How do medical masks prevent dust

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Generally speaking, in order to make masks provide effective protection to the body, there are certain requirements for the specifications of masks. It must cover the mouth and nose of people so that people can breathe freely. Generally speaking, the size of adult medical masks is large. It is 18*9, and the size of children's medical mask is 15*9.

Medical masks are made of non-woven fabrics. This material does not need to be woven. It is made by bonding some fibers. It is often made into 2-layer masks, 3-layer mouth layers, and multi-layer activated carbon masks.

Medical masks can effectively prevent fine dust in the air, especially for respirable dust below 2.5 microns, because the dust of this particle size can directly enter the alveoli, which has a great impact on human health. The principle of use of medical masks is that when dust passes through the gauze, it will pass through a layer of barriers, and the dust will be absorbed on the gauze, so that fresh air can enter the respiratory system.