From the perspective of the filter layer, medical surgical masks are melt blown filter layers, and disposable masks are non woven fabrics. The meltblown filter layer is obviously more dense, and the material is very similar to paper but not paper, which is a bit like DuPont paper. The non woven filter layer of the disposable mask is the same as the non woven fabric of the inner and outer layers, that is, the three-layer non woven fabric, and even the filter layer is thinner than the inner and outer layers.
Although the meltblown filter layer of medical surgical masks is light and thin, it is relatively dense, but the filter layer is relatively fragile. Stretching and repeatedly rubbing the filter layer by hand will damage the filter layer. Therefore, in order to ensure that the filtering effect of the mask cannot be cleaned, it is recommended to discard it after use.
German masks comply with the EU EN14683 standard (ranking from weak to strong, Type I, IR, II, IIR). I just use I for hay fever and the common cold. To prevent influenza and the current new type of coronavirus pneumonia, I think I can buy Class II, with a filtration rate of more than 98%, which is better against liquids and aerosols (particulate matter) than the previous ones. You can buy IIR (this level is recommended by the WHO) when you go to epidemic areas, fever clinics in hospitals and other places with more viruses. The German for surgical masks is Maske OP, or Mundschutz OP.
In general, the anti-virus effect of medical surgical masks is relatively obvious, and there are specific filtering standards. Each manufacturer of disposable masks has its own standards, which may be uneven. So there is still a big difference between the two. However, given the current situation, the gas masks are all out of stock. It is no longer easy to have a mask. It is better to wear it than not to wear it. Disposable masks can also prevent liquid penetration and serve the purpose of preventing droplet infection. Wearing a good mask is better than wearing a good mask (meaning no matter how good a mask is, it won’t work if you don’t wear it in the correct way)
I believe that after reading the above answer, many friends have tried to dissect the masks at home. Many people ask me why the disposable mask in my hand has a meltblown cloth? Can the disposable medical masks (non-medical surgical masks) like yours work? Where can I buy reliable masks? How do you see the authenticity of the mask? To be honest, the mask standards of different manufacturers are different. Please be optimistic about the standards before buying. If there is really something wrong, you are welcome to point out.
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