What is the difference between medical and non-medical masks in N95 masks?

The main difference is that the outer surface of medical masks is hydrophobically treated. Medical surgical masks clearly set the requirements of “synthetic blood penetration”. The parameter index of “surface moisture resistance” clarifies the protective effect of medical protective masks on blood and body fluids. . In layman’s terms, it is like water droplets falling on a lotus leaf. The liquid cannot be saturated on the surface of the mask. This can block the medical staff from frequent contact with alcohol, blood, etc., and prevent it from quickly penetrating; rather than the medical type N95 Masks will not undergo this special treatment.

The most protective function of the N95 protective mask is the filter layer. The filter layer is made of polypropylene melt-blown microfiber electret material. The outer surface of the mask has not been treated with hydrophobic treatment. The structure of the material will be destroyed when it comes in contact with water, alcohol, etc. , So that the filtering effect is greatly reduced. What’s more, the blood often contains bacteria, viruses, etc. The application scenario of the hospital determines that the medical staff will be exposed to the patient’s blood environment with a high probability. Therefore, the hydrophobic treatment of the surface of the medical mask is essential. However, ordinary people are unlikely to encounter alcohol and blood. As long as they change their masks regularly, it will be harmless without this treatment on the outside.