科研之友
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摘要
Melt-blown die usually consists of two components: the coat-hanger feed distributor and the spinneret plate with a series of orifices. In this paper, fluid flow in double melt-blown die was simulated using the three-dimensional finite element method. The fluid flow inside the melt-blown die was analyzed, particularly the flow near the joint point of the double melt-blown die and the entrance of the orifice. Velocity distribution at the outlet of the die was also analyzed through a comparison with the fluid flow in the double melt-blown coat-hanger feed distributor. The results show that the convergence flow around the entrance of the orifice can improve the velocity distribution at the die's outlet to a certain extent. The improved uniformity of the velocity distribution at the outlet of the double melt-blown die proves the feasibility of using side-by-side melt-blown die to fabricate wider uniform melt-blown webs.
