The reason why melt blown cloth has higher filtration efficiency is because it adds electrostatic electret technology in the production process, so that melt blown cloth has the function of electrostatic adsorption in addition to fiber filtration in the usual sense. Filtering and adsorbing bacteria and viruses, different electret processes will have relatively large differences in filtration performance and electrostatic durability. Therefore, the electrostatic electret process is very important and directly related to the filtration efficiency of melt blown cloth.
Electrostatic electret processes mainly include electrospinning, corona charging, conflict electrification, thermal polarization, low-energy electron beam bombardment, pure water jetting, etc., because the materials are composed of different electrostatic electret processes The nature of the electret is also quite different, and there is a difference in the improvement of filtering function and the durability of static electricity.
Water electret melt blown cloth technology originally came from the United States. Because the melt blown cloth made of melt blown cloth has better filtration power stability, many domestic manufacturers have begun to use water electret to produce melt blown cloth.
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