With the continuous development of society and the continuous improvement of science and technology, however, the pollution of the natural environment is becoming more and more serious. People will wear masks as long as they go out. At present, people wear more medical masks. So how do medical masks prevent dust? Here is a brief introduction to the majority of users, hoping to help you.

Generally speaking, in order to protect the body effectively, there is a certain requirement for the specification of the mask. It must cover the mouth and nose of people, so that people can breathe freely. Generally speaking, the size of the adult medical mask is 18*9, while the size of the child medical mask is 15*9.

Medical masks are made of non-woven fabrics. They are made of some fibers without knitting. They are often made into two-layer masks, three-layer mouth masks and multi-layer activated carbon masks.

Medical respirator can effectively prevent fine dust in the air, especially respiratory dust below 2.5 micron, because this particle size of dust can directly enter the alveoli, causing great harm to the human body. The principle of medical masks is that when dust passes through gauze, it will pass through barriers layer by layer, and these dust will be adsorbed on the gauze, so that fresh air enters the respiratory system. So it is necessary to wear a mask in haze weather.