The level of the dust blocking efficiency of the mask is based on its blocking efficiency for fine dust, especially for respiratory dust below 2.5 microns. Because the dust of this size can directly enter the alveoli, it has the greatest impact on human health. Gauze masks, the principle of dust suppression is mechanical filtration, that is, when the dust hits the gauze, it passes through layers of barriers and blocks some large particles of dust in the sand cloth. For some fine dust, especially the dust smaller than 2.5 microns, it will pass through the mesh of the gauze and enter the respiratory system. Dust masks, consisting of filter material activated carbon fiber felt pads or non-woven fabrics, those breathable dusts smaller than 2.5 microns are blocked during the process of passing through this filter material, and play the role of filtering air.
Post time: Apr-16-2020