As long as PTFE medical mask filter material is added to the mask, it can effectively block small particles in the air and even some bacteria that are invisible to the human eye.
PTFE mask film is also called polytetrafluoroethylene film. It has a three-dimensional mesh structure, no through holes, and has a high porosity, with the opening rate generally between 80% and 95%.
Furthermore, the filtration principle of this membrane is surface filtration, with low filtration resistance, which can block harmful gases in the air from the outside and ensure that they are not inhaled by the human body.
Controlling the pore size of this membrane to between 0.2 and 3 μm can effectively trap fine dust with extremely small diameters.
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