What's the difference between disposable masks and medical masks?

1, different properties: disposable masks are made of two layers of 28g non-woven fabrics. Most medical masks are made of one or more layers of non-woven fabrics.

2. Different processes: The main production processes of medical masks include melt blowing, spunbonding, hot air or acupuncture. It has the functions of resisting liquid and filtering particles and bacteria, and is a medical protective textile. The disposable three-layer mask is made of two layers of non-woven fabrics specially used for medical care, with a layer of filter spray cloth in the middle, which can filter and prevent bacteria up to 99%, and is welded by ultrasonic wave.

3. Different effects: Under the condition that the air velocity is (85 2) L/min, the filtration efficiency of the medical mask for sodium chloride aerosol with aerodynamic median diameter of (0.24 0.06) micron is not less than 95%, that is, it conforms to n 95 (or FFP2) and above. Diameter that will hinder air transmission

Extended data:

Precautions:

1, pay attention to the validity period of medical masks: the validity period of general medical surgical masks is three years, and the validity period of medical protective masks is five years. Once the mask expires, the filtering efficiency and protective performance of the filter material will be reduced, and the use of expired medical masks can not effectively block the infection of viruses and germs. Be sure to confirm the production date and expiration date before using the medical mask. ?

2. Be sure to wash your hands before and after wearing the medical mask: Wash your hands before wearing the mask, avoid touching the inner surface of the mask, and try to avoid touching the mask during use to prevent the protection from decreasing. Try not to touch the outside of the mask when you take it off, so as not to get bacteria on your hands. Be sure to wash your hands after you take it off.

3, masks should not be worn for a long time: some people may wear medical masks all day to prevent infection, but this will make the nasal mucosa fragile, lose the original physiological function of the nasal cavity, and reduce the resistance, so it is not necessary to wear masks in places with low population density and poor ventilation.

4. Fold the medical mask and put it in the self-sealing bag when not in use: It is not recommended to put the mask directly in the pocket or bag, which will easily cause secondary pollution of the medical mask. Be sure to fold it and put it in a clean self-sealing bag, and the side that touches the nose and mouth will be folded inward.

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