Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : March 11, 2020
In the present paper, we investigated the filtration efficiency of polymeric nanofibers mass-produced by modified melt blowing and flash spinning methods. First, the filtration performance of the fiber was experimentally tested by varying the following parameters—fiber thicknesses, filling rate, and fiber diameter. And then, the CFD flow-analyzing software was used to simulate the pressure loss and flow resistivity. Furthermore, a three-direction physical model was proposed and used to calculate the gap size of fibers with different diameters but equal filling rate under the assumption of fibers which always have uniform distribution in 3-dimension. As a result, it can be confirmed that the tried produced filter shows very excellent filtration ability and the investigated data can be used for making nonwoven fabrics that can then be set as a standard for producing high-performance filters and face masks.
