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Journal articles on the topic 'Yarn hairiness'
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1
Zhang, Xi Chang, Yu Heng Su, Guang Song Yan, and Long Di Cheng. "Stochastic Simulation of Hairiness with Compact Spinning Yarn." Advanced Materials Research 332-334 (September 2011): 989–94. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.989.
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Reducing yarn hairiness is the greatest ascendancy for compact spinning. Based on the test of fiber length distribution, the hairiness of compact yarn is simulated in order to study the rule of hairiness producing. The hairiness of different fineness yarn is simulated by changing the twist factory and the diameter of yarn and the hairiness of different kinds of yarns such as compact yarn and ring spinning yarn are simulated by changing the transition probability of fiber. The simulation data are in accordance with the experimental data. It can make prediction about yarn hairiness according to the fiber length distribution in order to guide production.
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Su, Xu Zhong, Wei Dong Gao, Ting Ting Wu, Xin Jin Liu, and Yun Zhang. "Reducing Yarn Hairiness in a Modified Ring Spinning Yarn Path by Various Offsets." Advanced Materials Research 331 (September 2011): 493–97. http://dx.doi.org/10.4028/www.scientific.net/amr.331.493.
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Spinning triangle is a critical region in the spinning process of yarn. Its geometry influences the distribution of fiber tension in the spinning triangle and the properties of spun yarns, such as the yarn breakage and hairiness. In this paper, the relationships between the spinning angle and yarn properties especially the yarn hairiness were investigated under various horizontal offsets. The properties of spun yarns produced by the modified system were evaluated and analyzed. Both left diagonal and right diagonal yarn arrangements were examined. The results indicate that the right diagonal yarn path leads to reduce yarn hairiness but the left diagonal yarn path leads to increase yarn hairiness; the breaking force of yarn changes little; yarn evenness deteriorates slightly with the changes of offset.
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Yu, Xue Zhi, and Peng Zi Sun. "Effect of Carding Plate Gauge under the Licker-in of Carding Machine on Polyester Yarn Hairiness." Advanced Materials Research 937 (May 2014): 400–403. http://dx.doi.org/10.4028/www.scientific.net/amr.937.400.
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Effect of different gauge of pin carding plate and saw-tooth carding plate respectively installed under the licker-in of carding machine on polyester yarn hairiness was studied. The hairiness of polyester yarns produced in the condition of installing pin carding plate and saw-tooth carding plate under the licker-in at four different gauges were tested by YG172 yarn hairiness tester. The results show that the two kinds of carding plate at the gauge of 0.7mm are most beneficial to reducing the number of polyester yarn hairiness. When the pin carding plate gauge is 1.0mm and the saw-tooth carding plate gauge is 0.3mm, the number of polyester yarn hairiness is the most. As a whole, installing saw-tooth carding plate under the licker-in is more favorable for reducing the number of polyester yarn hairiness.
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Li, Peiying, Mingrui Guo, Fengxin Sun, and Weidong Gao. "Reducing yarn hairiness in ring spinning by an agent-aided system." Textile Research Journal 89, no. 21-22 (March 13, 2019): 4438–51. http://dx.doi.org/10.1177/0040517519835769.
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An agent-aided system (AAS) for improving comprehensive properties of ring spun yarns with the aid of viscosity and surface tension of the agent is reported in this paper. The mechanism of the humidification and friction process of the AAS was investigated, and related experiments were also carried out to verify the mechanism of analysis. The results confirm that the AAS can attach the fiber ends protruding out of a yarn body on the yarn surface and assist in twisting the fiber ends back into the interior of the yarn body, resulting in a significant reduction of the modified ring spun yarn hairiness. Moreover, the yarn hairiness is prominently reduced after the winding process. The experimental results also show that a speed ratio of 1.3 between the rotating speed of the cylinder and the output speed of the yarn leads to the greatest extent of harmful hairiness reduction (34%), which also corresponds to optimal modified yarn tenacity. Meanwhile, the modified ring spun yarns show a tight and smooth appearance, and the yarn evenness has no deterioration. In addition, the AAS is applicable to both cotton and viscose yarns with different yarn counts. Therefore, the AAS can potentially be used to reduce yarn hairiness for ring spun yarns and enhance the quality of ring spun yarns in the textile industry.
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Xia, Zhigang, Xin Liu, KeZuo Wang, Bo Deng, and Weilin Xu. "A novel analysis of spun yarn hairiness inside limited two-dimensional space." Textile Research Journal 89, no. 21-22 (April 10, 2019): 4710–16. http://dx.doi.org/10.1177/0040517519841368.
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Surface hairiness of spun yarns is critical to the yarn post-processing deficiency and resultant fabric quality. Several test methods are available for measuring yarn hairiness but they cannot detect the accurate hair amount and precise hair length. This paper provides a novel method to perform accurate hairiness tests on the spun yarn. A new test apparatus was devised by installing a blowing pipe outside of the hairiness testing area comprising a projection receiver and a corresponding laser. The rectangle end plane of the blowing pipe air inlet is vertical to the laser plane and tangent to the edge line of the projection receiver surface. Pressure generated through this inlet stretches yarn wild hairiness straightly in one direction, and fully maps accurate hairiness amount and length configuration on the projection receiver surface. The subsequent measurement showed that this novel test apparatus detected more hairiness with improved accuracy in both number and length of hairiness. Approximately real gravimetric hairiness weight can be obtained by this method which is impracticable for other conventional photoelectric apparatus.
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Mirzaei, Majid, Ali Akbar Gharehaghaji, and Mohammad Zarrebini. "A new method of yarn hairiness reduction by air suction during carding." Textile Research Journal 82, no. 20 (July 26, 2012): 2128–36. http://dx.doi.org/10.1177/0040517512447586.
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Yarn hairiness has remained an issue of enormous interest in the field of yarn spinning research, since it directly affects yarn quality. In this work, a new method for the reduction of yarn hairiness is presented by attaching a simple effective air suction system to the web detaching zone of a conventional carding machine immediately behind crushing rollers. The slivers produced were almost free from dust or short loose fibers. Yarn properties such as hairiness, tenacity, elongation at break and evenness were evaluated. The ring-spun yarn that was produced was called Vacuum Cleaned Carded yarn or VCC yarn, due to the removal of the short fibers by air suction. The properties of VCC yarns were compared with those of conventionally produced reference yarn sample. Comparison of the results showed that the hairiness of optimum VCC yarn decreases by approximately 20%, while its tenacity, elongation at break and evenness were significantly improved. It was also found that the VCC yarn exhibited better spinning stability and was more environmentally friendly than the reference yarn.
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Viswanathan, G., V. G. Munshi, A. V. Ukidve, and K. Chandran. "Comparative Evaluation of Yarn Hairiness by Different Methods." Textile Research Journal 58, no. 8 (August 1988): 477–79. http://dx.doi.org/10.1177/004051758805800808.
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Using a rapid yarn hairiness tester, the Shirley yarn hairiness meter, this work has confirmed that for cotton yarns, the statistical distribution of the number of protruding ends of different lengths is exponential. The study indicates that, compared to the other hair length settings available on the hairiness meter, the recommended 3 mm hair length is suitable and advantageous. Further there is a high correlation between the Shirley hairiness meter and two other hairiness indices, the modified Jedryka and the Digital fibrograph, considered in this work.
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Gorjanc, Dunja Šajn, and Neža Sukič. "Determination of Optimum Twist Equation for the Long Staple Combed Cotton Ring-Spun Yarn." Fibers 8, no. 9 (September 21, 2020): 59. http://dx.doi.org/10.3390/fib8090059.
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The aim of this research was to determine the optimum twist equation for ring-spun yarns. The yarn twist can be calculated by different equations. With the research, we tried to find the appropriate equation to determine the yarn twist, which is determined by the values of yarn strength and hairiness. In the research, yarns from long staple combed cotton rovings and of different fineness (10 tex, 11.8 tex, 20 tex and 29.4 tex) were analyzed. The yarn twist was calculated using the equations of Koechlin and Laetsch. The analyzed yarns were produced in the spinning mill on the laboratory ring spinning machine Spinntester. In the second part of the investigation, yarn strength and hairiness were analyzed as a function of yarn twist. The results showed that Laetsch’s equation is suitable for determining the twist for yarns with a fineness of 10 tex, 11.8 tex, 20 tex and 29.4 tex, since, in this case, the calculated number of yarn threads is higher and thus the strength and elongation at break are also higher. The yarn hairiness is higher in analyzed samples for yarns with the twist calculated according to the Koechlin’s equation.
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Moučková, Eva, Iva Mertová, Petra Jirásková, Gabriela Krupincová, and Dana Křemenáková. "Properties Of Viscose Vortex Yarns Depending On Technological Parameters Of Spinning." Autex Research Journal 15, no. 2 (June 1, 2015): 138–47. http://dx.doi.org/10.2478/aut-2014-0046.
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AbstractThis paper analyzes the relationship between technological parameters of spinning of 100% CV Vortex yarns of different counts and its selected geometrical parameters (a lead of helix of wrapping fibre ribbon, yarn diameter) as well as yarn properties. The number of twist of wrapping fibre layer is determined. The effect of the yarn delivery speed, hollow spindle diameter, and the main draft on the hairiness, mass irregularity, tenacity, elongation, resistance to abrasion and bending rigidity of Vortex yarn is observed. The yarn properties are compared with the properties of open-end rotor spun yarns. Slivers of the same spinning lot were used for the production of both kinds of yarn. The results showed that the delivery speed in combination with spindle diameter affects yarn diameter, hairiness and abrasion resistance. Mass irregularity and imperfections of yarn is mainly affected by the main draft of drafting unit. Technological parameters of spinning do not affect the level of bending rigidity of the Vortex yarn. Tested rotor spun yarns had a larger diameter, higher hairiness, lower tenacity and higher elongation, lower mass irregularity and number of imperfections, higher abrasion resistance and lower bending rigidity compared to tested Vortex spun yarns.
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Ma, Chongqi, Xinlong Li, and Baoming Zhou. "Investigation of Mechanical and Physical Properties of Far-Infrared Tencel/Acrylic and Far-Infrared Tencel/Cotton Blended Ring-Spun Yarns." Journal of Engineered Fibers and Fabrics 10, no. 3 (September 2015): 155892501501000. http://dx.doi.org/10.1177/155892501501000311.
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It has been a universal method to obtain better-property yarns by blending different kinds of fibers together. This study, was aimed to investigate the mechanical and physical properties of far-infrared tencel/acrylic (FIT/A) and far-infrared tencel/cotton (FIT/C) blended ring-spun yarns. Yarn samples with five different blend ratios (100/0, 65/35, 50/50, 35/65, 0/100) were spun as 19.7 tex on a ring spinning system. The elongation, breaking strength, yarn irregularity, and hairiness of the two sets of blended yarns were analyzed using the simple rule of mixtures (ROM) and generalized rule of mixtures (GROM). The results show that acrylic blended yarns show higher elongation values, similar breaking strength, lower yarn irregularity values, and higher hairiness values compared to cotton blended ones. In addition, the interactions between the two fibers in both the two sets of yarns have a positive effect on yarn elongation, breaking strength, and yarn irregularity; but a negative effect on the hairiness with a different degree.
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Liu, Shu Qiang, Jin Ming Dai, Hu Sheng Jia, Xu Guang Liu, and Bing She Xu. "Effect of Siro-Spun Processing Parameters on Properties of 55/45 Flax/Cotton Blended Yarn." Advanced Materials Research 331 (September 2011): 502–11. http://dx.doi.org/10.4028/www.scientific.net/amr.331.502.
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Limited studies exist related to the siro-spun spinning of flax ( Linum usitatissimum L.) and cotton (Gossypium hirsutum) blends. The purpose of this study was to determine the influence of various siro-spun processing parameters, including twist factor, space between two rovings and specification of traveler, on yarn qualities, such as yarn hairiness, tenacity and evenness. Results show that both specification of traveler and space between two rovings significantly influenced yarn hairiness and evenness, and heavier traveler and greater space led to decreased hairiness, but bad evenness. Twist factor influenced yarn evenness highly significantly, and smaller twist factor led to worse yarn evenness. Results also indicate the optimum levels of siro-spun process parameters as follows: twist factor αm = 150, space between two rovings 8 mm, traveler Fo 5/0. In relation to the general ring-spinning yarn, the siro-spun spinning yarns had decreased hairiness, little increased tenacity and similar evenness.
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Barella, A., and A. M. Manich. "YARN HAIRINESS UPDATE." Textile Progress 26, no. 4 (March 1997): 1–29. http://dx.doi.org/10.1080/00405169708688867.
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Cui, Rui Fang, and Xiang Hong Li. "Study on Properties of Hard Twist Cotton Yarn." Advanced Materials Research 1028 (September 2014): 20–24. http://dx.doi.org/10.4028/www.scientific.net/amr.1028.20.
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Ring-spun cotton yarn and rotor-spun yarn with hard twist factor were manufactured. It shows that yarn breaking strength varies slightly with twist factor, either ring-spun yarn or rotor-spun yarn. Twist factor has little effect on yarn breaking elongation. Yarn number has effect on yarn hairiness for ring-spun yarn and rotor-spun yarn. Coarser yarn has more hairiness than fine yarn. Ring-spun yarn hairiness is higher than rotor-spun yarn. Twist factor has some effect on coarse yarn uniformity while it affects fine yarn uniformity slightly. Ring-spun yarn has higher strength than rotor-spun yarn. Rotor-spun yarn has less elongation and less hairiness than ring-spun yarn and its uniformity is better.
14
Yilmaz, Demet, and Mustafa Resit Usal. "Effect of Nozzle Structural Parameters on Hairiness of Compact-Jet Yarns." Journal of Engineered Fibers and Fabrics 7, no. 2 (June 2012): 155892501200700. http://dx.doi.org/10.1177/155892501200700209.
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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.
15
Wang, Xungai, Menghe Miao, and Yanlai How. "Studies of JetRing Spinning Part I: Reducing Yarn Hairiness with the JetRing." Textile Research Journal 67, no. 4 (April 1997): 253–58. http://dx.doi.org/10.1177/004051759706700403.
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This paper introduces the concept of JetRing spinning, a new spinning technique that incorporates features of both ring and air-jet spinning systems. In JetRing spinning, a single air jet is used below the yarn-forming zone of a conventional ring spinning system; this jet acts in a way similar to the first jet in air-jet spinning. The swirling air currents in the jet wind the protruding fibers around the yarn body, thus reducing yarn hairiness. The air pressure applied to the jet in this study is 0.5 bar, which is much lower than the air pressure used in air-jet spinning. To evaluate the performance of JetRing spinning, ring spun and JetRing spun worsted yarns of 56 tex are tested for hairiness, tensile properties, and yarn evenness. The hairiness results from the Zweigle hairiness meter show that the JetRing spun yarn has much lower numbers of hairs than the ring spun yarn in almost all the hair length groups. The total number of hairs exceeding 3 mm ( i.e., the S3 value) for the JetRing spun yarn is nearly 40% less than that of the ring spun yarn, while both yarn types show little difference in evenness and tensile properties.
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Frydrych, Iwona, Xuzhong Su, Xiaoxuan Qin, Xiaoxuan Qin, Xiaoxuan Qin, Xinjin Liu, Xinjin Liu, Chunping Xie, and Bojun Xu. "Research on the Qualities of Cellulosic Yarn." Fibres and Textiles in Eastern Europe 26, no. 1(127) (February 28, 2018): 30–35. http://dx.doi.org/10.5604/01.3001.0010.7793.
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Cellulosic fibre is a kind of renewable fibre that has attracted more and more attention in textile processing recently. Yarn spinning is the first fundamental process in textile processing. Therefore, in this paper, taking viscose fibre and tencel fibre as examples, the qualities of cellulosic yarn were studied. Three kinds of pure viscose and tencel yarn: 14.6 tex (40S), 9.7 tex (60S) and 7.3 tex (80S), were spun on a ring spinning system modified with lattice apron compact spinning (LACS) and complete condensing spinning (CCS), respectively. The spun yarn qualities, yarn evenness, breaking strength and hairiness, were tested and comparatively analysed. Then two kinds of cellulosic blend yarn including 14.6 tex, 9.7 tex and 7.3 tex JC/R 60/40 yarn, and 14.6 tex, 9.7 tex and 7.3 tex JC/T 70/30 yarns were spun on a ring spinning system modified with CCS. The spun yarn evenness, breaking strength and hairiness were tested, and the cross sections of the spun yarns were presented using a Y172 Hardy’s thin cross-section sampling device. The results show that for both the pure viscose and tencel yarn, compared with LACS, CCS has better yarn evenness, a little lower yarn breaking strength and a little more hairiness, while the uniformity of yarn qualities are all improved. For the cellulosic blend yarn, compared with the pure cellulosic yarn, yarn evenness is worse, especially for the cotton and tencel blend yarn.
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Liu, Xinjin, and Xingfeng Wang. "Research on qualities of compact spun silk yarn." International Journal of Clothing Science and Technology 29, no. 2 (April 18, 2017): 238–50. http://dx.doi.org/10.1108/ijcst-05-2016-0055.
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Purpose Spun silk is one of the top grade textile materials, and its products have high added value and meet the needs of the market. However, the technology level and process design of silk spinning are still much lower than cotton spinning; especially singeing is applied on spun silk yarn, and generates waste materials. The purpose of this paper is to introduce a kind of pneumatic compact spinning, four-line compact spinning (FLCS), into silk spinning and study the corresponding spun yarn qualities. Design/methodology/approach First, taking the silk spinning frame FK501 as an example, the process of modification of FLCS is presented. Then, three kinds of spun silk yarns, 80 Nm (12.5tex), 100 Nm (10tex) and 120 Nm (8.3tex), are spun on the common silk spinning frame FK501 and the spinning frame modified with FLCS. The evenness, breaking strength and hairiness of spun yarns are tested and comparatively analyzed. After the ply yarn production, three singeing procedures should be applied on the ring ply yarns, while only two singeing procedures should be applied on the compact ply yarns, which is beneficial for material saving. Findings The results show that compared with ring spun silk yarns, the comprehensive quality of compact spun silk yarns is improved, especially the harmful long hairiness (=3 mm) of yarn. Compared with the single spun silk yarn, the comprehensive qualities of the ply yarn are improved; especially, the breaking strength of the ply yarns is two times larger than the single yarn. After singeing, the hairiness of the ply yarn is decreased greatly, and the evenness is also improved, while the strength is decreased. Compared with ring spun silk yarn, the singeing times of compact spun silk yarn can be decreased, and the gas consumption in each singeing is also decreased, which is beneficial for material saving. Originality/value In this paper, a kind of pneumatic compact spinning, FLCS, is introduced into the silk spinning. It is shown that compared with ring spun silk yarns, the comprehensive quality of compact spun silk yarns is improved, especially the harmful long hairiness (=3 mm) of yarn. After the ply yarn production, three singeing procedures should be applied on the ring ply yarns, while only two singeing procedures should be applied on the compact ply yarns, which is beneficial for material saving.
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Yanhong, Wei, Xinjin Liu, Xuzhong Su, and Zhao Zhimin. "Effects of spinning process and core yarn contents on yarn shape retention." International Journal of Clothing Science and Technology 32, no. 4 (December 26, 2019): 457–69. http://dx.doi.org/10.1108/ijcst-11-2018-0142.
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Purpose In order to develop high shape retention yarn and investigate the effects of spinning process and core yarn contents on the shape retention of yarn, in this paper, three kinds of yarns, JC/T400 18.5tex (55.6dtex) core-spun yarn, JC/T400 18.5tex (44.4dtex) core-spun yarn and JC18.5tex pure cotton yarn were spun by using the complete condensing Siro-spinning technology. The paper aims to discuss these issues. Design/methodology/approach In this paper, the core-spun yarns were spun by using the complete condensing spinning and Siro-spinning technology. Two key spinning processes, yarn twist factor and core yarn pre-draft ratio, were optimized by using the orthogonal test method first. Then, via the variable control method, the position of the core yarn, the position of the bell mouth and the center distance between two bell mouths were optimized, respectively, and corresponding optimal spinning process of the three yarns was determined. Finally, the yarns were spun under the optimal process, and the performance of the spun yarns was tested and compared. Findings Results show that the yarn twist factor affects yarn strength and hairiness, the position of bell mouth affects the evenness and hairiness of the yarn mainly, and the position of the core yarn affects the coverage and hairiness of the yarn. For the Z-twist spinning, the core yarn enters the front roller from the left side of two strands center, which is beneficial to improve the covering effect of core yarn, and reduce the pilling phenomenon of the yarn. The contents of core yarn affect indicators of the yarn shape retention, such as yarn strength, elastic recovery and abrasion resistance. Originality/value The shape retention of yarns affects the shape retention of fabrics, and the production of yarn with high shape retention is a key step in achieving shape retention of fabrics. At present, there are little studies on the shape retention of yarns, most researchers shave focused on shape retention of fabrics. Using the complete condensing Siro-spinning method to spin the core-spun yarn can improve the quality of the yarn. Compared with traditional ring-spinning yarns, the addition of the core yarn can improve the shape retention of the yarn.
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Zhang, An Fen, and Zhao Peng Xia. "Properties of Jute Blended Yarns Spun on Ring Spinning System." Advanced Materials Research 779-780 (September 2013): 290–93. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.290.
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The chemical modified jute fibres were spun into jute/cotton blended yarns by using of two different blending methods (the fibre blending and the sliver blending) on ring spinning system. The tensile, hairiness, Uster evenness properties of two kinds of blended yarns with different blend ratios and yarn counts were investigated in this paper. It was found that the tensile, hairiness index, mass irregularity and imperfections of blended yarn depended on amount of jute fibres in blends. The draw frame blended yarns processed the better quality than that of intimate blended yarns.
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Yongfu, Xu, Yi Zhang, and Gao Yuan yuan. "Preparation and fuzzy evaluation of wool hollow yarn." Textile Research Journal 90, no. 9-10 (October 23, 2019): 1149–56. http://dx.doi.org/10.1177/0040517519884586.
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Wool hollow yarn not only has the characteristics of being skin-friendly and warm, it also has good air and moisture permeability; thus, it has great development potential. Here, we first show that the water-soluble (polyvinyl alcohol (PVA)) fiber ratio in core-spun yarn should not exceed 30%; to ensure smooth spinning, a core yarn linear density of 3.4–5.6 tex was selected by theoretical analysis. Second, using rabbit hair fiber with tencel fiber, which has high tenacity, as an environmentally friendly blended outsourcing fiber, and water-soluble (PVA) fiber for the core yarn, we prepared five types of core-spun yarns. Water-soluble (PVA) fiber was removed in 20 min to prepare wool hollow yarn using room temperature water. Finally, properties of the wool hollow yarn produced, such as breaking strength, breaking elongation, evenness of CV (coefficient of variation) value, >3 mm hairiness index, and deviation from linear density after removing PVA, were tested and analyzed, and evaluated comprehensively by means of fuzzy mathematics. The results showed that the hairiness of wool hollow yarn was improved, the mechanical properties and evenness of sliver and hairiness were decreased, and the overall properties of hollow yarns with a core yarn content of 25% were the best.
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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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Havlová, Marie, and Jana Špánková. "Porosity of Knitted Fabrics in the Aspect of Air Permeability - Discussion of Selected Assumptions." Fibres and Textiles in Eastern Europe 25 (June 30, 2017): 86–91. http://dx.doi.org/10.5604/01.3001.0010.1695.
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The main focus of this paper is to look into the relationship between the structure and air permeability of single jersey knitted fabric – especially verifying some basic assumptions. First, if it is possible to neglect the permeability of yarns themselves when we evaluate that of knits, and second, if yarn hairiness plays a significant role when we evaluate the relationship between air permeability and the porosity of knits. Theoretical calculations and experiments which were performed using an analysis of microscopic images of the structure of textile materials are used for the determination of inter-yarn and intra-yarn porosity. The paper aims to show t hat the characteristic dimension of inter-yarn pores is significantly higher than that of intra-yarn pores, and also that the values of inter-yarn porosity measured using image analysis methods with hairiness and after the removal of hairiness are statistically significantly different. The correlation coefficients for the porosity values measured and calculated are very high.
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Balci Kilic, Gonca, and Ayşe Okur. "Effect of yarn characteristics on surface properties of knitted fabrics." Textile Research Journal 89, no. 12 (September 7, 2018): 2476–89. http://dx.doi.org/10.1177/0040517518797337.
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Fabric surface properties are significant in terms of fabric handle, sensorial comfort, aesthetic and performance properties. Yarn properties are among the most important parameters that affect fabric surface properties. Besides, fiber type, fiber properties and spinning technology etc. directly affect the physical, mechanical and performance properties of yarns as well as fabric surface properties. In the scope of this study, effects of fiber type (raw material), fiber fineness and fiber length on the surface properties of fabrics were investigated. Also, properties of yarns were measured and their effects on fabric surface properties were analyzed. For this purpose, unevenness, optical unevenness, imperfections, structural properties (diameter, density, roughness and shape), hairiness and frictional properties of yarns were measured, and relationships between abrasion resistance, pilling and frictional properties of knitted fabrics were examined. Regression models were developed in order to predict fabric surface properties from yarn characteristics. Based on comprehensive data analysis, it was concluded that variation in yarn friction and yarn hairiness explains approximately 80–85% of fabric-to-fabric and fabric-to-skin (gazelle skin) friction coefficients. Furthermore, positive correlations between yarn hairiness and weight loss, and yarn hairiness and thickness change after abrasion test, were observed. Additionally, a new parameter, the optical contact index (OCI), based on an image analysis method, was suggested to determine the surface properties and roughness of fabrics. Relationships between the OCI and other tested fabric surface properties were statistically analyzed. Statistical analyses showed that high correlations exist between the new parameter and fabric friction and abrasion resistance at the 0.05 significance level.
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HONGYAN, WU, WU LI, KANG SHUANG, and YIN JIANHUA. "Application of nano-TiO2 in sizing of kapok blended yarn." Industria Textila 70, no. 02 (May 1, 2019): 192–96. http://dx.doi.org/10.35530/it.070.02.1578.
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The usability of Rutile type nano-TiO2 as the auxiliary in sizing was investigated in order to improve the quality of kapok blended yarn. First, TiO2 with different quality was added to the traditional size, and four kinds of kapok blended yarns were starched. Then, the strength, elongation, abrasion resistance and hairiness of the sized yarns were tested. Finally, the effect of TiO2 content on the performance of the yarn was analyzed. The results demonstrate that using TiO2 as sizing agent is favorable to the increase in strength, loss in elongation, abrasion resistance and hairiness of sized yarns. And, when the ratio of TiO2 to starch is 1.5%, the properties of the sized yarn are excellent.
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HAKAN, ÖZDEMİR. "Effects of sizing and yarn structural properties on the physical properties of combed and carded cotton ring yarns." Industria Textila 69, no. 02 (May 1, 2018): 81–86. http://dx.doi.org/10.35530/it.069.02.1329.
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Warp yarns, prepared as warp beam, are exposed to various forces at weaving loom. Warp yarns are bended on the back rest, subjected to friction from drop wires and healds. They are also exposed to friction and impact at reed and thereby abraded. Yarns are sized in order to increase their resistance to these effects. Sizing agents ensure that warp yarns can be weaved with sizing process. On the other hand, yarn count and yarn type (combed or carded yarn) are the significant yarn structural properties that determine and so affect the physical properties of yarn. The main reason and objective this study is to investigate the effects of yarn structural parameters (yarn count and yarn type) and sizing on the physical properties (breaking strength, elongation at break, hairiness, friction coefficient) of 100% cotton carded and combed ring yarns, sized with four different sizing agents, which were not studied in the references. It is observed that sizing process cause to decrease in the hairiness up to 99% and in friction coefficients of combed and carded yarns whereas to increase in the breaking strengths of combed and carded yarns. And also, the combed yarns had better tensile and frictional properties than carded yarns.
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Liu, Keshuai, Duo Xu, Jiang Wei, Junlong Ni, Shengming Yang, Xiaoguang Xu, Wan Li, Xinling Zhang, Bo Deng, and Weilin Xu. "Comparative study of viscose yarn properties spun with a softening device and pressure plate." Textile Research Journal 89, no. 23-24 (May 2019): 4992–5005. http://dx.doi.org/10.1177/0040517519844614.
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In order to reduce energy consumption and further improve the performance of viscose yarns, this study introduced a collaborative control method to improve spun yarn performance by contacting the spinning strand with both a softening device and a pressure plate. In this study, we analyze the improving mechanism of spun yarn performance using the softening device and pressure plate. The results show that thermal insulation layer formed between the softening device and pressure plate could heat the yarns in all directions to further re-wrap out-exposed hairiness into the main body of yarns and save energy consumption. Four groups of 19.7 tex viscose yarns were spun with different collaborative apparatus (with and without the softening device or pressure plate). Four groups of viscose yarns were tested in terms of hairiness, unevenness, and tensile property. Moreover, the experimental results show that collaborative apparatus with the softening device and pressure plate could significantly improve yarn performance, including CV value, hairiness, break elongation, and breaking strength to 11.3%, 18.94, 12.9%, and 311.0 cN, respectively.
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Cao, Gen Yang, Dan Sheng, Kai Yang, Xue Feng Lu, and Wei Lin Xu. "Nylon 66 / Nomex Composite Yarn Performance Analysis." Applied Mechanics and Materials 568-570 (June 2014): 1671–74. http://dx.doi.org/10.4028/www.scientific.net/amm.568-570.1671.
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The embedded composite spinning technology was applied in spinning the composite yarn of polyamide 66 and nomex .The relationship of the polyamide 66 and nomex’s content with the mechanical properties of composite yarn and hairiness was discussed. The method of cluster analysis was applied in analyzing the four kinds of yarn’s mechanical properties. And the results show that when the confidence interval is 95%, the significance of two kinds yarns were greater than 0.05. There is no significant difference between the programs. While the analysis of the hairiness data showed that the fourth solution’s harmful hairiness was much lower that the first solution’s. Therefore, the best solution is the fourth solution.
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Krupincová, Gabriela, and Milan Meloun. "Yarn hairiness versus quality of yarn." Journal of the Textile Institute 104, no. 12 (December 2013): 1312–19. http://dx.doi.org/10.1080/00405000.2013.800377.
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Kuthalam, Sankara, and P. Senthikumar. "Influence of Spindle Air Pressure and its Direction on the Quality Characteristics of Polyester/Cotton Vortex Yarn." Journal of Engineered Fibers and Fabrics 9, no. 4 (December 2014): 155892501400900. http://dx.doi.org/10.1177/155892501400900418.
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The influence of spindle air pressure and its direction on the properties of Polyester/Cotton vortex yarn was studied. The spindle air pressure direction was changed in both Z and S directions on the Z twist yarn of Ne 40s Polyester/Cotton vortex yarn (50:50 polyester: cotton) and these yarns were then tested for their properties such as tensile, unevenness, and hairiness. It was found that unevenness was lower with normal spinning condition and increased when the spindle air pressure increased in both directions. Imperfections were also found to be minimum with normal spinning condition and increased with increase in spindle air pressure. The yarn tenacity and elongation at break found to be lower at normal spinning condition. When the spindle air pressure increased yarn tenacity and elongation at break also increased with increase in spindle air pressure. At the same time spindle air pressure in the same direction of basic yarn twist gave less increase in tenacity and elongation than opposite direction of basic yarn twist. Hairiness index, H and hairiness in different length classes continuously increased as the spindle air pressure increased in opposite direction of basic yarn twist.
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Yang, Rui-Hua, Wei-Mian Wu, Hong-Bo Wang, Yu-Qin Wan, Chun-Ping Xie, and Wei-Dong Gao. "Effects of Solospun Roller on Properties of Cotton/Polyester Solo-Sirofil Composite Yarn." Journal of Engineered Fibers and Fabrics 7, no. 3 (September 2012): 155892501200700. http://dx.doi.org/10.1177/155892501200700313.
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The surface characteristics of a solospun roller are important to the properties of solo-sirofil yarns. In this research, a three-level, three-factor, orthogonal experimental design (33) was used to investigate the effect of a solospun roller diameter, groove width and groove depth on the hairiness of cotton/polyester composite yarn. Solo-sirofil yarns with different solospun rollers were produced, and the hairiness was tested. It was shown that the hairiness of the solo-sirofil composite yarn was reduced by 44% compared to that of the sirofil. The structure of the solo-sirofil was improved when the thickness of the groove is 0.2 mm, with an alternating depth of 0.3 mm and 0.4 mm, a width of 0.5 mm and a roller diameter of 13 mm.
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Zhang, Ming Guang, Xue Zhi Yu, and Peng Zi Sun. "Effect of New Type Gill pin Taker-in on Polyester Yarn Hairiness." Advanced Materials Research 332-334 (September 2011): 545–48. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.545.
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Effect of carding machine using gill pin taker-in on polyester yarn hairiness was studied. The hairiness of the yarn processed by carding machine with gill pin taker-in and saw-tooth taker-in respectively, which using three-grade speed was tested by YG172 Yarn Hairiness Tester. The results show that (1) when using gill pin taker-in, it is most advantageous to the reduction of hairiness of 2 mm and above when the taker-in speed is 1290 r/min, while it is most advantageous to the reduction of hairiness of 3 mm and above when the taker-in speed is 820 r/min; (2) when using saw-tooth taker-in, it is most advantageous to the reduction of yarn hairiness when the taker-in speed is 1290 r/min; (3) the hairiness of the yarn processed by gill pin taker-in is more than that processed by saw-tooth taker-in as a whole.
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GIZEM KARAKAN, GÜNAYDIN. "Effect of pın spacer apparatus on the propertıes of knıtted fabrıcs from cotton-tencel yarns." Industria Textila 70, no. 02 (2019): 125–32. http://dx.doi.org/10.35530/it.070.02.1607.
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Yarn quality is an important factor as it directly plays an important role in fabric properties. Among many attempts for improving yarn properties in spinning technologies, pin spacer is one of the developed apparatus which can be mounted separately on the compact spinning unit used for improving the yarn properties especially in terms of yarn evenness and hairiness. Cotton-Tencel blended compact yarns are widely preferred among the textile consumers owing to high comfort feature of Tencel fibers combined with cotton fibers’ unique properties. In this study, cotton (85%) – Tencel (15%) compact yarn samples were produced as yarn groups of combed yarn and carded yarn with utilizing and without utilizing pin-spacer apparatus at a linear density of Ne 40/1. In order to analyze the effect of pin-spacer apparatus on yarn properties, unevenness, imperfections, hairiness (H) and tensile measurements were evaluated. The greige and dyed single jersey plain knitted samples produced from those yarns were also compared in terms of dimensional changes in wale and course direction (%), pilling grades, bursting strength (kPa), air permeability values (mm/s) and the fabric surface color properties. According to test results, using pin-spacer apparatus generally improved carded and combed compact yarns’ some properties as well as some knitted fabric properties made of those yarns.
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Xia, Zhigang, Weilin Xu, and Xungai Wang. "Improving fiber trapping with a contact surface during the ring twisting of two cotton yarns." Textile Research Journal 82, no. 3 (February 2012): 272–79. http://dx.doi.org/10.1177/0040517511426611.
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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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Yildirim, Kenan, Asuman Kanber, Mehmet Karahan, and Nevin Karahan. "The solar properties of fabrics produced using different weft yarns." Textile Research Journal 88, no. 13 (May 30, 2017): 1543–58. http://dx.doi.org/10.1177/0040517517712095.
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Woven fabric is composed of two yarns system, known as the weft and warp yarns. Each yarn system has an effect on the physical, performance, and optical properties of fabric. Any change in one or both yarn systems greatly alters the fabric properties. The solar and luminous properties of fabrics are also affected by altering the weft yarn or both yarn systems. This study investigates the effect of altering the weft yarn system on the solar and luminous properties of fabrics. The differences in the weft yarn in the fabrics were based on the weft yarn structure, including the yarn linear density, amount of twist on the yarn, yarn evenness, hairiness, spinning method, fiber composition of the yarn, and weft density of the fabric. The fabric luminous and solar properties were measured according to EN 14500 using an ultraviolet-visible-near-infrared (UV/VIS/NIR) test device and calculated from the EN 410 standard test method. According to a variance analysis, the weft density factor is shown to have an effect on the solar properties of the fabric, especially the UV transmittance properties of the fabric. Although non-parametric test results with a 95% confidence level show that the yarn structure does not influence the solar characteristics of the fabric, we show from the test results that the yarn structure influences the solar properties of the fabric. Yarn hairiness was the dominant factor for the IR and visible portions of the solar radiation spectra. In the UV region, the fiber composition factor was found to be important. The effect of the yarn linear density was similar to the effect of the weft density factor. The solar transmittance decreases and the reflectance increases when the number of weft yarns per unit length is increased and the yarn linear density in the Ne numbered system is decreased. Increasing the yarn hairiness decreases the transmittance in the IR portion of the solar spectra. The degree of influence that the yarn structure has on the solar properties (with the exception of the UV portion) of the fabric was dominated by the number of weft yarns per unit length. The transmittance properties of the fabric were more affected by altering the yarn structure than the reflectance and absorbance properties.
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Barella, A. "Yarn Hairiness: Further Developments." Journal of The Textile Institute 78, no. 2 (January 1987): 133–39. http://dx.doi.org/10.1080/00405008708631832.
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Singh, Charanpreet, Stuart Gordon, and Xungai Wang. "The mechanism of hairiness reduction in offset ring spinning with a diagonal yarn path." Textile Research Journal 89, no. 8 (May 10, 2018): 1546–56. http://dx.doi.org/10.1177/0040517518775915.
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Reducing yarn hairiness on a ring spinning machine generally involves an investment and ongoing process cost. Although conceptually successful, the cost factor associated with existing technologies has led to exploration for new ways of reducing hairiness. Offset spinning is an outcome of one such novel initiative in which the spinning triangle geometry is altered by diagonally offsetting the yarn path during spinning. This technique has been reported to reduce hairiness but a consensus on a specific direction of offset (left or right) remains pending as its underlying mechanism is still not completely understood. In this study, we developed an experimental setup to image a spinning triangle geometry in detail and observed the effect of offsetting its shape on fiber path. It was found that the direction of offset (left or right) in combination with a specific twist direction (S or Z) can result in a complete change of yarn twist configuration (Archimedean or Fermat's spiral), which ultimately controls hair generation tendency during spinning. On the basis of agreement between imaging observations and hairiness parameter results obtained from yarns spun with different offset conditions, a mechanism of hairiness reduction and preferred direction of offset is proposed.
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Günaydin, Gizem Karakan, Ali Serkan Soydan, and Sema Palamutçu. "Evaluation of Cotton Fibre Properties in Compact Yarn Spinning Processes and Investigation of Fibre and Yarn Properties." Fibres and Textiles in Eastern Europe 26, no. 3(129) (June 30, 2018): 23–34. http://dx.doi.org/10.5604/01.3001.0011.7299.
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Fibre properties are influential factors for yarn properties. Cotton, whose physical properties vary depending on the cultivation region, is still a very common fibre used in the textile industry. Properties such as fibre length, fineness, strength and maturity affect yarn tensility, evenness, imperfections and hairiness. Four different 100% cotton blends were used as raw material (American cotton, Aegean cotton, Urfa cotton, Greek cotton) to be converted into 20 tex compact yarns separately. HVI parameters of each blend type starting from the bale until the 2nd drawing passage machine revealed that yarn processing stages and machinery are influential factors for fibre the properties of fibres that are produced on a spinning line. Additionally ANOVA tests supported the idea that the evenness, tensility, yarn imperfections, and hairiness parameter of yarns produced from various cotton blends were statistically different. Principal Component Analyses (PCA) and the Correlation Matrix were also applied in order to analyse the relationship between fibre properties and compact yarn properties of different blends.
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Zhu, Reiyao, and M. Dean Ethridge. "Predicting Hairiness for Ring and Rotor Spun Yarns and Analyzing the Impact of Fiber Properties." Textile Research Journal 67, no. 9 (September 1997): 694–98. http://dx.doi.org/10.1177/004051759706700909.
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Models for predicting ring or rotor yarn hairiness are built using a back-propagation neural network algorithm. These models are based on fiber property input measured by three different systems, hvi, afis, and fmt. We compare the prediction results from the different models, which reveal that yarn hairiness measurements from hvi data are superior to other models. The optimum model is based on the availability of all three measurement systems. We also study the impact of each fiber property on yarn hairiness. The dominant effect is fiber length. Each of the remaining properties has a different degree of impact on ring or rotor yarn hairiness.
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Rust, J. P., and S. Peykamian. "Yarn Hairiness and the Process of Winding." Textile Research Journal 62, no. 11 (November 1992): 685–89. http://dx.doi.org/10.1177/004051759206201109.
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The influence of winding on yarn hairiness is examined, and increased hairiness during winding is verified using a Zweigle hairiness tester. Specifically, this study concentrates on the increase of wild hairs on the yarn surface after winding, and the relationship between winding tension and yarn hairiness. Fiber transfer is proposed to explain the increased wild hairs; experimental results verify that fiber transfer occurs. A theory is proposed to explain the mechanism of fiber transfer during winding, and experimental results are given to support this mechanism.
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Li, Peiying, Mingrui Guo, Fengxin Sun, and Weidong Gao. "An adhesive-aided ring spinning for improving cotton yarn quality with the aid of sodium carboxymethyl cellulose solution." Journal of Engineered Fibers and Fabrics 15 (January 2020): 155892502092783. http://dx.doi.org/10.1177/1558925020927837.
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An adhesive-aided ring spinning was developed to improve cotton yarn quality through the wetting and adhesion effect of an adhesive solution, namely, sodium carboxymethyl cellulose solution on fibrous strand in yarn formation zone during spinning process. The spinning mechanism of the adhesive-aided ring spinning with sodium carboxymethyl cellulose solution was analyzed, and the effects of two factors, that is, speed ratio (the ratio of the linear surface velocity to the output speed) and sodium carboxymethyl cellulose concentration, on the yarn performance are investigated. The experiment results reveal that the adhesive-aided ring spinning with sodium carboxymethyl cellulose concentration of 0.7% can significantly reduce yarn hairiness indicated by the hairiness S3 value reducing to 69% and still showing a prominent reduction (65%) after winding process. It has been found that a slightly faster linear surface velocity of the cylinder of the adhesive-aided ring spinning compared with the output speed of the yarn is more beneficial to the reduction of yarn hairiness S1+2 value. Meanwhile, the higher sodium carboxymethyl cellulose concentration also contributes to a higher breaking strength (increasing from 18.24 to 21.12 cN/tex) and lower breaking elongation (reducing from 4.98% to 4.08%). The abrasion resistance of adhesive-aided ring spun yarns also shows an obvious improvement of 12.8%. Therefore, the newly developed adhesive-aided ring spinning with the sodium carboxymethyl cellulose solution provides an effective method to enhance the quality of cotton yarns.
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Lin, Jian Ping, and Hong Jun Cui. "Affect of Application of Hairiness Reduction Equipment on Winding Quality." Advanced Materials Research 331 (September 2011): 437–43. http://dx.doi.org/10.4028/www.scientific.net/amr.331.437.
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In order to reduce yarn hairiness of spooling procedure and improve the quality of knotless yarn, contrast experiments, under the given standard test conditions, is performed among several cheese with or without airflow hairiness reduction equipment (HRE); analyzing and discussing the application effect and affect of HRE on yarn quality indexs. It is found from the investigation that the application of airflow HRE can effectively reduce yarn hairiness and also reduce yarn’s CV value of tenacity and improve its minimum tenacity, which can decrease ends’ breakage and machine suspension during high speed warping and high speed weaving production and improve weaving efficiency and appearance quality of fabric. Through analytic comparison, the application of airflow HRE will slightly increase yarn neps, but it’s still an effective method for reducing yarn hairiness and improve fabric appearance quality and weaving production efficiency.
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Zhao, Bo. "Applications of Neural Networks in the Hairiness of Ring Spinning Polyester/Cotton Yarn Prediction." Advanced Materials Research 549 (July 2012): 1055–59. http://dx.doi.org/10.4028/www.scientific.net/amr.549.1055.
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In this paper, back-propagation (BP) neural network model is introduced and established. This work describes the application of the BP artificial neural network model for the purpose of predicting the polyester/cotton yarn hairiness. This approach has been developed and evaluated with the use of multiple sets of data, comprising of a range of processing parameters. The yarn hairiness of ring spinning is strongly related to the processing parameters. However, it is difficult to establish physical models on the relationship between the processing parameters and the yarn hairiness. Due to the artificial neural network can fully approximate any complex nonlinear system and study dynamic behavior of any serious undetermined system. It has a highly parallel calculation ability, strong robustness and fault tolerance. So using the artificial neural network to predict the polyester/cotton yarn hairiness of ring spinning is a very effective way. The experimental results and corresponding analysis show that the BP neural network model is an efficient technique for the yarn hairiness of ring spinning prediction and has wide prospect in the application of ring spinning yarn production system.
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KILIC, MUSA, H. KÜBRA KAYNAK, GONCA BALCI KILIC, MURAT DEMIR, and EFLATUN TIRYAKI. "Effects of waste cotton usage on properties of OE-rotor yarns and knitted fabrics." Industria Textila 70, no. 03 (2019): 216–22. http://dx.doi.org/10.35530/it.070.03.1560.
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The use of recycled materials has gained massive importance in textile sector as well as in other sectors as the effects of reduction of natural sources are felt all over the world. In this study, it was aimed to analyse the effects of recycled cotton usage on properties of OE-rotor spun yarns and knitted fabrics produced from these yarns. For this purpose, OE-rotor yarns were produced at different proportion levels of virgin cotton and waste cotton that derived from blowroom 25%, 50%, 75%, 100%, respectively. For better assessment, properties of OE-rotor yarns that contain waste cotton were compared with 100% virgin cotton OE rotor yarn. Physical, structural and mechanical properties such as unevenness, imperfections, hairiness, breaking force, elongation, yarn-to-yarn friction, yarn-to-metal friction and yarn-to-ceramic friction were measured by Uster Tester 4 SX, Uster Zweigle Hairiness Tester 5, Uster Tensorapid 3 and CTT by Lawson Hemphill. At the second part of the study, single-jersey knitted fabrics were produced from OE-rotor spun yarns. Effects of waste cotton proportion on knitted fabric properties such as pilling, abrasion resistance, bursting strength and air permeability were also evaluated. Results showed that, the use of up to 75% per cent of waste cotton blended yarns show no statistically significant differences on yarn and fabric properties.
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Wang, Xungai, and Menghe Miao. "Reducing Yarn Hairiness with an Air-Jet Attachment During Winding." Textile Research Journal 67, no. 7 (July 1997): 481–85. http://dx.doi.org/10.1177/004051759706700702.
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The winding process tends to promote yarn hairiness, a detrimental effect that can be significantly reduced by adding a properly arranged air-jet nozzle. This paper examines the mechanisms of hairiness reduction with an air jet during winding. The results indicate that the direction of the majority of protruding fibers and that of the air vortex play an important role. They also suggest that yarn hairiness can be best reduced if the gyrating air current lowers the twist level before the yam enters the jet, and if the air flow spirals along the yarn in a general direction opposite that of the yarn traverse to suppress the majority of protruding fiber ends. Wrapping of protruding fiber ends around the yarn and removal of “wild fibers” by the swirling air current are believed to be responsible for the reduction in yarn hairiness, and tucking of fiber ends into the yarn structure may also occur under certain conditions.
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Altas, Sevda, and Hüseyin Kadoğlu. "Comparison of Conventional Ring, Mechanical Compact and Pneumatic Compact Yarn Spinning Systems." Journal of Engineered Fibers and Fabrics 7, no. 1 (March 2012): 155892501200700. http://dx.doi.org/10.1177/155892501200700110.
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This research is a comparative study of the physical properties of mechanical compact and conventional spun yarns and fabrics knitted from these yarns. To experiment the relational behavior, mechanical compact and conventional spun cotton yarns were produced in three different yarn linear densities having three twist levels. In order to examine the effect of spinning systems on fabric properties single jersey fabrics were knitted from these yarns. Results showed that, compact spun yarns have less hairiness, higher strength and higher elongation ratio than conventional spun yarns. Also, fabrics produced with compact yarns were found to have less pilling tendency. In the second part of the study, we compared the yarn properties produced with conventional ring, mechanical compact and pneumatic compact spinning systems. Analysis showed that, yarns produced with the pneumatic compact spinning system had the highest strength and the lowest hairiness.
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Altas, Sevda, and Hüseyin Kadoğlu. "Comparison of Conventional Ring, Mechanical Compact and Pneumatic Compact Yarn Spinning Systems." Journal of Engineered Fibers and Fabrics 7, no. 2 (June 2012): 155892501200700. http://dx.doi.org/10.1177/155892501200700201.
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This research is a comparative study of the physical properties of mechanical compact and conventional spun yarns and fabrics knitted from these yarns. To experiment the relational behavior, mechanical compact and conventional spun cotton yarns were produced in three different yarn linear densities having three twist levels. In order to examine the effect of spinning systems on fabric properties single jersey fabrics were knitted from these yarns. Results showed that, compact spun yarns have less hairiness, higher strength and higher elongation ratio than conventional spun yarns. Also, fabrics produced with compact yarns were found to have less pilling tendency. In the second part of the study, we compared the yarn properties produced with conventional ring, mechanical compact and pneumatic compact spinning systems. Analysis showed that, yarns produced with the pneumatic compact spinning system had the highest strength and the lowest hairiness.
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Ma, Hong Cai, Long Di Cheng, Gui Xiang Yan, and Shi Ping Xu. "Influence of Technological Parameter for Ramie Yarn Hairiness on Compact Spinning with Suction Groove." Applied Mechanics and Materials 217-219 (November 2012): 1695–98. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1695.
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The application of compact spinning technology with suction groove for ramie was studied. This technology improved ramie yarn hairiness, breaking strength and so on. The performance of the yarn hairiness was analyzed in detail through contrast test of the compact spinning technology with suction groove and the traditional ring spinning for ramie fiber. At the same time, the comprehensive performances of ramie yarn spinning by the two kinds of spinning technologies were contrasted and analyzed. The results showed that the spinning technology with suction groove can be significantly improved ramie yarn properties: hairiness and breaking strength etc. In the spinning technology with suction groove, the optimal technological parameter for producing least yarn hairiness, A1 B1 C1 D1, is acquired, where the spindle speed A is 6600 r/min, twist B is 608 T/m, the value of negative pressure C is -3.1 kPa, and traveler D is 21 # (yarn Nm 36).
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Sun, Yinyin, Ruru Pan, Jian Zhou, and Weidong Gao. "Analysis of detectable angles of yarn hairiness in optical measurements." Textile Research Journal 87, no. 11 (August 26, 2016): 1297–307. http://dx.doi.org/10.1177/0040517516651108.
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Obstructed by the yarn core, the detectable length and the detection rate of a hairy fiber are mainly determined by the geometry of the yarn and the location of the fiber in an optical system. This paper presents a new theoretical method of analyzing detectable angles of yarn hairiness in optical measurements. Firstly, a cylindrical model of the yarn core is constructed by using the yarn diameter, and spiral lines on the cylinder are drawn using the twist angle of the yarn. Secondly, hairy fibers are simulated by short-line segments passing a spiral line and the Z-axis of the model. The yarn model is projected onto a plane under the assumption of a collimated light source, which is the condition similar to that of optical measurements. The yarn model is cut by a plane parallel to the axes of the Cartesian coordinate system ( XOY) at the emergence points of hairy fibers. Finally, the relationship between the hairiness length and other factors, such as the test length, yarn diameter and detectable angle (i.e. the angle at which hairy fiber can be detected) is established. It has been demonstrated that the detection angle dictates not only the length of each hairiness but also the rate of detectable hairiness in the scene. Given a detectable angle, the upper and lower limits of detectable hairiness lengths can be predicted. The verification results of the detection rate by three measurement methods indicate that the detection rates of optical measurements have a certain guidance function for correcting the hairiness results of optical measurements.
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Ahmed, Farooq, Ghulam Yasin Shaikh, and Ashfaq Ahmed Pathan. "Effect of Lowering Twist Levels on Quality Parameters of Rotor Spun Cotton Yarn." July 2016 35, no. 3 (July 1, 2016): 425–30. http://dx.doi.org/10.22581/muet1982.1603.12.
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Investigations were made to explore the influence of lowering twist level on quality characteristics of rotor spun yarn. Three levels of yarn linear density (i.e. 40, 35 and 30 tex) and five levels of twist (i.e. 700, 600, 550, 500, and 450) were employed during yarn spinning trials. Each twist multiple was investigated at all linear densities for tensile strength, elongation, total CVm (Coefficient of Mass Variation) imperfection index and hairiness. 100% cotton yarn samples were prepared on Reiter R-40 at rotor speed of 90,000 rpm. Determination of elongation, yarn strength, hairiness, mass variation, and total imperfections index was carried out on Uster Tensorapid-4 and Uster Tester-4 as per set standards of ISO standard test methods. Based on investigations it is established that yarn strength and elongation declined minutely (Insignificant) with lowering twist levels but still can be confidently used for knitting yarns. However, significant improvement in total imperfection index and marginal enhancement in CVm were experienced.
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Wang, Xungai. "Recent Research on Yarn Hairiness Testing and Reduction: Part - Reduction of Yarn Hairiness." Research Journal of Textile and Apparel 3, no. 1 (February 1999): 1–8. http://dx.doi.org/10.1108/rjta-03-01-1999-b001.
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