Precision Manufacturing of a Linear Fiber Assembly with Axially Varying Compositions and Structures by Using Computer Nu
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ISSN 1229-9197 (print version) ISSN 1875-0052 (electronic version)
Precision Manufacturing of a Linear Fiber Assembly with Axially Varying Compositions and Structures by Using Computer Numerically Controlled Ring Spinning Peng Cui1,2, Yuan Xue1*, and Weidong Gao1 1
Key Laboratory of Eco-Textiles, Jiangnan University, Wuxi 214021, Jiangsu, China Materials and Nanotechnology Program, North Dakota State University, ND 58102, USA (Received September 20, 2019; Revised February 20, 2020; Accepted March 3, 2020)
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Abstract: Ring spinning is an effective technology for forming multi-component spun yarns. There is an increasing need for multifunctional textiles with characteristics, such as antibacterial properties, UV protection, easy cleaning, and color alteration, which can be achieved via various physical and mechanical processing approaches, such as electrospinning, friction spinning, hollow spindle spinning, and ring spinning. In particular, ring spinning is based on the mechanical processing of fibers, and it is suitable for mass customized production systems. However, conventional ring spinning involves a fixed fiber blending ratio and yarn linear density, which limits its usefulness for fabricating multifunctional textiles due to the uncontrollable composite yarn structure. In the present work, we propose a new method for manufacturing a threecomponent spun yarn by combining a computer numerical control system with a ring spinning frame, which increases the flexibility of yarn production. The as-prepared composite yarns possess axially varying compositions and structures, which can be readily tuned by changing the feeding speeds of the back rollers, and these aspects can facilitate the fabrication of multifunctional textiles for mass production at a low cost. To the best of our knowledge, this is the first work to demonstrate the feasibility of fabricating a three-component spun yarn with tunable compositions and structures by employing a ring spinning frame. Keywords: CNC ring spinning machine, Linear fiber assembly, Spun yarn, Rollers, Lightweight product
production, the rovings are mechanically blended in a drafting unit of the spinning frame, in which the yarn structure is determined by the blending and drafting processes. Tuning the blending and drafting ratios changes the configurations as well as the physical properties of multicomponent spun yarns [12,24]. In general, multi-component spun yarns incorporate different types of fiber slivers with fixed blending ratios and linear densities [24]. However, such a geometrical configuration cannot satisfy a wide variety of purposes of multifunctional textiles. For example, in fashion and textiles, it is preferable to blend the fiber slivers with variable weight ratios to fabricate color altering fancy yarn [26]. In an electromagnetic shield fabric, it is essential to wrap a special effect thread around the ferromagnetic core thread to construct a system of solenoids, in which the special effect thread forms local thickenings [27] by changing the feeding speed
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