Variation of false twist on spinning process stability and resultant yarn properties in a modified ring spinning frame

Yin, Rong; Tao, Xiaoming; Xu, Bingang

doi:10.1177/0040517517712099

Cited by 10 publications

(8 citation statements)

References 26 publications

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“…With the increasing demand for novel features or improving qualities, many modifications based on ring spinning have been developed, such as sirofil, 21,22 core-spinning, 23,24 Nu-Torque, [25][26][27] etc. For producing composite yarns such as cotton/spandex or wool/ spandex yarns, the constitutive relation is typically nonlinear, 28 and large deformation 29 takes place during the spinning process.…”

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confidence: 99%

Mathematical modeling and numerical simulation of nonlinearly elastic yarn in ring spinning

Yin

2020

Textile Research Journal

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In this paper, yarn dynamic behavior in the ring spinning system has been studied. A new model has been proposed by considering nonlinear elastic yarn. Equations of motion were derived by Newton’s second law and resolved by the finite difference method. Some results were given and relationships among models of inextensible yarn, linear elastic yarn, and nonlinearly elastic yarn were discussed. Experiments were conducted to evaluate the accuracy of the proposed model in terms of yarn tension and balloon profile and a good agreement has been made between the predicted data and experimental results.

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confidence: 99%

Mathematical modeling and numerical simulation of nonlinearly elastic yarn in ring spinning

Yin

2020

Textile Research Journal

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“…Traditional spinning can be roughly divided into open‐end spinning and nonopen‐end spinning. [ 84 ] The principle of open‐end spinning is to form an open end by producing a breaking point at the continuous feeding sliver, and the true twist of sliver can be obtained by rotating the free end with the twister. The open‐end spinning methods include ring spinning, rotor spinning, friction spinning, eddy current spinning, electrostatic spinning, twist spinning, and pinching spinning.…”

Section: General Design Principles Of Yarnsmentioning

confidence: 99%

Recent Progress on Yarn‐Based Electronics: From Material and Device Design to Multifunctional Applications

Jiao

Guo

et al. 2023

Adv Elect Materials

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Over the last decade, the rapid development of wearable electronics has generated renewed interest in textiles. The integration of advanced nanotechnology and microelectronics with well‐established textile production processes has resulted in textile electronics, that are lightweight, flexible, breathable, and conformable, which broadens the applications of electronic products. The hierarchical textile structure, ranging from a single fiber to twisted yarns and various fabrics, is suitable for constructing multifunctional flexible devices. In particular, yarn, which bridges between fiber and fabric, is advantageous owing to its easy integration into wearable formats via weaving, knitting, or braiding. However, because of the dearth of effective interdisciplinary communication between researchers of electronic and textile engineering, fabricating yarn‐based devices with superior mechanical properties and versatile electronic functionality is difficult. Therefore, this review provides an overview of yarn‐based electronics, followed by a systematical summary of recent progress in yarns with respect to material and device design, multifunctional integration, and applications in wearable devices, including sensors, actuators, stealth, batteries, and nanogenerators. Furthermore, the major challenges and future developments in this field are discussed.

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“…This is why a false twisting device was added to impart false twist in the spinning triangle zone, that is, in the weakest point of the yarn path located immediately after the front rollers of the drafting system, to increase process stability and yarn quality. [71][72][73][74][75][76][77][78][79][80][81][82][83] Yilmaz has studied the characteristic properties of the yarn by integrating a false twisting device comprised of air nozzles between the drafting system and yarn guide to reduce the yarn hairiness up to an angular spindle speed of 10,000 rpm in the conventional ring spinning process (Figure 20). 71 The objective of integrating the pre-twisting device was to bind the projected fibers onto the yarn body by the swirling airflow in the nozzle.…”

Section: Multi-balloon (Or Spinhole) Technologymentioning

confidence: 99%

A critical review on recent developments and solutions in the high-speed ring spinning process

Abdkader,

Hossain

2023

Textile Research Journal

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Twist plays an important role in textile technology, particularly in the production of staple yarn structures. Due to the higher yarn quality and flexibility of the process, most short staple fiber yarns are produced in the ring spinning process in comparison to other high-speed spinning processes, such as rotor or air jet spinning. To impart twist in the yarn, the ring/traveler system, rotor and air jet nozzle are used in the ring, rotor and air jet spinning processes respectively. However, the productivity of the ring spinning process is limited significantly due to the frictional heat generated between the ring and traveler, especially at higher angular spindle speeds, which is crucial for the spinning of man-made fibers. This paper aims to describe the recent developments and solutions for increasing productivity in the ring spinning process in a systemic way. To reduce the friction, different topologies and surface modifications in the ring/traveler system were made to increase the angular spindle speed of maximum 23,000 rpm. To eliminate the friction, the twisting element was made of an air bearing or magnetically elevated rings were developed by replacing the ring/traveler system completely, thus permitting a higher angular spindle speed of up to 50,000 rpm. Further approaches deal with cap, loop and nova spinning or Nu-Torque technology to reduce yarn tension or residual torque in the yarn, respectively. The results of the presented work reveal the potential of different developments, especially in the field of twisting system, so that the productivity of ring spinning can be increased drastically.

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Variation of false twist on spinning process stability and resultant yarn properties in a modified ring spinning frame

Cited by 10 publications

References 26 publications

Mathematical modeling and numerical simulation of nonlinearly elastic yarn in ring spinning

Mathematical modeling and numerical simulation of nonlinearly elastic yarn in ring spinning

Recent Progress on Yarn‐Based Electronics: From Material and Device Design to Multifunctional Applications

A critical review on recent developments and solutions in the high-speed ring spinning process

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