Study on airflow field and fiber motion with new melt blowing die

2019 ◽  
Vol 59 (6) ◽  
pp. 1182-1189 ◽  
Author(s):  
Wanli Han ◽  
Sheng Xie ◽  
Jing Shi ◽  
Xinhou Wang
Keyword(s):  
Melt Blowing ◽  
Fiber Motion ◽  
Airflow Field

Effect of position of the fiber transport channel on fiber motion in the high-speed rotor

2021 ◽  
pp. 004051752110018
Author(s):  
Rui Hua Yang ◽  
Chuang He ◽  
Bo Pan ◽  
Hongxiu Zhong ◽  
Cundong Xu
Keyword(s):  
High Speed ◽  
Channel Model ◽  
Three Dimensional ◽  
Discrete Phase Model ◽  
Transport Channel ◽  
Rotor Spinning ◽  
Fiber Motion ◽  
Discrete Phase ◽  
Airflow Field ◽  
Fiber Transport

The task of the fiber transport channel (FTC) is to transport the fibers from the carding roller to the rotor. Its geometric position in the spinning machine has a strong influence on the characteristics of the airflow field and the trajectory of the fiber motion in both the rotor and the FTC. In this paper, a three-dimensional pumping rotor spinning channel model was established using ANSYS-ICEM-CFD software with three different positions of the FTC (positions a–c). Further, the simulations of air distribution were performed using Fluent software. In addition, the discrete phase model was used to fit the fiber motion trajectory in the rotor. The simulation results showed that among the three types of FTC, position b is the optimal condition. The gradients of airflow velocity in the channel at position b were greater than those of the other two positions, which is conducive to straightening of the fiber.

scholarly journals Fiber Motion near the Collector during Melt Blowing: Part 2 — Fly Formation

2002 ◽  
Vol os-11 (3) ◽  
pp. 1558925002OS-01 ◽  
Author(s):  
Randall R. Bresee ◽  
Uzair A. Qureshi
Keyword(s):  
Processing Parameters ◽  
Experimental Measurements ◽  
Melt Blowing ◽  
Fiber Motion ◽  
On Line

On-line and off-line measurements were obtained to gain an understanding of fly production during multi-hole melt blowing at commercial speed. These measurements allowed us to describe the effects of common processing parameters on fly production and develop a model for fly formation that begins to account for experimental measurements.

Numerical approach to modeling fiber motion during melt blowing

2010 ◽  
Vol 119 (4) ◽  
pp. 2112-2123 ◽  
Author(s):  
Y. C. Zeng ◽  
Y. F. Sun ◽  
X. H. Wang
Keyword(s):  
Numerical Approach ◽  
Melt Blowing ◽  
Fiber Motion

Influence of Die Geometry on Fiber Motion and Fiber Attenuation in the Melt-Blowing Process

2014 ◽  
Vol 53 (32) ◽  
pp. 12866-12871 ◽  
Author(s):  
Sheng Xie ◽  
Yuansheng Zheng ◽  
Yongchun Zeng
Keyword(s):  
Melt Blowing ◽  
Die Geometry ◽  
Fiber Motion

Turbulence of melt-blowing airflow field: Comparison of a convergent jet and a typical free jet

2021 ◽  
Vol 33 (7) ◽  
pp. 075107
Author(s):  
Ying Yang ◽  
Hui Huang ◽  
Yongchun Zeng
Keyword(s):  
Melt Blowing ◽  
Free Jet ◽  
Airflow Field

Air Flow Field and Fiber Motion in a Swirl Die Melt-Blowing Process

2013 ◽  
Vol 690-693 ◽  
pp. 2861-2865
Author(s):  
Sheng Xie ◽  
Yuan Sheng Zheng ◽  
Yong Chun Zeng
Keyword(s):  
Flow Field ◽  
High Speed ◽  
Air Flow ◽  
High Speed Camera ◽  
Important Process ◽  
Melt Blowing ◽  
Spiral Motion ◽  
Fiber Motion ◽  
Fiber Path ◽  
The Relationship

Melt blowing is an important process for producing nanofibrous nonwovens. Compared to another technology for producing nanofibrous nonwovens, electrospinning, melt blowing applies high-speed air flow field to attenuate the extruded polymer jet. In this study, the air flow field of a swirl die melt-blowing process was simulated by CFD software, Fluent 6.3. The swirling air profile was shown. Meanwhile, a high-speed camera was used to capture the fiber path below a single-orifice melt-blowing swirl die. The spiral motion of the fiber was revealed. The relationship between the fiber path and the air flow field was discussed. This paper shows the relationship between the fiber path and the air flow field in a swirl die melt-blowing process.

Effect of slot end faces on the three-dimensional airflow field from the melt-blowing die

2020 ◽  
Vol 40 (7) ◽  
pp. 607-613
Author(s):  
Yudong Wang ◽  
Jianping Zhou
Keyword(s):  
Numerical Calculation ◽  
Flow Field ◽  
Field Distribution ◽  
Three Dimensional ◽  
Central Area ◽  
Computational Domain ◽  
Melt Blowing ◽  
Slot Die ◽  
Calculation Results ◽  
Airflow Field

AbstractIn order to investigate the effect of the slot ends of the melt-blowing die on the three-dimensional airflow field distribution and the fiber draft, the numerical calculation was carried out. The computational domain of the slot die was established with Gambit, and the flow field was calculated using FLUENT. Compared with the experimental data collected by a hot-wire anemometer, the numerical calculation results are credible. The results show that the slot end face has a certain influence on the three-dimensional flow field distribution under the melt-blowing die. The air velocity and temperature in the center region are quite different from those near the slot-end face. As the distance from the center of the flow field increases, the velocity and temperature on the spinning line begin to decrease. The velocity and temperature distributions of the spinning lines in the central area and nearby areas are almost the same; the temperature and velocity values on the spinning lines near the slot end are the lowest. The distribution characteristics of the three-dimensional airflow field could affect the uniformity of the fiber diameter and the meltblowing products.

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