drawing of basalt rock at high temperatures. It is a natural and environmentally friendly textile material. This paper mainly focuses on thermal resistance research of basalt filament yarn that is heated at various temperatures. The change of color and appearance of heated basalt filament yarn was described. The mechanical properties of heated basalt filament yarn were tested. The results showed that although the mechanical properties of basalt filament yarn decreased with the temperature rising, still remained high tensile strength within a certain temperature range. Basalt filament yarn possess higher tenacity under 325°C. Basalt filament yarns still possess certain tenacity when they were placed at 500°C condition. So basalt filament yarn can be used as heat-resistant materials, such as filtration materials for high-temperature gas and liquid, fire-proof fabrics and so on.
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Deng, Cheng Liang, Zhao Qun Du, and Wei Dong Yu. "Analysis of Process and Properties of Stainless Steel Filament Wrapped Yarn Based on Multi-Axial Ring Spinning." Advanced Materials Research 332-334 (September 2011): 743–46. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.743.
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A new spinning method was presented to spin three-axial stainless steel filament wrapped yarn by modified ring-spinning, where the stainless steel filament was set as the core yarn and the nylon filament for decoration wrapping the stainless steel filament in the fields of the fabric for Shielding application. A set of process parameters was obtained by the ring spinning frame improvement and spinning process optimization, which realized to spin nylon filament wrapped stainless steel filament yarn. Moreover, the structure, and tensile mechanical properties were measured on the wrapped yarns. The results show that the process can spin stainless steel wire wrapped yarn and acquire the excellent performance of the yarn.
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Demir, A., M. Acar, and G. R. Wray. "Air-Jet Textured Yarns: The Effects of Process and Supply Yarn Parameters on the Properties of Textured Yarns." Textile Research Journal 58, no. 6 (June 1988): 318–28. http://dx.doi.org/10.1177/004051758805800602.
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Characteristics of air-jet textured yarns are determined by the instability, linear density, and strength, together with structural properties such as loop size, loop frequency, and degree of entanglement. Such characteristics are affected by various process parameters and supply yarn properties. The effects of these parameters on the final yarn properties have been investigated using instability, linear density, and strength tests, together with SEM photographs for visual assessment of the yarn structure. Optimizing any given yarn property almost always affects other yarn characteristics, and therefore this must be remembered when selecting suitable process parameters and supply yarns for specific end uses. For a given texturing nozzle and conditions, there is an optimum filament fineness and number of filaments that can be textured effectively.
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Sawhney, A. P. S., G. F. Ruppenicker, L. B. Kimmel, and K. Q. Robert. "Comparison of Filament-Core Spun Yarns Produced by New and Conventional Methods." Textile Research Journal 62, no. 2 (February 1992): 67–73. http://dx.doi.org/10.1177/004051759206200202.
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In recent years, we have been reporting our research on composite yarns of mostly cotton content produced on a modified ring spinning system. Recently, we reported an improved method of producing an all staple-core spun yarn, and we have applied the same method to filament-core spinning, obtaining a yarn of greatly improved quality. The new filament-core yarn has almost total core coverage, does not strip, and is about 10% stronger (probably due to its improved yarn structure) than a conventional filament-core yarn. This paper briefly describes the new and conventional core spinning methods and evaluates nylon filament-core/cotton-wrap yarns produced with them. There is also a comparison of the cover factor, strip resistance, and microscopic cross sections of a few other core yarns (with Kevlar, fiberglass, and polyester cores). A significant improvement in the cover factor of the new yarn suggests that it may be very useful for sewing threads; ropes; twines; cables; special military, industrial, and surgical fabrics; and other textiles in which the high strength, durability, and a 100% cotton surface (for ease of finishing or coating) are important.
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Takatera, Masayuki, Tamotsu Arichi, Julie Peiffer, Chunhong Zhu, and KyoungOk Kim. "Continuous measurement of apparent Poisson’s ratio for yarn based on omni-directional diameters." Textile Research Journal 87, no. 6 (July 20, 2016): 739–46. http://dx.doi.org/10.1177/0040517516639817.
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We proposed a new method for measuring apparent Poisson’s ratio for yarn and developed a new tensile tester equipped with a digital micrometer that can measure the omni-directional diameter of the yarn annularly while the yarn is elongated. Values of apparent Poisson’s ratio were obtained from the longitudinal and transverse strains continuously. The mean diameter measured omni-directionally was used to calculate the transverse strain for each longitudinal strain. We tested five spun yarns, one monofilament yarn and two filament yarns and obtained values of apparent Poisson’s ratio against longitudinal strain for all samples. Apparent Poisson’s ratio was not constant for spun and filament yarns, while it was constant for monofilament yarn. When the longitudinal strain was low, apparent Poisson’s ratios of ring spun yarns and filament yarns were large, owing to the fiber packing density. As the longitudinal strain increased, apparent Poisson’s ratio gradually decreased. Furthermore, we approximated the relationship between apparent Poisson’s ratio and the longitudinal strain using a power function. The apparent Poisson values can be used in the simulation of fabrics.
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Yang, Rui Hua, Wei Mian Wu, Yu Qin Wan, Wei Dong Gao, Hong Bo Wang, Chun Ping Xie, and Shan Yuan Wang. "Effects of Filament Pre-Tension to the Characteristics of Solo-Sirofil Composite Yarn." Applied Mechanics and Materials 117-119 (October 2011): 795–98. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.795.
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Pre-tension of filament is critical to the characteristics of solo-sirofil composite yarn. In this paper, solo-sirofil yarns under filament pre-tension of 5-25cN were produced by modified EJM-128K ring spinning frame. The hairiness, breaking strength, breaking work and yarn evenness were tested under standard test conditions. It’s explored that when the pre-tension of filament is 15cN, perform of solo-sirofil achieve the best level with lower hairiness, higher breaking strength and breaking work, and better yarn evenness.
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ERTEK AVCI, Münevver, Esin SARIOĞLU, and Gizem KARAKAN GÜNAYDIN. "THE TEARING STRENGTH ANALYSIS OFDENIM FABRICS WITH DIFFERENT WEFT YARN TYPE AND WEFT YARN LAYOUT." TEXTEH Proceedings 2019 (November 5, 2019): 125–31. http://dx.doi.org/10.35530/tt.2019.27.
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Denim fabrics which are highly demanded products among the world have high consumption rate in the textile market. Those fabrics may be utilized for different purposes. Durability, elasticity, wearing resistance are the important expected properties from denim fabrics. Tearing resistance of denim fabrics in use is another parameter that should be considered. This study includes the investigation of tearing properties of denim fabrics produced from single core (Polyethylene terephthalate/Polytrimethylene terephthalate (PET/PTT) bicomponent filament and elastane) and dual core (PET/PTT+elastane feeding simultaneously) spun yarns utilized as weft yarns. Denim fabrics with different layout of these weft yarns with uncovered PET/PTT bicomponent filament were produced in order to compare the tearing strength properties in warp and weft wise. Results revealed that highest tearing strength of weft wise was obtained from denim fabrics at 2F:2CY layout where two uncovered PET/PTT bicomponent filament and two PET/PTT bicomponent filament+elastane dual core-spun yarn were used consecutively in the layouts. The lowest tearing strength was found among the denim fabrics at 1F:6CY layout where one uncovered PET/PTT bicomponent filament and six PET/PTT bicomponent filament+elastane dual core-spun yarns were used consecutively in the layouts. According to statistical evaluation; Weft yarn type, weft yarn layout and their interaction in the fabric were found to having significant effects on tearing strength for both warp and weft direction of denim fabric at significance level of 0.05.
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Zhang, Xiao Ying, Bao Zhong Wang, Min Zhang, and Zhi Juan Pan. "Effects of Heat Shrinkage on Structure and Property of Silk/Synthetic Fiber Textured Composite Filaments." Advanced Materials Research 175-176 (January 2011): 280–83. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.280.
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The textured yarn was respectively prepared with pure silk, silk/polyester POY composite filament, silk/polyester FDY composite filament by the self-made processing device. The effects of heat shrinkage of polyester fibers on the structure and properties of the textured filaments were investigated. The results revealed that silk/POY composite filament contained higher heat shrinkage. Synthetic fibers produced crimps with larger amplitude and smaller bandwidth, and the textured filaments presented a larger yarn count, resulting in the notable crimped deformation.
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Xia, Zhigang, Qinsheng Guo, Wenxiang Ye, Jun Chen, Shengli Feng, and Cailing Ding. "Comparative study of fiber trapping by filaments in conventional and diagonal sirofil systems." Textile Research Journal 88, no. 14 (April 7, 2017): 1581–92. http://dx.doi.org/10.1177/0040517517703606.
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In this study, geometrical and theoretical analyses were conducted comparatively for fiber trappings by filaments in the left diagonal, conventional and right diagonal sirofil with right strand and left filament arrangement (denoted as LDS-RS-LF, CS-RS-LF and RDS-RS-LF, respectively)and left diagonal, conventional and right diagonal sirofil with right filament and left strand arrangement (LDS-RF-LS, CS-RF-LS and RDS-RF-LS, respectively). White filaments and blue rovings were used to produce conventional and diagonal sirofil yarns to validate the analysis. Online and offline fiber trapping capacity comparisons indicated that CS-RS-LF and CS-RF-LS had higher capacities of trapping fibers than LDS-RS-LF and RDS-RF-LS, respectively, and lower capacities than RDS-RS-LF and LDS-RF-LS, respectively. Yarn appearance and tensile properties results revealed that diagonal sirofils with improved fiber trappings increased yarn hairiness and tensile properties, while the ones with deteriorated fiber trappings decreased yarn hairiness and tensile properties. Sirofil yarn unevenness CVm decreased as the fiber trapping enhanced by RDS-RS-LF and LDS-RF-LS and increased as the fiber trapping weakened by LDS-RS -LF and RDS-RF-LS. This corresponded well to our theoretical hypotheses on fiber trappings by filaments in conventional and diagonal sirofil systems.
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Hall, Walter R., and Warren F. Knoff. "Heat Aged Tensile Strength Retention of Poly (p-phenylene terephthalamide) Sewing Thread." Journal of Engineered Fibers and Fabrics 3, no. 4 (December 2008): 155892500800300. http://dx.doi.org/10.1177/155892500800300403.
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The strength retention after exposure to elevated temperature in air of continuous filament and staple spun PPTA sewing thread and the precursor yarns was determined. For both types, the process of converting the greige yarn to thread reduced the amount of strength retained after thermal exposure. The continuous filament products retained more strength than the staple products. The data was fitted to a kinetic rate model in which two strength loss processes occurred. The first process occurred within about the first 5 minutes of thermal exposure and is hypothesized to be hydrolytic degradation. The estimated secondary degradation process activation energy suggests this to be thermo-oxidative degradation. Optical microscopy of filaments indicates a higher level of kink banding and other damage in continuous filament versus staple products and in finished thread versus the precursor yarns. The kink bands and damage are believed to be caused by the staple manufacturing process and the downstream processing of precursor yarn to finished sewing thread. The kink bands and damage are hypothesized to be responsible for the differences in strength retention.
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Du, Mei, and Li Bin Lv. "Study on Structure and Property of Polyester/Cotton/Silk Three-Component Sirofil Spun Composite Yarn." Advanced Materials Research 175-176 (January 2011): 524–28. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.524.
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In this paper, by comparing the properties of polyester/cotton/silk three-component Sirofil composite yarn and traditional cotton yarn, polyester/cotton core-spun yarn, silk/cotton two-component Sirofil composite yarn, the structural characteristics of three-component Sirofil composite yarn and the relationship between its structure and property were explored. There was the inhibition effect of cotton fiber on polyester filament, so the frictional and cohesive force between cotton fiber and polyester filament could be enhanced. The tenacity of polyester filament and cotton fiber were very good and the wrapping effect of raw silk could enhance the cohesive force between cotton fibers, cotton fiber and polyester filament. Therefore, the strength of composite yarn was obviously increased and the abrasive resistance and anti-stripping wool property were also greatly enhanced. Secondly, hairiness between raw silk and fiber strand was very easily captured by raw silk and there was the wrapping effect of raw silk on fiber strand in the composite spinning, so some hairiness was covered by raw silk, which could decrease the length of hairiness or eliminate hairiness. Furthermore, much more uniform raw silk and polyester filaments were added, which could increase the yarn evenness of Sirofil composite yarn.
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Chudoba, Rostislav, Miroslav Vořechovský, and Rostislav Rypl. "Identification of the effective bundle length in a multifilament yarn from the size effect response." Journal of Composite Materials 45, no. 25 (October 6, 2011): 2659–67. http://dx.doi.org/10.1177/0021998311401068.
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The article proposes a method for characterizing the in situ interaction between filaments in a multifilament yarn. The stress transfer between neighboring filaments causes the reactivation of a broken filament at some distance from the break. The utilized statistical bundle models predict a change in the slope of the mean size effect curve once the specimen length becomes longer than the stress transfer length. This fact can be exploited in order to determine the stress transfer length indirectly using the yarn tensile test with appropriately chosen test lengths. The identification procedure is demonstrated using two test series of tensile tests with AR-glass and carbon yarns.
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MUSADDAQ, AZEEM, HES LUBOS, WIENER JAKUB, NOMAN MUHAMMAD TAYYAB, ALI AZAM, and MANSOOR TARIQ. "Comfort properties of nano-filament polyester fabrics: thermo-physiological evaluation." Industria Textila 69, no. 04 (September 1, 2018): 315–21. http://dx.doi.org/10.35530/it.069.04.1529.
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Comfort along with the aesthetic properties of textile clothing in activewear and sportswear are utmost worthwhile for costumer demand as latest trends. Different types of fibers and yarns are being used to improve the moisture management and comfort of the fabric for next to skin. Nowadays, multifilaments or nano-filaments of polyester with diameters in the range of a few nanometers and lengths up to kilometers are used in different range of important technological applications such as functional fabrics, biomedicine, composite, etc. Multifilament polyester yarns are made by aggregating many continuous filaments together characterized by their high tenacity and large surface area per unit mass. The nano-filament yarn has also significant effects on thermal comfort properties as a nano-filament fabric has less thermal conductivity than cotton fabric, but equal to multichannel polyester fabric while nano-filament fabrics gave the cool feelings with higher thermal absorptivity. Moreover,coolmax fabric showed the higher value of thermal resistance as compared to nano-filament fabrics. Nano-filament fabrics exhibited higher value of watervaporpermeability than cotton fabric.
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Kocaman, Recep Türkay, Dilbar Aibibu, and Chokri Cherif. "New Image Analysis Method for Determination of the Inter-Fibre Pore Size Intensity of Polyester Woven Barrier Fabrics." Fibres and Textiles in Eastern Europe 26, no. 4(130) (August 31, 2018): 67–74. http://dx.doi.org/10.5604/01.3001.0012.1315.
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Porosity is an important characteristic of a filter textile, which affects permeability and retention properties. Determination of the inter-yarn and inter-fibre pore sizes of barrier textiles is also required to assess the filter behaviour of these textiles. In this study, a software tool was developed to detect the inter-fibre pore size distribution and pore size intensity of multifilament woven barrier fabrics using cross-section images. Fabrics were chosen according to their fabric construction parameters, such as the fabric index, weft yarn filament fineness and weft yarn structure (flat or textured). Microscopic cross-section images of weft yarns were taken, processed to binary images, and analysed with respect to the pore size distribution, number of pore lengths and pore intensity. It was also analysed how the fabric index, filament cross-section and filament fineness affect the inter-fibre pore lengths and separation level proposed. It was found that weft yarns with wider lengths and lower height showed wider inter-fibre pores. Inter-fibre pores decreased with a decrease in filament fineness. Moreover the separation level proposed deviated from the 90% level depending on the fabric index. This deviation was very small in samples with reduced filament fineness and textured samples. The separation level proposed will be useful to understand the effect of fabric construction parameters to obtain targeted properties regarding inter-fibre and inter-yarn pore size.
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Herath, Chathura Nalendra, Bok Choon Kang, Jong Kwang Park, Yong Hwang Roh, and Beong Bok Hwang. "Breaking Elongation Properties of Hybrid Yarns by Commingling Process." Materials Science Forum 532-533 (December 2006): 337–40. http://dx.doi.org/10.4028/www.scientific.net/msf.532-533.337.
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This paper is concerned the breaking elongation properties of Carbon/Aramid-, Carbon/Glass- and Aramid/Glass- matrix hybridized commingling yarns. The hybrid yarns produced by commingling process were investigated in terms of breaking elongation property. In experiments, carbon (CF), aramid (AF), and glass (GF) filament yarns were combined. In this study, selected matrix materials include Polyether-ether-Keeton (PEEK), and polyester (PES), or polypropylene (PP). The volume content of filament in hybrid yarn cross section was maintained at 50% for both reinforced and matrix, ant hybrid yarns count at 600 tex, respectively. The reinforcement to matrix filament combination was selected as 1:1 proportion. The effect of different air pressures and material combinations was investigated in terms of breaking elongation. In experiments, each type of hybrid yarn sample has been tested 20 times at the testing speed of 10mm/min. under 3 bar of yarn clamping pressure. Since breaking elongation is one of most important properties in textile fiber, it was examined closely with reference to the first breaking point of commingling-hybrid yarns. It was concluded from experiments that hybrid yarns with higher breaking elongation and higher tensile strength tend to show better force-elongation relationship. It was also known from experiments that the combination of two reinforcement filament yarns gives always much better results than a single reinforcement filament yarns in terms of elongation property. GF/AF/matrix is shown very much better elongation properties. PP and PES gives higher elongation than PEEK as a matrix material.
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Ravandi, Seyed Abdolkarim Hosseini, Razieh Hashemi Sanatgar, and Farzad Dabirian. "Wicking Phenomenon in Nanofiber-Coated Filament Yarns." Journal of Engineered Fibers and Fabrics 8, no. 3 (September 2013): 155892501300800. http://dx.doi.org/10.1177/155892501300800302.
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Wicking phenomenon has been investigated in filaments and spun yarns in different studies. In comparison with conventional structures, nanofibrous structures have unique characteristics such as higher surface-to-volume ratios, smaller pores, and higher porosity. For many nanofiber applications, a good understanding of the liquid absorption and wettability of nanofibrous is crucial. In this article, a modified electrospinning process for yarn coating with nanofiber is presented. In this method, fiber direction was controlled by manipulating the conventional system of electrospining and embedded nanofibers on yarn surface. Nylon66 filament was coated with nylon 66 nanofiber. The coating morphology and capillary phenomenon were examined in different concentrations of polymer solution. The kinetics of capillary flow of colored liquid in coated yarns with nanofiber follows the Lucas-Washburn equation. Results show that coating with nanofibers increases equilibrium wicking height. In a nanofiber coating process, with a constant feeding rate, increasing the solution concentration increases the capillary rise rate.
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Liu, Sai, Xingxing Pan, Dongming Zheng, Zhaoqun Du, Gui Liu, and Shu Yang. "Study on the structure formation and heat treatment of helical auxetic complex yarn." Textile Research Journal 89, no. 6 (March 12, 2018): 1003–12. http://dx.doi.org/10.1177/0040517518760754.
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Currently, auxetic yarns consisting of a core filament and a wrap filament are generally utilized as complex materials, which are attributed to residual torque. Thus, the main content dealt with in this paper was to analyze the structure formation and effect of heat treatment of helical auxetic complex yarn spun by a modified ring-spinning system. Firstly, an orthogonal experiment with three factors and three levels was carried out to study the effects of diameter ratio, yarn twists and initial helical angle on the structure and Poisson’s ratio of complex yarn. Secondly, a heat treatment process with polyamide filament with low melting point (80℃) was conducted to improve the structural stability of auxetic complex yarn. It was found that the heat treatment process can not only improve the structural stability of complex yarn, but also promote the expansion effect. By comparing experimental and theoretical results, it was found that the variation of Poisson’s ratio with axial strain had good consistency. Therefore, the heat treatment method can effectively solve the slippage problem of helical auxetic complex yarn.
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Younes, Ayham, Vignaesh Sankaran, André Seidel, Martin Waldmann, Chokri Cherif, and Jan Hausding. "Stress-strain behavior of carbon filament yarns under high strain rates." Textile Research Journal 82, no. 7 (February 13, 2012): 685–99. http://dx.doi.org/10.1177/0040517511433151.
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Fiber-reinforced composites used in numerous technical applications have to meet the ever increasing safety requirements. Resistance to extreme stress under high velocity impact loads assumes even greater significance. Previous studies on the behavior of fiber-reinforced composites under impact loads provide little insight about the properties of filament yarns, a basis for many composite applications. Hence this paper focuses on the development of a suitable test method for performing high speed tensile tests on all filament yarn types, and the acquisition and analysis of the test results. This will enable the derivation of material models for their usage in the field of composites applications. Initially, the widely used carbon fiber filament yarns have been tested. The conclusive test results with a reduced yarn clamp mass and high stiffness of the test apparatus indicate that tensile strength and modulus of elasticity of carbon filament yarns increase with higher strain rates.
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Liu, Jun Mei. "Influence of Fabric Structure on Shielding Effectiveness of Anti-Electromagnetic Radiation Fabric." Advanced Materials Research 1028 (September 2014): 25–29. http://dx.doi.org/10.4028/www.scientific.net/amr.1028.25.
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In this paper, the standard test method of fabric shielding effectiveness was simply introduced in order to understand systematically the influence of fabric structure of stainless steel fiber on the shielding effectiveness. The different fabrics were woven using of stainless steel monofilament cotton yarn, stainless steel multifilament cotton yarn and stainless steel fiber cotton yarn. Then shielding effectiveness of these fabrics was measured. Results show that spacing between the stainless steel filaments has a great influence on the shielding effectiveness. The shielding effectiveness of fabric will reduce in a certain range when distance of stainless steel filaments is lengthened. Then shielding effectiveness of blended fabric will increase with increasing of the content of stainless steel fiber. The shielding effectiveness of duplex stainless steel filament fabrics is much better than unidirectional stainless steel filament fabric. Under the same testing condition the shielding effectiveness is different between stainless steel monofilament blended fabric and stainless steel multifilament blended fabric. The structure of stainless steel blended yarn has a great effect on shielding effectiveness of shielding fabric, the shielding effectiveness of stainless steel fiber blended fabric is better than the stainless steel filament blended fabric because the content of stainless steel fiber is difference between two kinds of yarn structure.
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Johnson, R. H. "2. Filament Yarn Processing." Textile Progress 30, no. 1-2 (March 2000): 13–21. http://dx.doi.org/10.1080/00405160008688881.
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Bakhshpour, Ramin, Saeed Ajeli, Hossein Hasani, and Ali Asghar Asgharyan Jeddi. "Geometrical Arrangement in the Needle Loop of Multifilament Yarn using Genetic Algorithm." Journal of Engineered Fibers and Fabrics 9, no. 4 (December 2014): 155892501400900. http://dx.doi.org/10.1177/155892501400900417.
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In this paper, the loop structure of plain knitted fabrics, constructed from multifilament yarns is geometrically modeled. This model is based on post-buckling behavior of multifilament yarns composed of two, three or seven filaments by assuming that their cross-section is circular. In the first step of modeling, 2-D post buckled shape of each filament within the yarn structure was investigated regarding the classic theory of Elastica. In this step, volumetric intersections between the filaments occurred. In the second step, the arrangement of the filaments in 3-D space after applying an out-plane bending force, was predicted. Genetic Algorithm was used to find the minimum bending force and reduced the volumetric intersections between the yarn's constitutive filaments using the Genetic Algorithm method, constant forces between the filaments is replaced with a concentrated out-plane force which results in reducing the problems of complexity and optimization. The geometry position of yarn filaments is also modeled using finite element method. Comparison of results indicated a small difference between the two models and confirms that the analytical proposed model is acceptable.
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Xia, Zhigang, Jiandong Tang, and Wenxiang Ye. "A novel concept to produce periodic varied structural composite yarn via cyclical changing of the spacing between filaments and the strand." Textile Research Journal 89, no. 15 (October 10, 2018): 2998–3006. http://dx.doi.org/10.1177/0040517518805384.
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In this study, a novel concept has been developed as a cyclical spacing-change method to produce periodic varied structural composite yarn. Geometrical analysis indicated that the cyclical change of spacing between filaments and the strand altered the yarn formation zone shapes from corefil to sirofil, causing cyclic yarn structure variations from the hairy core–sheath (corefil section) to the smooth spiral filament wrapping (sirofil section). A mechanical analysis revealed the corefil section with more twists was thinner than the sirofil section with fewer twists. Specifically, the cross-sectional diameter performed gradual periodic changes from the thick sirofil section to the thin corefil section. Then, an eccentric godet wheel device was used to conduct confirmatory experiments. Besides validating the theoretical analysis, the experimental results also showed that the novel concept yarn had the minimum hairiness and medium irregularity and strength after comparisons with sirofil and corefil yarns.
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Abbasi, Marjan, Mohammad Reza Mohades Mojtahedi, and Richard Kotek. "Experimental study on texturability of filament yarns produced from recycled PET." Textile Research Journal 90, no. 23-24 (May 28, 2020): 2703–13. http://dx.doi.org/10.1177/0040517520925859.
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In the present work, the texturability of filament yarns produced from recycled bottle grade polyethylene terephthalate (R-PET) and new fiber grade PET (FG-PET) were investigated and compared experimentally. Yarn spun on a spin-draw spinning machine was draw-textured. Elongation at break in each fiber was set to reach 30 ± 5% in the texturing machine. The effect of the draw-texturing conditions on thermomechanical, structural, and crimp properties were examined. Draw-texturing behaviors of the fibers were analyzed using differential scanning calorimetry and measurements of intrinsic viscosity, mechanical and crimp properties, density, and X-ray diffraction. The results indicate that crystallinity of the textured yarn from R- PET and FG-PET has increased compared to the semi-drawn yarns. Further, the lateral dimensions of the R-PET crystals are relatively well developed. Crimp properties show nearly similar response for two polymer yarns for the texturing process. It was found that R-PET can be the premier feed supply for the draw-texturing process and that filaments with appropriate confidence could be obtained from the R-PET.
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Matsumoto, Y., K. Toriumi, I. Tsuchiya, and K. Harakawa. "Properties of Double-Core Twin Spun Silk Yarns and Fabrics." Textile Research Journal 62, no. 12 (December 1992): 710–14. http://dx.doi.org/10.1177/004051759206201203.
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This paper is concerned with the method of producing a novel silk/cotton composite yarn with improved tensile properties. This “double-core” twin spun yarn is made by inserting raw silk continuous filament core yarns in both spun silk and cotton strands. The tensile and compression properties of a few other yarns with different structures and the crease recovery properties of the fabrics are discussed.
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Huang, Yan, Jia Ye Zhong, Jia Chen, Li Li Yang, Xian Chen, and Hong Lei Yi. "Study on the Novel Spinning Technology of Broken Silk Fancy Yarn." Advanced Materials Research 605-607 (December 2012): 415–19. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.415.
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Broken silk thread is one of the numerous fancy yarns, and has been used in development of yarn-dyed textiles. However, the processing technology of traditional broken silk thread is very complex, and has restricted its wide application in the development of new textile products. Therefore, the aim of this paper is to develop a novel spinning technology of broken silk fancy yarn. Some examples of broken silk thread, which spun silk or cotton yarn is used as core yarn and binding yarn, polyester filament is as used as effect yarn, are spun on the ring fancy yarn twisting machine, and physical properties of these fancy yarns are tested and analyzed. The better technical program about choice of fiber material on the fancy component yarn and technological processes is put forward, and some tips on the operation are also given.
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Liu, Keshuai, Yi Zhou, and Weilin Xu. "Numerical analysis of the tension and twist of staple strands in embeddable and locatable spinning." Textile Research Journal 89, no. 8 (May 25, 2018): 1582–92. http://dx.doi.org/10.1177/0040517518773378.
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This study reports a numerical analysis on embeddable and locatable spinning systems. The finite element method is used to quantify the relationship between the tension and twist of staple strands and the spinning parameters. The model was constructed using the three-dimensional beam element, which is capable of simulating the stretching, bending and torsion behavior of the filament and the staple strand. It was found that the staple strand shares far less load (around 13.8%) than the filament during the spinning process. The twist is mainly distributed on the composite yarns and less on other zones. The pretension of the filament, the filament–strand distance ratio, the twist of the composite yarn and the material fed-in velocity were investigated for their influence on the tension and twist of the staple strand. Numerical predictions showed that higher filament tension and filament–strand ratio lead to less load and more twist on the staple strand. This is beneficial in producing stronger and smoother yarns and avoiding end breakages. It was also determined that strand tension and twist increase with an increase in composite yarn twist and a decrease in material fed-in velocity.
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Park, Tae Young, and Seung Goo Lee. "Properties of hybrid yarn made of paper yarn and filament yarn." Fibers and Polymers 18, no. 6 (June 2017): 1208–14. http://dx.doi.org/10.1007/s12221-017-1052-6.
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Huang, XX, XM Tao, ZH Zhang, and P. Chen. "Properties and performances of fabrics made from bio-based and degradable polylactide acid/poly (hydroxybutyrate- co-hydroxyvalerate) (PLA/PHBV) filament yarns." Textile Research Journal 87, no. 20 (October 13, 2016): 2464–74. http://dx.doi.org/10.1177/0040517516671128.
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This paper reports a comparative experimental study of single jersey knitted fabrics made from a novel bio-based and degradable polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) multi-filament yarn, together with polylactide acid , Cupro, polyethylene terephthalate (PET) and polyamide 6 (PA 6) multi-filament yarns. Their structures, mechanical, thermal and surface properties and performances as well as anti-bacterial behavior are measured and compared. It has been found that the polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) filament yarn has adequate thermal and mechanical properties for normal textile and coloration/finishing processes. The Young's modulus of polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) multi-filament yarn is the lowest among all the candidates investigated except for polyamide 6 (PA 6). The dyed polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) fabric has the highest softness rating among all the fabrics. Single jersey knitted fabrics from the polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) filament yarn have a bursting strength, extension and recovery that satisfy the industrial requirement. In addition, after fully relaxation, the dyed polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) knitted fabrics exhibit an outstanding pilling resistance, favorable snagging property, as well as good air permeability, Qmax and smoother surface. Finally, this study has led to a discovery of excellent anti-bacterial performance of 100% polylactide acid/poly (hydroxybutyrate-co-hydroxyvalerate) (PLA/PHBV) fabrics against staphylococcus aureus, klebsiella pneumoniae, candida albicans according to AATCC100-2012.
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Rogina-Car, Beti, Zenun Skenderi, and Zlatko Vrljičak. "Thermal resistance of viscose socks." Koža & obuća 68, no. 3 (2019): 18–21. http://dx.doi.org/10.34187/ko.68.3.6.
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Men's viscose socks size 42 were designed and manufactured on an automatic sock knitting machine with a cylinder diameter of 95 mm (3 ¾ inches) which knits with 108 needles. Socks were manufactured of 20 tex viscose yarn, 156 and 220 dtex filament PA 6.6 yarn and 25 tex cotton yarn in multiple plated single jersey structure. The sock cuff contained an interlaced elastane yarn. Sock weight and sock thickness were determined, the height of the sock leg, the length of the sock foot and half of the leg circumference and half of the foot circumference were measured. Thermo physiological sock properties were determined by measuring thermal resistance on a thermal foot manikin. The sock structure under the same knitting conditions depends on the number of yarns, yarn type, the type of raw material (viscose, cotton, PA) and yarn count. Finer yarns provide higher stretchability in the part of the sock leg in the wale direction. The viscose socks with an added coarser cotton yarn and a coarser PA 6.6 yarn had the highest thermal resistance, while the viscose yarns with only an added PA 6.6 yarn had the lowest thermal resistance.
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Hong Hu and Qing He. "Knitting of basalt filament yarn." Textile Research Journal 81, no. 7 (October 21, 2010): 690–97. http://dx.doi.org/10.1177/0040517510383615.
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Louis, Gain L., and Harold L. Salaun. ""X" Direction Filament-Wrapped Yarn." Textile Research Journal 56, no. 3 (March 1986): 161–63. http://dx.doi.org/10.1177/004051758605600302.
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Akgun, Mine, Behcet Becerir, and Halil Rifat Alpay. "Effect of Fabric Layers on the Relationship between Fabric Constructional Parameters and Percentage Reflectance Values of Polyester Fabrics." Journal of Textiles 2014 (October 16, 2014): 1–13. http://dx.doi.org/10.1155/2014/267530.
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This paper focused on the assessment of the relation between constructional properties and percentage reflectance values of fabrics woven from polyester yarns through fabric layer numbers. Reflectance measurements were conducted on pretreated but undyed fabric samples at five different fabric layers. Twelve polyester fabrics having different constructional parameters were used and fabrics differed from each other by their weft yarn densities, weave patterns, and weft yarn filament fineness. Warp yarn properties (type, count, and density) were the same at all the fabrics. Percentage reflectance values of the fabrics changed according to yarn density, weave pattern, and filament fineness in accordance with fabric layer numbers during reflectance measurement. Percentage reflectance values gradually increased as fabric layer numbers increased. The highest reflectance values were obtained at 16 layers of fabric. The effects of single constructional parameters on reflectance values disappeared as fabric layer numbers increased. Percentage reflectance values were analyzed according to ANOVA (Analysis of Variance) and statistical results revealed the cross relations obtained. Light-trap phenomenon was discussed according to reflectance characteristics of woven fabrics.
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Krishnasamy, Jagatheesan, Alagirusamy Ramasamy, Apurba Das, and Ananjan Basu. "Electromagnetic absorption behaviour of carbon helical/coiled yarn woven and knitted fabrics and their composites." Journal of Thermoplastic Composite Materials 32, no. 3 (February 21, 2018): 357–82. http://dx.doi.org/10.1177/0892705718759389.
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In this study, a novel carbon helical/coiled yarn was prepared for developing an electromagnetic (EM) absorbing structure in C-band region (4–8 GHz). The carbon helical yarn was fabricated in a direct twisting machine in which a stainless steel (SS) filament was used as the core and carbon yarn was used as the wrapping thread. The woven and plain knit structures were prepared using the carbon helical yarns. Subsequently, composites were prepared by film stacking method by sandwiching a helical yarn fabric between the polypropylene films. The shielding behaviour of fabrics and the composites was tested using the waveguide method. It was observed that 1/1 plain knit fabric having an optimum number of core SS filaments and helical yarn density of 50–150 turns/m showed a higher absorption coefficient of 0.91 than other fabrics. Hence, a particular proportion of helical carbon and SS content in a fabric maximizes its absorption coefficient. In the composite form, the absorption level was reduced and behaved like a metal. In addition, increase in fineness of core SS filaments also decreased the absorption behaviour of fabrics and composites. However, the overall shielding effectiveness of fabric and composite was increased for increasing the wrapping density. Compared to fabric form, composites showed larger reflective and total loss. In addition, three-point flexural strength and impact energy absorption of helical yarn composites were also investigated. The developed fabrics can be used as EM absorbing structures in domestic and military applications, whereas the composite can be used as shielding panels to the replacement of metal shield.
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Xue, Yuan, and En Long Yang. "Spinning Process and Mechanical Properties Analysis of PTT Filament Core Spun Yarn." Advanced Materials Research 239-242 (May 2011): 1207–10. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.1207.
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The two component filament/staple fiber core-spun yarn is spun on FA506 ring spinning frame with PTT filament as interlaced yarn and Tencel staple fiber as outer sheath. The spinning process and process parameters were analyzed. The morphology, mechanical property and wear-resisting property of two component core-spun yarn were tested. Results indicate that elastic recovery rate of core-spun is up to 90.6%; broken strength is up to 20 cN/tex after boiling water treatment. The core-spun yarn can be used as a new kind of knitting yarn for sweater.
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Lin, Jia Horng, Ting An Lin, An Pang Chen, and Ching Wen Lou. "Electromagnetic Shielding Effectiveness of Physical Property PET/Stainless Steel Composite Fabrics." Advanced Materials Research 910 (March 2014): 210–13. http://dx.doi.org/10.4028/www.scientific.net/amr.910.210.
Full textAbstract:
The electronic appliance is capable of emitting electromagnetic waves that will cause the damage of electrical equipment and influence peoples health. In this study, stain steel filament (SS filament) and 75D PET filament were used to manufacture SS/PET composite yarn The SS/PET composite yarn were made by the wrapping machine, which the core yarn is stain steel filament, wrapped yarn is 75D PET filament and the wrapping layers is varied as one and two. After that, the composite yarn is fabricated by the automatic sampling loom into composite woven fabrics. The composite SS/PET woven fabrics were under the tests of electromagnetic shielding effectiveness (EMSE) and air permeability. The test results revealed that the EMSE of the one-layer composite woven fabric is 9.5 dB at 900 MHz, but the EMSE decreases as test frequency increases. When laminating layer added to three layers, the EMSE raise up to 12.6 dB. The EMSE of composite woven fabric reached at 29.9 when the laminated angle is 45°. And the air permeability decreases as the laminate layer increases, which the thickness of sample affect air to pass through the sample.