High Efficiency Covering Technology for Covered Yarn Production: Controlling the Spandex Yarn Draw Ratio

Feng, Pei; Liu, Dashuang; Yang, Chong

doi:10.5604/01.3001.0014.3794

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…The elastane draw ratio, denoted as Factor A, was encoded by DES and presented in Table 2. The selection of the draw ratios for the elastane lament was determined in accordance with industry practice and relevant literature (Feng et al, 2020). Additionally, DES assigned different yarn properties as distinct responses, labeled as Y 1 , Y 2 , Y 3 , Y 4 and Y 5, as shown in Table 3.…”

Section: Experimental Design and Data Analysismentioning

confidence: 99%

Employing Response Surface Methodology in the Production of Elastic Jute Yarn Suitable for Stretch-denim Applications

Uddin,

Begum,

Uddin

2024

Preprint

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Stretch-denim is a unique, trendy, and sturdy fabric produced with coarser cotton yarns requiring high consumption of cotton fiber. With the increasing expenses of cotton and the adverse ecological effects linked to its cultivation, it became necessary to investigate an alternative fiber. Jute, despite being a low-cost, biodegradable and sustainable natural cellulosic fiber, is often underappreciated in the textile industry primarily because of its inherent stiffness and poor aesthetics. Herein, a groundbreaking jute/elastane core-spun yarn was produced, for the very first time, to develop fabrics like denim with comfortable stretch. To accurately predict the elastane draw ratio, an I-optimal design, which is a part of the response surface methodology, was employed using design expert software. The study involved nine experimental runs to produce 276 tex core-spun yarns at different elastane draw ratios ranging from 1.4 to 4.6. Surface response models were developed and found statistically significant for mass variation, imperfection, hairiness, tenacity, and elongation of yarn, with p-values below 0.05. Using the optimized formulation obtained from the response models, the optimum elastane draw ratio was determined to be 3.42, which was then used to produce optimized core-spun yarn. The quality parameters of produced yarn closely matched the predicted values, suggesting the effectiveness of the response model in navigating and predicting the characteristics of jute core-spun yarn. The newly developed elastic jute yarn is expected to widen the applications of cellulosic jute yarns where elasticity is necessary, especially in stretch-textile like denim products by replacing the cotton counterpart.

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Section: Experimental Design and Data Analysismentioning

confidence: 99%

Employing Response Surface Methodology in the Production of Elastic Jute Yarn Suitable for Stretch-denim Applications

Uddin,

Begum,

Uddin

2024

Preprint

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“…C o vered yarn is outer cover yarn that is wrapped on inner corn yarn in a spiral winding manner to form a new yarn with better performance [1][2]. The covered yarn produced by this new technology generally possesses a higher strength, richer appearance, and fl uffi er structure with less hairiness [3][4][5].…”

Section: Forewordmentioning

confidence: 99%

Development of a Small, Covered Yarn Prototype

Shi

Yan

Cao

et al. 2022

AUTEX Research Journal

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The rapid development of the textile industry has led to the demand for more advanced textile equipment because the current covering yarn machines are large and expensive and have a large physical footprint. Also, the current technology is unsuitable for most laboratory research and small factory proofing. In this paper, the principle of forming covered yarn is analyzed and simplified in three systems: the unwinding system, the covering system, and the winding system. A small sample of low volume and better flexibility is developed, the production process and primary structure of the covered yarn prototype are introduced, and the covering effect of the small prototype is debugged and analyzed.

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“…The cross-wound package is widely used in double twisters, covering machines, and other equipment. 10 However, friction exists between the groove drum and the wound package in process of the formation, which increases the hairiness of the wound package in the winding process 11 and affects the yarn quality and the production environment of the equipment. Besides, there are problems such as yarn folding and hard edge in the process of the cross-wound package. The precision wound package means that each yarn layer is closely arranged in the same direction, which is used in the processes of re-winding, and doubling.…”

mentioning

confidence: 99%

Active tension control of the conical winding system based on the neural network control algorithm of radial-basis functions

Zhang

Wang

Wu³

et al. 2023

Textile Research Journal

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A conical winding formation and tension control system was proposed in the doubling operation based on the yarn guide mode of a single spindle in this study. Conical winding formation realized the radial unwinding of wound package. An overfeed mechanism was introduced to achieve closed-loop control of yarn tension. The overfeed wheel was driven by a brushless Direct Current motor. The tension control system combined a Proportion Integration Differentiation controller with a radial-basis-function neural network, whose purpose was to meet the control requirements of the brushless DC motor. This system consisted of three main steps: Firstly, the radial-basis-function neural network was used to identify the system online. Secondly, the gradient descent method was used to adjust the node weight, center vector, and baseband width. Finally, incremental PID parameters online were adjusted according to the identified Jacobian information. A mathematical model of a control system was established in Matrix Laboratory. An experimental platform was designed for doubling winder to compare the control effects of Radial-basis-function-PID with traditional PID. The simulation results showed that the RBF-PID had a smaller overshoot of yarn tension, shorter adjustment time, and smaller steady-state error compared with the traditional PID controller in doubling operation by simulating the mathematical model. Experimental results showed the RBF-PID controller had good performance and stability and could be applied to yarns with different average linear velocity, yarn counts and strands . The yarn tension fluctuation will not exceed ±3% of the target value when the experimental materials and the cone angles are unchanged.

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High Efficiency Covering Technology for Covered Yarn Production: Controlling the Spandex Yarn Draw Ratio

Cited by 5 publications

References 11 publications

Employing Response Surface Methodology in the Production of Elastic Jute Yarn Suitable for Stretch-denim Applications

Employing Response Surface Methodology in the Production of Elastic Jute Yarn Suitable for Stretch-denim Applications

Development of a Small, Covered Yarn Prototype

Active tension control of the conical winding system based on the neural network control algorithm of radial-basis functions

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