Study on the model of semi-open-end twist in compact spinning with lattice apron

Compact spinning has emerged as a contemporary spinning technology that has garnered significant attention due to its capacity to produce yarns with excellent properties. The strategy is a variation of conventional ring spinning that seeks to get rid of the spinning triangle while improving the uniformity, strength, and hairiness of the yarn. In compact spinning, fiber condensation is achieved by negative pressure airflow, which compresses the fibers and reduces their thickness. This results in a higher packing density of the fibers, leading to stronger and more uniform yarns. In this article, we provide a comprehensive overview of compact spinning technology, covering its principle, fiber condensation method, and the types of machines used. The quality of the yarn is greatly influenced by various systems and parameters such as lattice apron, air suction slot geometry, airflow fields, and twist mechanism employed in compact spinning. We present a compendium of the various developments established in studies on compact spinning, which could serve as a platform for developing new techniques in compact spinning for the production of high-quality yarns with low economic burdens. This review discusses compact spinning, two main systems, machines, influential parameters/peripherals, disadvantages, and the future prospects of compact spinning. Additionally, we provide a summary of previous research on compact spinning, highlighting its benefits and advantages over traditional ring spinning. Furthermore, we discuss the impact of guiding devices and lattice apron type on yarn quality. We also explore the potential of three-dimensional (3D) printing technology in enhancing the performance and design of compact spinning machines.

Section: Component Of Compact Spinning Machinementioning

confidence: 99%

“…Various machine manufacturers have utilized many techniques to compress the fibers arising out from the front roller. Leading manufacturers of pneumatic 103 compact spinning machines include Rieter, Sussen, and Zinser (Figure 5). 92,107,108 Suessen: Elite spinning…”

Section: Compact Spinning Machinementioning

confidence: 99%

Compact spinning: a comprehensive review of the revolution in yarn manufacturing

Saty,

Sarkodie,

Abdalla

et al. 2024

“…The effects of various spinning parameters on the additional twist of the fiber strands were investigated by Fu et al. 22 The effect of fiber condensing in the condensing zone is connected with the movement of the fiber in the airflow field. However, airflow is one of the main reasons for increasing the energy consumption of pneumatic compact spinning.…”

mentioning

confidence: 99%

Numerical and experimental approach towards an energy-efficient compact spinning system

Saty

Akankwasa

Wang

2021

Self Cite

Compact spinning with a lattice apron has recently become a very attractive approach for pneumatic compact yarn production spinning systems. One of the main challenges with use of this method is the high negative pressure that leads to high energy consumption. In response to this challenge, we present a numerical and experimental investigation of the effects of a three-dimensional (3D) printed guiding device on the airflow characteristics and yarn properties. Initially, the 3D numerical model of the compact spinning system was set up based on the real geometrical dimensions. Secondly, the 3D prototype was developed, simulated, and analyzed using Solidworks and Ansys. Ultimately, the design, which exhibited low negative pressure along the model domain, was adopted and then 3D printed to enable further experimental investigation. Airflow analysis results illustrated that when using the guiding device with low negative pressure, the active area of negative pressure was increased. This was due to the existence and the special design of the guiding device that prevented the decrease of the negative pressure with atmospheric pressure. This increased the transverse condensing force, which was beneficial for twisting the free-end fiber around the fiber bundle. Experimental results revealed that the three yarns spun with the guiding device achieved significant energy saving when the guiding device was used. Moreover, these yarns spun with the guiding device had better strength, hairiness, and evenness than those spun without a guiding device. The model developed can be further improved and utilized for commercial purposes, as it significantly reduces energy costs while improving yarn properties.

“…Vahidkhah and Abdollahi 13 and Maaˆtouk et al 14 and studied the mechanical properties and configurational changes of fiber during the twisting process based on the method of numerical simulation, which revealed significant results that matched the experimental data. Fu et al 15 proposed a dynamic model to evaluate the additional twist of the fiber strands and simulated the individual fiber trajectory in the suction slot in compact spinning; meanwhile, a related spinning experiment was carried out to verify the rationality of the simulation. Subsequently, Akankwasa et al 16,17 also used the finite element method to simulate the configurational change of the fiber under the airflow field during the rotor spinning process.…”

mentioning

confidence: 99%

“…Fu et al. 15 proposed a dynamic model to evaluate the additional twist of the fiber strands and simulated the individual fiber trajectory in the suction slot in compact spinning; meanwhile, a related spinning experiment was carried out to verify the rationality of the simulation. Subsequently, Akankwasa et al.…”

mentioning

confidence: 99%

Simulation and analysis of the twist propagation process of polyester staple yarn on the fiber scale

Wang

Zhang

Ding

et al. 2020

Self Cite

The twisting process of the sliver is an important part of the yarn spinning process, but this process has not been fully characterized on the fiber scale. Herein, based on the assumption that fibers are randomly distributed in the sliver, we analyzed the simulation twisting process of the sliver model on the fiber scale. The mathematical model of the twisting process of the sliver is set up and the non-free-end twisting process is simulated using the finite element software ABAQUS®. The simulation process clearly shows the configuration changes of the sliver caused with the increase of the twist. We also divided the twisting process into 11 stages and obtained a three-dimensional model of staple yarn. Then, the relationship curve between the ring-spun yarn fineness and the number of fibers in the cross-section of the ring-spun yarn was established by spinning the yarns of different counts of 20, 25, 30, 35, 40, 45, 50, 55, 60 and 65 Ne, and the fineness of the simulated yarn was calculated. The accuracy of the simulated yarn was verified by comparing the weight of the simulated yarn and the ring-spun yarn. The model established can be used to predict yarn properties for different purposes and can also be further utilized to study other phenomena in ring-spinning technology.