Swirling Diffused Air Flow and Its Effect on Helical Fiber Motion in Swirl-Die Melt Blowing 


Vol. 22,  No. 6, pp. 1594-1600, Jun.  2021
10.1007/s12221-021-0809-0


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  Abstract

In melt blowing, high-velocity air impinges upon a polymer stream and attenuates it into micro-fibrous materials. The structure of the melt-blown die controls the airflow field and determines the process of fiber formation. This work focused on exploring the air swirling diffusion in a particular swirl-die melt blowing. The air swirling diffusion was analyzed by measuring the lateral velocity (vr), and the lateral twisting velocity (vs) by using single- and dual-wire probe hot-wire anemometer. Results showed that the vr had a diffusion boundary, while the distribution of the vs located out of the diffusion boundary of vr. The fiber paths in the swirl-die melt blowing, which was captured by high-speed camera, showed that the cone angle of the fiber path was consistent with the cone angle of vr-diffusion boundary. However, most of the twisting velocity (vs) located out of the region of fiber path, resulting in that the fiber helical motion was initiated just at a critical zposition, rather than in the region further away from the die. This work shows that energy-wasting of vs exists during swirl-die melt blowing, and a more optimized structure of this kind of die should be found.

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  Cite this article

[IEEE Style]

S. D. A. F. a. I. E. o. H. F. M. i. S. M. Blowing, "Swirling Diffused Air Flow and Its Effect on Helical Fiber Motion in Swirl-Die Melt Blowing," Fibers and Polymers, vol. 22, no. 6, pp. 1594-1600, 2021. DOI: 10.1007/s12221-021-0809-0.

[ACM Style]

Swirling Diffused Air Flow and Its Effect on Helical Fiber Motion in Swirl-Die Melt Blowing. 2021. Swirling Diffused Air Flow and Its Effect on Helical Fiber Motion in Swirl-Die Melt Blowing. Fibers and Polymers, 22, 6, (2021), 1594-1600. DOI: 10.1007/s12221-021-0809-0.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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