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Journal articles on the topic 'Jet spinning'

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Published: 4 June 2021
Last updated: 8 February 2022

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1

MASUI, TOSHITSUGU, TAKAYUKI OKAWA, and KOZO TOMIITA. "Air Jet Spinning." Sen'i Gakkaishi 49, no. 7 (1993): P256—P262. http://dx.doi.org/10.2115/fiber.49.7_p256.

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2

Wang, Xiu Zhi. "The Preliminary Study on Air-Jet Spinning Spun." Applied Mechanics and Materials 138-139 (November 2011): 1294–95. http://dx.doi.org/10.4028/www.scientific.net/amm.138-139.1294.

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Air-jet spinning combines the advantages of the false twist jet spinning and open end spinning. This paper discusses the property of the air-jet spinning and the main structural factors affecting air-jet spinning yarn strength.
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3

Han, Chenchen, Wenliang Xue, Longdi Cheng, and Zhuanyong Zou. "Theoretical analysis of the yarn fracture mechanism of self-twist jet vortex spinning." Textile Research Journal 87, no. 11 (August 4, 2016): 1394–402. http://dx.doi.org/10.1177/0040517516652352.

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According to the yarn mechanism of self-twist jet vortex spinning, this article analyzes the structure and the fracture mechanism of self-twist jet vortex spinning yarn. Combined with experiments, this article established that the fiber in self-twist jet vortex spun yarn has self-twist, which increases the mutual contact area and the cohesion between the fibers in the yarn. This is helpful to improve the evenness and tensile properties of jet vortex spun yarn. The self-twist jet vortex spinning can keep the high spinning speed of the jet vortex spinning at the same time. The research on self-twist jet vortex spinning lays the foundation for the research and the development of jet vortex spinning.
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4

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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5

HÜSEYİN GAZ, TÜRKSOY, AKKAYA TUĞBA, VURUŞKAN DENİZ, and ÜSTÜNTAĞ SÜMEYYE. "A comparative analysis of air-jet yarn properties with the properties of ring spun yarns." Industria Textila 69, no. 01 (March 1, 2018): 11–16. http://dx.doi.org/10.35530/it.069.01.1419.

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Ring spinning is the most common method used among the short staple fibers spinning methods. Due to limitations of the production speed in the ring spinning, new spinning methods become more popular with each passing day. Air-jet spinning systems gathered attention with their market share in the new spinning methods. In this study, the properties of the air-jet yarns were comparatively analyzed with the properties of the equivalent Ring yarns, for both single and ply-twisted forms. It was found that the Rieter and Murata air-jet yarns do not show significant differences in terms of physical properties of yarns. Due to their special structure, air-jet yarns show lower hairiness and tenacity values when compared to the equivalent Ring yarns.
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6

El-Sayed, Hosam, Claudia Vineis, Alessio Varesano, Salwa Mowafi, Riccardo Andrea Carletto, Cinzia Tonetti, and Marwa Abou Taleb. "A critique on multi-jet electrospinning: State of the art and future outlook." Nanotechnology Reviews 8, no. 1 (November 12, 2019): 236–45. http://dx.doi.org/10.1515/ntrev-2019-0022.

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Abstract This review is devoted to discuss the unique characteristics of multi-jet electrospinning technique, compared to other spinning techniques, and its utilization in spinning of natural as well as synthetic polymers. The advantages and inadequacies of the current commercial chemical spinning methods; namely wet spinning, melt spinning, dry spinning, and electrospinning are discussed. The unconventional applications of electrospinning in textile and non-textile sectors are reported. Special emphasis is devoted to the theory and technology of the multijet electrospinning as well as its applications. The current status of multi-jet electrospining and future prospects are outlined. Using multi-jet electrospinning technique, various polymers have been electrospun into uniform blend nanofibrous mats with good dispersibility. In addition to the principle of multi-jet electro electrospinning, the different devices used for this technique are also highlighted.
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7

Basu, A. "PROGRESS IN AIR-JET SPINNING." Textile Progress 29, no. 3 (September 1999): 1–38. http://dx.doi.org/10.1080/00405169908688877.

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8

Liu, Hong-Yan, Zhi-Min Li, Yan-Ju Yao, and Frank Ko. "Analytical modelling of dry-jet wet spinning." Thermal Science 21, no. 4 (2017): 1807–12. http://dx.doi.org/10.2298/tsci160110072l.

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This paper introduces an analytical method for the analysis and design of a dry-jet wet spinning system. The 1-D mass conservation equation is used, and velocity distribution is assumed to derive a simple relationship among various spinning parameters. The effect of spinneret mass flow rate, solution density, spinneret structure including velocity and air-gap length, and drawing velocity on the dry-jet wet spinning was simulated using the proposed analytical model. Theoretical prediction of fiber diameter is obtained, which depends upon spinning conditions, solution properties, and spinneret structure. The theoretical results were verified by comparing experimental data with the numerical solution. It was found obviously that the theoretical prediction has comparable accuracy as that by numerical computation. The analytical model can be useful for preliminary design of a spinning process for fabrication of fibers with controllable diameter by adjusting parameters in spinning conditions.
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9

Sawhney, A. P. S., and L. B. Kimmel. "Air and Ring Combination in Tandem Spinning." Textile Research Journal 67, no. 3 (March 1997): 217–23. http://dx.doi.org/10.1177/004051759706700310.

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With the objective of boosting ring spinning productivity, a new tandem spinning system combining air-jet and ring spinning technologies in continuous tandem is investigated. In this “air-plus-ring” tandem spinning system, a drafted roving strand as it emerges from the front roller nip feeds into a single- or dual-jet air nozzle where it is subjected to a vortex of compressed air, producing a pneumatically entangled, false-twisted, partially strengthened strand. This so-called prefabricated, air-bolstered strand continuously feeds into a standard ring spinning zone and is ultimately spun into a novel, single-component yarn. By spinning a few cotton and cotton-blend yarns with the lowest practical twist levels possible on both the tandem and conventional ring spinning systems, we show that a tandem spun yarn can be produced with a relatively lower (true ring) twist level than a pure ring spun yarn. To an extent, the tandem spinning's air-bolstering action reinforces the drafted fibrous strand, contributing to yarn formation and hence character. Since ring spinning productivity is inversely proportional to yarn twist level, the relatively lower twist level required in tandem spinning allows a proportionately higher yarn production speed (in some cases, up to 50% faster than the conventional ring spinning), while maintaining spindle speed at the traditional, optimum level imposed by the limiting traveler speed. Tandem spun yarns, however, are somewhat different from, and generally weaker than, conventional ring spun yarns. This paper briefly describes a prototype of the new tandem spinning system developed on a laboratory Spintester, and shows spinning parameters and properties of a few yarns produced on both the tandem arid conventional ring spinning systems, each employing the traditional (maximum) optimum spindle speed of 10,000 rpm for a given 5.0 cm (2 inch) diameter ring.
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10

Liu, Yong, Zhao Xiang Liu, Liang Deng, Ke Jian Wang, and Wei Min Yang. "Effect of Different Factors on Falling Process of Melt Electrospinning Jet." Materials Science Forum 745-746 (February 2013): 407–11. http://dx.doi.org/10.4028/www.scientific.net/msf.745-746.407.

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The falling process of melt electrospinning jet is different from those of solution electrospinning in which there is apparent solvent volatilization. In order to study the factors influencing on the forming process of fibers in melt electrospinning, dropping process of fibers is recorded and analyzed via high speed video camera in the article. Results showed that there was an optimal spinning temperature for melt electrospinning of the polymer; the greater the voltage was, the more obvious stretching action on jet was. However, the voltage did not exceed a certain value, because there was a spinnable voltage limit corresponding to every receiving distance. When the spinning distance was generally short, the jet swinging radius decreased with increasing spinning distance; when the spinning distance was long, the jet was subject to the influence of the environment temperature easily. The changes of viscosity had dominant influence on the motion of jet.
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11

Venkatapathi, T. M., and Taro Nishimura. "Air Jet Spinning. A Critical Review." Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) 44, no. 8 (1991): P349—P354. http://dx.doi.org/10.4188/transjtmsj.44.8_p349.

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12

MORIHASHI, TOSHIFUMI, NARITOSHI OHTA, and HIROSHI YAMA GUCHI. "Air Jet Spinning for Long Staple." Sen'i Gakkaishi 49, no. 7 (1993): P252—P255. http://dx.doi.org/10.2115/fiber.49.7_p252.

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13

Schabikowski, Mateusz, Justyna Tomaszewska, Dariusz Kata, and Thomas Graule. "Rotary jet-spinning of hematite fibers." Textile Research Journal 85, no. 3 (August 2014): 316–24. http://dx.doi.org/10.1177/0040517514542969.

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14

Badrossamay, Mohammad Reza, Holly Alice McIlwee, Josue A. Goss, and Kevin Kit Parker. "Nanofiber Assembly by Rotary Jet-Spinning." Nano Letters 10, no. 6 (June 9, 2010): 2257–61. http://dx.doi.org/10.1021/nl101355x.

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15

Gulsevincler, Ekrem, Mustafa Resit Usa, and Demet Yilmaz. "Modular Jet-Ring Yarn Spinning System." TEKSTILEC 63, no. 2 (June 30, 2020): 80–93. http://dx.doi.org/10.14502/tekstilec2020.63.80-93.

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16

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.
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17

Zhong, Ya Hong, Jian Hui Ma, and Ming Jie Xing. "Fiber Configuration of Air Jet Vortex Spinning Yarns." Advanced Materials Research 834-836 (October 2013): 1784–88. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1784.

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In this paper, the spinning process of air jet vortex spinning was described. The structure of air jet vortex spun yarn was studied by means of blending tracer fibers in spinning. Then the yarns were viewed with the optical microscope and SEM etc. The result shows that air jet vortex spun yarn comprises two parts. The outer layer, composed of twisted fibers, presents helical form. And the inner layer contains about 30% fibers untwisted or slackly twisted. The distance between twisted fiber groups is very short, so the borderline isnt obvious. There is a certain angle between core fibers in parallel and the axes of the yarn. The coefficient of fiber migration of the yarn was calculated, and it is lower than that of ring spun yarn and compact spun yarn.
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18

Das, Biswa Ranjan, S. M. Ishtiaque, and R. S. Rengasamy. "Study on Fiber Overlap and Fiber Extent in Blended Spun Yarns." Journal of Engineered Fibers and Fabrics 8, no. 1 (March 2013): 155892501300800. http://dx.doi.org/10.1177/155892501300800116.

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This article reports on the analysis of the fiber overlap and fiber extent in ring, rotor, and air-jet spun polyester/viscose blended yarns. The fiber overlap and fiber extent was measured by employing the tracer fiber technique. Statistical analysis was carried out at the 95% significance level with the single tail test to trace out specific trends executed by the spun yarns with any change in their blend proportions. The fiber overlap index and spinning-in-coefficient is correlated with tensile characteristics (static and dynamic) of the spun yarns to explore the most influential structural parameter among them for different applications. This presents study indicates that the prediction of spun yarn performance in post spinning processes is more appropriately modeled based on fiber overlap index over spinning-in-coefficient for ring and air-jet spun yarns, whereas spinning-in-coefficient is more appropriate for rotor spun yarns. For apparel use, spinning-in-coefficient is more appropriate over fiber overlap index for rotor and air-jet yarns to model the spun yarn strength as opposed to fiber overlap index for ring spun yarns.
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19

Aubry, E., B. Boubrik, and M. Renner. "ON-LINE MEASUREMENT IN AIR-JET SPINNING." Experimental Techniques 15, no. 4 (July 1991): 28–32. http://dx.doi.org/10.1111/j.1747-1567.1991.tb01195.x.

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20

Chongwen Yu. "Open-End Spinning Using Air-Jet Twisting." Textile Research Journal 69, no. 7 (July 1999): 535–38. http://dx.doi.org/10.1177/004051759906900711.

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21

Yılmaz, Demet, and Mustafa Reşit Usal. "A study on siro-jet spinning system." Fibers and Polymers 13, no. 10 (December 2012): 1359–67. http://dx.doi.org/10.1007/s12221-012-1359-2.

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22

Park, Seung Koo, Seo Hyun Cho, and Richard John Farris. "Dry-jet wet spinning of polyhydroxyamide fibers." Fibers and Polymers 1, no. 2 (June 2000): 92–96. http://dx.doi.org/10.1007/bf02875191.

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23

Ghosh, Anindya, Subhasis Das, and Prithwiraj Mal. "A Comparative Study of Hooks in the Ya Rns Produced by Different Spinning Technologies." Autex Research Journal 15, no. 4 (December 1, 2015): 260–65. http://dx.doi.org/10.1515/aut-2015-0020.

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AbstractThis article presents a comparative study of hooks’ characteristics of ring, rotor, air-jet and open-end friction spun yarns. Hook types and their extent, spinning in-coefficient and mean fibre extent in the yarns produced on different spinning technologies are investigated. The results show that the hook extents for open-end friction spun yarn are the highest followed by rotor, ring and air-jet spun yarns. Ring and air-jet spun yarns have higher percentage and extent of trailing hook as compared with leading hook, whereas, rotor and friction spun yarns show the reverse trend.
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24

Wang, Yu, Yuanjian Tong, Bowen Zhang, Hua Su, and Lianghua Xu. "Formation of Surface Morphology in Polyacrylonitrile (PAN) Fibers during Wet-Spinning." Journal of Engineered Fibers and Fabrics 13, no. 2 (June 2018): 155892501801300. http://dx.doi.org/10.1177/155892501801300208.

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The effects of concentration of dimethyl sulfoxide (DMSO) in the coagulation bath, draw ratio and extrusion speed on surface roughness of polyacrylonitrile (PAN) fibers prepared by wet spinning and dry-jet wet spinning were investigated. The surface roughness was much higher for PAN fibers produced by wet spinning than dry-jet wet spinning. The surface roughness of the fiber increased linearly with increasing concentration of DMSO in the coagulation bath. Higher roughness was observed at higher draw ratios during spinning. The surface roughness of the PAN fibers decreased initially until at 90m/h, then increased with further increases in extrusion speed. A mechanism for formation of PAN fiber surface morphology based on deformation of the soft skins of single fibers during solidification of PAN/DMSO solution caused by stress perpendicular to the fiber axis is proposed. The stress results from recovery of the aligned PAN macromolecules due to shear in the spinneret during extrusion.
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25

Han, Chenchen, Weidong Gao, and Lifen Chen. "Study on the Trajectory of Free-End Fiber in Jet Vortex Spinning Based on the Elastic Thin-Rod Finite Element Model of Flexible Fiber." Autex Research Journal 20, no. 1 (March 1, 2020): 43–48. http://dx.doi.org/10.2478/aut-2019-0005.

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AbstractDuring the air flow twisting process of jet vortex spinning, the moving characteristics of flexible free-end fiber are complex. In this paper, the finite element model of the fiber is established based on elastic thin rod element. According to the air pressure and velocity distribution in the airflow twisting chamber of jet vortex spinning, this paper analyzes the undetermined coefficients of the finite element kinetic differential equation of the free-end fiber following the principle of mechanical equilibrium, energy conservation, mass conservation and momentum conservation. Based on numerical simulation, this paper gets the trajectory of the free-end fiber. Finally, the theoretical result of the free-end fiber trajectory by finite element simulating is tested by an experimental method. This paper has proposed a new method to study the movement of the fiber and learn about the process and principle of jet vortex spinning.
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26

Han, Chenchen, Wenliang Xue, Longdi Cheng, and Jiangwei Yao. "Comparative analysis of traditional jet vortex spinning and self-twist jet vortex spinning on yarn mechanism and yarn properties." Textile Research Journal 86, no. 16 (July 21, 2016): 1750–58. http://dx.doi.org/10.1177/0040517515606359.

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27

Zhiganov, N. K., V. I. Yankov, and E. P. Krasnov. "Cooling of the polymer jet in fibre spinning." Fibre Chemistry 19, no. 6 (1988): 392–94. http://dx.doi.org/10.1007/bf00544917.

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28

Alston, Peter V. "Effect of Yarn Spinning System on Pill Resistance of Polyester/Cotton Knit Fabrics." Textile Research Journal 62, no. 2 (February 1992): 105–8. http://dx.doi.org/10.1177/004051759206200208.

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We have determined the effect of ring, rotor, and air-jet spinning on the pill resistance of jersey and interlock fabrics. The jersey fabrics contained the same polyester type, while the interlock fabrics contained the preferred polyester for each spinning system. In each of the constructions, the air-jet spun fabrics were significantly more pill resistant than ring and rotor spun fabrics. Kinetic studies of the rates of pill formation and wear-off indicate that this difference is due to the much slower formation rate of the air-jet spun fabric. Analysis of pill character suggests that the tightly wrapped structure of the air-jet yarn inhibits the formation of free ends of polyester, which are the primary cause of the pills. Pill resistance for the ring spun fabric was only slightly better than for the rotor spun fabric when the same polyester type was used.
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29

Hauru, Lauri K. J., Michael Hummel, Kaarlo Nieminen, Anne Michud, and Herbert Sixta. "Cellulose regeneration and spinnability from ionic liquids." Soft Matter 12, no. 5 (2016): 1487–95. http://dx.doi.org/10.1039/c5sm02618k.

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30

ISHIHARA, Hideaki, Miaki SHIBAYA, Seishu HAYASHI, and Chisato NONOMURA. "Theoretical Analysis of Air Jet Melt Spinning and Application to Optimization of Spinning Condition." Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) 58, no. 1 (2005): T7—T12. http://dx.doi.org/10.4188/transjtmsj.58.t7.

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31

Li, Jie, Bin He, Ning Pan, and Zhi Juan Pan. "Study on Taylor Cone and Trajectory of Spinning Jet by Altering the Properties of Negative Electrode." Advanced Materials Research 796 (September 2013): 317–22. http://dx.doi.org/10.4028/www.scientific.net/amr.796.317.

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To achieve continuous yarns formed of nanosized filaments during electrospinning, a chemical liquid in a container was used in this study as the collector (i.e. the negative electrode) to convert nanofiber filaments into yarns. This study focuses on analyzing the impact of the chemical solutions employed in the negative electrode on the Taylor cone and trajectory of the fluid jet during the process of electrospinning. The results indicated that only 5wt peregal O solution produced non-interrupted filaments so the spinning system can work continuously for up to 10 hours. Also, the results showed that both the angle and volume of Taylor cone enlarged along with the increase of the electrical conductivity of the negative electrode. When changing the spinning voltage, both the volume of the Taylor cone and the shape of the spinning jet changed significantly.
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32

Wang, Xiao Na, Yang Xu, Qu Fu Wei, and Yi Bing Cai. "Study on Technological Parameters Effecting on Fiber Diameter of Melt Electrospinning." Advanced Materials Research 332-334 (September 2011): 1550–56. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.1550.

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Poly (Lactic Acid) ultrafine fibers were obtained from melt electrospinning in the present work, using a home-made device. To study the effect of main technological parameters on fiber diameter in melt electrospinning, orthogonal design was adopted to examine spinning distance, spinning voltage and melt temperature. Meanwhile, the motion of the jet flow was recorded to help explain the influencing mechanism. Results showed that spinning voltage had the highest impact on the average diameters compared to other considered parameters (spinning distance and melt temperature). fibers with smallest diameter could be produced at 15 kV, 10 cm and 190 o C.
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33

He, Jian-Xin, Li-Dan Wang, Yuman Zhou, Kun Qi, and Shi-Zhong Cui. "Effect of airflow on nanofiber yarn spinning." Thermal Science 19, no. 4 (2015): 1261–65. http://dx.doi.org/10.2298/tsci1504261h.

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The paper proposes a new air-jet spinning method for the preparation of continuous twisted nanofiber yarns. The nozzle-twisting device is designed to create the 3-D rotating airflow to twist nanofiber bundles. The airflow characteristics inside the twisting chamber are studied numerically. The airflow field distribution and its effect on nanofiber yarn spinning at different pressures are also discussed.
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34

Zhang, Zhi-Ming, Yao-Shuai Duan, Qiao Xu, and Biao Zhang. "A review on nanofiber fabrication with the effect of high-speed centrifugal force field." Journal of Engineered Fibers and Fabrics 14 (January 2019): 155892501986751. http://dx.doi.org/10.1177/1558925019867517.

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Among the traditional methods for nanofiber fabrication, their inherent defects limit their application in industry. This work presents a simple and novel spinning technology to fabricate nanofiber, which uses a high-speed rotary spinneret called high-speed centrifugal spinning. Unlike electrospinning, the electric field is not required, and it could fabricate nanofiber in bulk from melt or solution materials. This work introduces the mechanism principle and development of high-speed centrifugal spinning. Besides, the high-speed centrifugal spinning is compared with the traditional spinning methods. The jet movement and nanofiber formation process under the action of centrifugal force are explained in detail. The effects of equipment parameters and spinning solution parameters on final nanofiber morphology are presented. These parameters are controllable, they include rotational speed of spinneret, length and diameter of nozzle, spinning solution concentration, spinning solution viscosity and surface tension, and collection distance.
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35

Haslinger, Simone, Yingfeng Wang, Marja Rissanen, Miriam Beatrice Lossa, Marjaana Tanttu, Elina Ilen, Marjo Määttänen, Ali Harlin, Michael Hummel, and Herbert Sixta. "Recycling of vat and reactive dyed textile waste to new colored man-made cellulose fibers." Green Chemistry 21, no. 20 (2019): 5598–610. http://dx.doi.org/10.1039/c9gc02776a.

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36

Pei, Zeguang, and Chongwen Yu. "Investigation on the Dynamic Behavior of the Fiber in the Vortex Spinning Nozzle and Effects of Some Nozzle Structure Parameters." Journal of Engineered Fibers and Fabrics 6, no. 2 (June 2011): 155892501100600. http://dx.doi.org/10.1177/155892501100600203.

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Vortex spinning, which adopts high speed airflow to insert twist into the yarn, is one of the most promising technological innovations in the textile industry. In vortex spinning, the dynamic behavior of the fiber inside the nozzle, which involves fiber-airflow interaction and fiber-wall contact, plays an important role in the twist insertion process. This paper investigates the airflow characteristics and the fiber dynamic behavior inside the vortex spinning nozzle via a two-dimensional numerical model with the fiber-airflow interaction and fiber-wall contact included. The fiber is assumed to be isotropic, elastic material. The airflow inside the nozzle is assumed to be turbulent, viscous and incompressible. The numerical results show that two vortices with momentarily changed sizes are created upstream of the jet orifice outlets. The imbalance of the pressure around the fiber causes the fiber to move and deform. The trailing end of the fiber rotates with wave shape within the nozzle chamber for several periods to insert twist into the yarn. Based on the model, the effects of three nozzle structure parameters – the jet orifice angle, jet orifice diameter, distance between the nozzle inlet and the hollow spindle, on the dynamic behavior of the fiber, and in turn, the yarn structure and tensile property are investigated. The results show that the appropriate jet orifice angle for obtaining the best yarn tenacity is 70°. The optimal jet orifice diameter is 0.4 mm. The spun yarn has the highest tenacity when the distance between the nozzle inlet and the hollow spindle is 14 mm.
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37

Wang, Hua Qing, Jian Cheng Yang, Kai Yang, Jian Feng Qin, Yu Bai, Shuang Hu Hu, and Xiu Ming Jiang. "The Numerical Simulation of Small Melt-Blown Machine Spinning Die Bead by Fluent." Applied Mechanics and Materials 488-489 (January 2014): 1268–71. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.1268.

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In the melt-blown nonwoven fabric technology,the design of melt blowing die drawing hot air passage is very important. The design of spinning die rely on mapping and experience currently,when forming the series are often inadequate design basis.In order to obtain the die flow of air jet flow and temperature distribution,this paper analyzes the working principle of the die head assembly and establish three basic equations of jet flow field; got jet flow field velocity profile and airflow temperature distribution,experimental results shows that airflow jet flow field simulation results by Fluent obtained are true and reliable,it can also provide references of similar design.
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38

Ishihara, H., S. Hayashi, and H. Ikeuchi. "Computer Simulation of Multi filament Air Jet Melt Spinning." International Polymer Processing 4, no. 2 (May 1989): 91–95. http://dx.doi.org/10.3139/217.890091.

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39

Meco, H., and Ralph E. Napolitano. "Upper-Bound Velocity Limit for Free-Jet Melt Spinning." Materials Science Forum 475-479 (January 2005): 3371–76. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.3371.

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The upper bound for the production of uniform amorphous ribbons during free-jet melt spinning is predicted by coupling a mass balance condition for the melt-pool with a simple boundary layer model for momentum transfer. The relationships between melt-pool length, ribbon thickness and wheel speed are investigated, and a criterion is developed for the onset of unsteady melt-pool behavior, which has previously been associated with increased surface roughness, porosity, and the formation of crystalline phases at high wheel speeds.
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40

Zeng, Y. C., Yu-Qin Wan, C. W. Yu, and Ji-Huan He. "Controlling the Air Vortex Twist in Air-Jet Spinning." Textile Research Journal 75, no. 2 (February 2005): 175–77. http://dx.doi.org/10.1177/004051750507500216.

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41

Wallenberger, Frederick T., Norman E. Weston, Ketil Motzfeldt, and Dennis G. Swartzfager. "Inviscid Melt Spinning of Alumina Fibers: Chemical Jet Stabilization." Journal of the American Ceramic Society 75, no. 3 (March 1992): 629–36. http://dx.doi.org/10.1111/j.1151-2916.1992.tb07852.x.

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42

Abdal-Hay, Abdalla, NasserA M. Barakat, and Jae Kyoo Lim. "Novel Technique for Polymeric Nanofibers Preparation: Air Jet Spinning." Science of Advanced Materials 4, no. 12 (December 1, 2012): 1268–75. http://dx.doi.org/10.1166/sam.2012.1382.

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43

Suzuki, Shiori, Azusa Togo, Hongyi Gan, Satoshi Kimura, and Tadahisa Iwata. "Air-Jet Wet-Spinning of Curdlan Using Ionic Liquid." ACS Sustainable Chemistry & Engineering 9, no. 11 (March 8, 2021): 4247–55. http://dx.doi.org/10.1021/acssuschemeng.1c00488.

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44

Cai, Tao, Yi Man Wang, Yu Rong Yang, Min Wei, and Min Kui Wang. "Regenerated Bamboo Fiber from Green Solvent." Applied Mechanics and Materials 423-426 (September 2013): 370–72. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.370.

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Regenerated bamboo fiber was prepared with green solvent. The rheological behavior of the spinning solution was investigated and a dry-jet wet spinning process was applied for making bamboo fiber. The results showed that spinning solution belonged to the typical shear thinning fluid, and it is found that the content had influence on the apparent viscosity of solution. In addition, the regenerated bamboo fiber had cellulose II crystal structure. and the orientation and crystallinity of fiber increased with the increasing of draw ratio, thereby the mechanical properties of fiber improved.
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45

Wu, Yu-Ke, and Yong Liu. "Fractal-like multiple jets in electrospinning process." Thermal Science 24, no. 4 (2020): 2499–505. http://dx.doi.org/10.2298/tsci2004499w.

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The electrospinning process is greatly affected by the instability of Taylor cone, an instable point can eject a jet, and multiple instable points can produce multiple jets. A fractal-like multi-jet phenomenon was found in electrospinning process with auxiliary electrodes, and main factors affecting the spinning process were studied experimentally, which included solution viscosity, surface tension, and conductivity. The fractal-like multi-jet is feasible to control the fiber morphology and its output.
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46

Cheng, Hai Ming, En Jie Zhang, Xue Min Yin, Yu Mei Zhang, and Hua Ping Wang. "Structure and Property Development of Polyacrylonitrile Fiber with Ionic Liquid as Solvent during Spinning Process." Advanced Materials Research 936 (June 2014): 997–1001. http://dx.doi.org/10.4028/www.scientific.net/amr.936.997.

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In order to study the structure and property development of polyacrylonitrile fiber during spinning process with ionic liquid as solvent, the 13 wt% PAN/[BMICl solution was prepared by dissolving polyacrylonitrile (PAN) in 1-butyl-3-methylimidazolium chloride ([BMICl). The dry-jet wet spinning of PAN/[BMIM]Cl was carried out to obtain the samples along spinning line. The mechanical properties, dynamic mechanical properties (DMA) and supramolecular structure of PAN fiber were analyzed. It is found that along spinning line tensile strength of PAN fiber increased significantly; initially, elongation at break increased followed by subsequent decrease. The fibers glass transition temperature (Tg) drops initially and later becomes constant; however, the fibers crystallinity and orientation increased.
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47

Zha, Shangwen, Jianjia Yu, Guoyin Zhang, Ning Liu, and Robert Lee. "Polyethersulfone (PES)/cellulose acetate butyrate (CAB) composite hollow fiber membranes for BTEX separation from produced water." RSC Advances 5, no. 128 (2015): 105692–98. http://dx.doi.org/10.1039/c5ra21185a.

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Polyethersulfone (PES)/cellulose acetate butyrate (CAB) composite hollow fiber membranes were prepared by dry-jet wet-spinning for BTEX (benzene, toluene, ethylbenzene and xylene) separation from oilfield produced water.
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Shi, Jie, Di Jia, Bo Wen Cheng, and Wei Min Kang. "The Effect of Electrospinning Parameters on Mophology of PAN/PU Composite Nanofibers." Advanced Materials Research 332-334 (September 2011): 1343–46. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.1343.

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The PAN/PU nanofiber membrane was prepared by twin-jet electrospinning. By changing the spinning voltage, solidification distance and jet velocity, the effects of each parameter on the fiber morphology could be analyzed. The diameter of the fiber was examined by scanning electron microscopy. The result showed that the excellent product could be got under such experimental conditions, which were 10%PAN and 10%PU solution, 25KV voltage, 15cm solidification distance with the jet velocity of 0.8ml/h and 1.3ml/h.
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Liu, Liqi, Lei Chen, Zuming Hu, Junrong Yu, Jing-Zhu, Jinliang Sun, and Musu Ren. "Fabrication of the Colored PMIA Fibers by Wet Spinning: Effect of Spinning Parameters on the Coagulation Process." Journal of Engineered Fibers and Fabrics 9, no. 1 (March 2014): 155892501400900. http://dx.doi.org/10.1177/155892501400900116.

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The poly (m-phenylene isophthalamide) (PMIA) fiber, which can be prepared by wet spinning, is a kind of aromatic polyamide fiber. The spinning parameters could influence the performance and structure of the colored PMIA fiber such as the diffusion coefficient and coagulation bath. In this study, the PMIA spinning solutions doped with Color Inde purple 120 were first commixed in a pressurizer and then spun into a coagulation bath under a pressure about 0.3 MPa. In the coagulation bath, the pure or dope-dyed PMIA fibers were prepared by wet spinning at 323 K, and then the as-spun fibers were extracted by an ultrasonic oscillation method. The effects of jet stretch ratio, temperature, and concentration of the coagulation bath on the ratio of diffusion coefficient of solvent to coagulator were analyzed during the spinning process of dope-dyed PMIA fibers. The properties and structures of the colored PMIA fibers were characterized by SEM. Finally the most optimized spinning technology of the dope-dyed PMIA fiber was obtained and the dope-dyed PMIA fibers were successfully fabricated through wet spinning.
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Yin, Xue Min, Li Zhang, Xin Jun Zhu, Hua Ping Wang, and Yu Mei Zhang. "Phase Structure of Acrylic Fibers Processed with Ionic Liquid as Solvent." Advanced Materials Research 560-561 (August 2012): 41–45. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.41.

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The acrylic fibers were prepared by dry-jet wet spinning technology from polyacrylinitrile (PAN) /1-butyl-3-methylimidazolium chloride ([BMIM]Cl) solution for the investigation of phase structure changing with drawing in boiling water. The DMA, WAXD and stress-strain measurements were conducted. It is shown that only a single Tg was observed from DMA and the paracrystalline structure was shown from WAXD. Although the the crystallinity and orientation increased with increasing draw ratio, the high crystallinity of the pre-drawn fiber indicates that the ordered structure was formed in the pre-drawn fiber by the high pre-drawn ratio (3.5) during the dry-jet wet spinning from high-viscosity PAN/[BMIM]Cl solution. It is also found that the initial modulus, ultimate elongation and tenacity increased with the increase of draw ratio.
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