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Can disposable 3-layer non-woven masks (non-medical) block the droplets?

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Non-medical disposable maskscan block some of the droplets, but they are not as effective as medical masks. The main reason is that medical masks have strict national standards.

The medical surgical mask looks very thin, but in fact it has three layers, from the outside to the inside are the waterproof layer, the filter layer, and the comfort layer. The comfort layer is a layer of non-woven fabric.The outer layer has a water blocking effect, which can prevent droplets from entering the mask to the inside; the middle layer has a filtering function, which can block particles larger than 5μm in the air, and the filtering effect is ≥90%; the inner layer near the mouth and nose is used to absorb moisture.

Medical surgical masks are generally used in high-demand environments such as medical clinics, laboratories, and operating rooms, and are masks worn by medical staff when working. The safety factor is relatively high, and the resistance to bacteria and viruses is strong.

Contact may also cause transmission. For example, if the patient covers his mouth and nose and coughs, his hands are contaminated with a large amount of virus. Holding the handrails in public places can cause transmission. Friends who go out often can take disposable hand sanitizer with them.



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