Abstract
Die configuration is one of the most important factors that determine the polymer jet attenuation during melt blowing. To find the optimum slot angle, we investigated the effects of sharp die slot angles (60°, 50°, 40°) on the polymer jet attenuation experimentally and numerically. A model which incorporated the air-polymer coupling effect was built based on phase field method to investigate the die performance. In the experiment, sharp dies with different slot angles were fabricated and adopted for producing melt-blown nonwovens. The SEM and filter efficiency measurement, and numerical analysis demonstrated that the 60° sharp die has the best performance in polymer jet attenuation.
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Acknowledgement
This work is supported by the National Natural Science Foundation of China (11702113), the Jiaxing Project of Science and Technology (2022AY10002), the Open Project Program of Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province (MTC-2022-02), the China Postdoctoral Science Foundation (2020M671594), and Natural Science Foundation of Colleges in Jiangsu Province (19KJB540002).
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Hao, X., Jiang, G., Tao, J. et al. Experimental and Simulation Investigation on the Effect of Slot Angle on the Flush Sharp Die Performance during Melt Blowing. Fibers Polym 23, 2725–2731 (2022). https://doi.org/10.1007/s12221-022-0175-6
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DOI: https://doi.org/10.1007/s12221-022-0175-6