Studies of JetRing Spinning Part I: Reducing Yarn Hairiness with the JetRing

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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A Study on Physical Properties of Microfilament Composite Yarns

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501601100310 ◽

2016 ◽

Vol 11 (3) ◽

pp. 155892501601100 ◽

Cited By ~ 5

Author(s):

Esin Sarioğlu ◽

Osman Babaarslan

Keyword(s):

Tensile Properties ◽

Textile Industry ◽

Ring Spinning ◽

Twist Factor ◽

Statistical Effect ◽

Spun Yarn ◽

Spun Yarns ◽

Yarn Count ◽

Ring Spun Yarn ◽

Sheath Material

In the textile industry, composite yarns with multifilament cores are used to impart strength. There are various spinning systems to produce composite core-spun yarns. In this study, to determine the effects of filament fineness on yarn characteristics of composite yarns, polyester filaments with medium, fine and micro fiber linear densities were used as the core portion and cotton fiber was used as the sheath material. Yarn samples were manufactured using a modified ring spinning system with four different yarn counts and constant twist factor (ae). The effect of filament linear density on yarn tensile properties, unevenness and imperfections was determined. Yarn evenness and tensile properties were compared with 100% cotton ring spun yarn and to each other. When relative amount of core increases, it was observed that composite yarns had improved tenacity and elongation compared to 100% cotton ring spun yarn. Although filament fineness was found to have a significant effect on the CVm % properties, there was no statistical effect on imperfections other than yarn count parameter.

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Air and Ring Combination in Tandem Spinning

Textile Research Journal ◽

10.1177/004051759706700310 ◽

1997 ◽

Vol 67 (3) ◽

pp. 217-223 ◽

Cited By ~ 16

Author(s):

A. P. S. Sawhney ◽

L. B. Kimmel

Keyword(s):

Spindle Speed ◽

Optimum Level ◽

Ring Spinning ◽

Air Jet ◽

Yarn Twist ◽

Spun Yarn ◽

Spun Yarns ◽

Ring Spun Yarn ◽

Twist Level ◽

Air Nozzle

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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Determination of Optimum Twist Equation for the Long Staple Combed Cotton Ring-Spun Yarn

Fibers ◽

10.3390/fib8090059 ◽

2020 ◽

Vol 8 (9) ◽

pp. 59

Author(s):

Dunja Šajn Gorjanc ◽

Neža Sukič

Keyword(s):

Ring Spinning ◽

Elongation At Break ◽

Yarn Strength ◽

Yarn Twist ◽

Spun Yarn ◽

Spun Yarns ◽

Ring Spun Yarn ◽

Yarn Hairiness ◽

Spinning Mill

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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Effect of Some Navels on Properties of Cotton/Nylon66 Blend (1 : 1) Rotor Spun Yarn and Wrapper Formation: A Comparison between Rotor and Ring Spun Yarn

Journal of Textiles ◽

10.1155/2013/262635 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Babak Yadollah Roudbari ◽

Safdar Eskandarnejad

Keyword(s):

Ring Spinning ◽

Rotor Spinning ◽

Yarn Strength ◽

Ring Yarn ◽

Spun Yarn ◽

Ring Spun Yarn ◽

Rotor Spun Yarn ◽

Yarn Hairiness ◽

Military Uniform ◽

Test Result

Use of nylon/cotton blend yarn in military uniform is common and due to advantages in its fabric in comparison to 100% cotton fabrics, capabilities of military uniforms have been improved. In this study the effects of navel type on properties of (50%-50%) nylon/cotton blend yarn and wrapper formation were investigated and compared with similar ring spun yarn. Rotor spun yarn was produced on a single head laboratory rotor spinning machine with four navels (smooth, spiral, 3 grooved, and 4 grooved) and ring yarn was produced on a zinser 319 ring spinning machine. Test result showed that navel type has a significant effect on yarn strength and strength of smooth navel yarn was maximum. Elongation of a 100% cotton rotor spun yarn is more than similar ring yarn, but it was not observed in cotton/nylon blend. Yarn irregularity and imperfections varied significantly with navel type and for rotor yarns were more than the ring yarn. Navel type had significant effect on yarn hairiness but it didnot have an effect on yarn abrasion significantly.

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Intelligent manufacturing of color blended yarn: Color matching algorithm and manufacturing process through computer numerically controlled ring spinning system

Journal of Engineered Fibers and Fabrics ◽

10.1177/15589250211006539 ◽

2021 ◽

Vol 16 ◽

pp. 155892502110065

Author(s):

Peng Cui ◽

Yuan Xue ◽

Yuexing Liu ◽

Xianqiang Sun

Keyword(s):

Intelligent Manufacturing ◽

Prediction Algorithm ◽

Ring Spinning ◽

Blended Yarn ◽

Spun Yarn ◽

Computer Numerically Controlled ◽

Ring Spun Yarn ◽

High Production ◽

Color Prediction ◽

Textile Products

Yarn-dyed textiles complement digital printing textiles, which hold promise for high production and environmentally friendly energy efficiencies. However, the complicated structures of color-blended yarns lead to unpredictable colors in textile products and become a roadblock to developing nonpollution textile products. In the present work, we propose a framework of intelligent manufacturing of color blended yarn by combining the color prediction algorithm with a self-developed computer numerically controlled (CNC) ring spinning system. The S-N model is used for the prediction of the color blending effect of the ring-spun yarn. The optimized blending ratios of ring-spun yarn are obtained based on the proposed linear model of parameter W. Subsequently, the CNC ring-spinning frame is used to manufacture color-blended yarns, which can configure the constituent fibers in such a way that different sections of yarn exhibit different colors.

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Reducing yarn hairiness in ring spinning by an agent-aided system

Textile Research Journal ◽

10.1177/0040517519835769 ◽

2019 ◽

Vol 89 (21-22) ◽

pp. 4438-4451 ◽

Cited By ~ 1

Author(s):

Peiying Li ◽

Mingrui Guo ◽

Fengxin Sun ◽

Weidong Gao

Keyword(s):

Textile Industry ◽

Speed Ratio ◽

Rotating Speed ◽

Comprehensive Properties ◽

Spun Yarn ◽

Spun Yarns ◽

Ring Spun Yarn ◽

Yarn Hairiness ◽

Yarn Tenacity

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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Optimization of Break Draft, Pin Spacer and Rubber Cots Hardness to Enhance the Quality of Ring Spun Yarn Using Factorial Design

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501801300209 ◽

2018 ◽

Vol 13 (2) ◽

pp. 155892501801300 ◽

Cited By ~ 1

Author(s):

Furqan Khurshid ◽

Sarmad Aslam ◽

Usman Ali ◽

Amir Abbas ◽

Talha Ali Hamdani ◽

...

Keyword(s):

Quality Parameters ◽

Ring Spinning ◽

Technological Parameters ◽

Fiber Assembly ◽

Yarn Quality ◽

Spun Yarn ◽

Ring Spun Yarn ◽

Spinning Triangle ◽

The Individual

The aim of the present work is to optimize the drafting parameters for ring spinning by using full factorial (23) experimental design. Three drafting parameters of ring spinning each at two levels were chosen for this study. These technological parameters were break draft, size of pin spacer and hardness of rubber cots. It was found from statistical analysis that pin spacer size has a significant effect on yarn unevenness (U %), imperfection index (IPI), hairiness (H) and yarn strength (CLSP) compared to the other two chosen factors. These yarn quality parameters were improved by increasing the spacer size. The increase in spacer size reduces the cohesive forces among the fibers during drafting. The pin between the cradle and the top front roller transfer the individual fibers from the drafted fiber assembly to the spinning triangle without any stretching or accumulation. This yields a more integrated structure and the quality of yarn is improved.

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