The protective function of kn95 mask is based on three principles:
(1) Filter
Kn95 mask is made of material and woven in such a way that the gap of the mask is smaller than the virus volume and the virus is filtered out. The cotton gauze mask made of ordinary material mainly plays a protective role based on this principle, so its protective efficiency is relatively low.
(2) Adsorption
The electrostatic effect of the mask adsorbs the virus on the outer layer of the mask, such as adding an electrostatic filter layer.
(3) Kill
Kn95 mask material has sterilization function, such as dioxin photocatalyst, which directly kills the virus.
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