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The airtightness of medical protective masks and haze masks

by:Copper Plus     2021-06-16
The airtightness of medical protective masks and haze masks As air pollution becomes more and more serious, haze weather occurs in many parts of the country, and people wear anti-smog masks to travel. However, smoke masks must have good airtightness, so what is the importance of airtightness? The following editor of disposable masks will give users a brief introduction. There are many factors that affect the effectiveness of masks to prevent smog, including the air tightness of masks, high-quality filter materials, and wearing methods. One of the important factors is whether the air tightness of the mask is good. Filtration efficiency is one of the most critical technical indicators of masks, but the test of copper mask filtration efficiency is based on the assumption of sealing. For example, during the test, N95 masks can block 95% of particles. But if there is no seal and harmful particles pass through other places, the data in the standard will be meaningless. Airtightness of medical protective masks and haze masks Anti-haze masks on the market have many defects in airtightness design. For example, if the edges around the copper mask are not well sealed, the gas can easily enter the system directly without entering through the filter membrane. In particular, the bridge of the nose is convex relative to the face, so it is easy to form large gaps on both sides of the bridge of the nose when wearing a mask. Although most masks now have aluminum strips on the bridge of the nose for shaping and sealing, it is difficult to achieve the desired effect. This means that even if businesses claim that they have adopted advanced filter membranes and achieved high standards of filtration efficiency, it is difficult to ensure that 100% of the gas passes through the filter membrane during actual use of the copper mask, and a considerable amount of smoke still cannot Enter the respiratory system through the mask filter membrane. In this way, a large number of PM2.5 particles can enter into the alveoli, then enter the capillaries through the alveolar wall, and then enter the entire blood circulatory system, which will seriously affect health over time.
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