How to distinguish the front and back of disposable masks

2021/03/07

 

Does wearing a disposable mask have an impact? The answer is yes. What is the impact?


         We know that there are three layers of disposable masks, the outermost layer is spunbonded, which has a waterproof effect; the middle layer is meltblown cloth, which has a filtering effect, can filter dust particles, viruses, etc.; the innermost layer is spunbonded, which has a moisture absorption function. If we wear the mask upside down, the outermost layer will lose its waterproof effect. Close contact with people will absorb the spit of others; and our own breath will also condense inside the mask due to the tarp.

        So how do we distinguish the front and back of the mask? First, explain the distinction between the upper and lower sides. The side with the nose bridge wire is the upper side and the side without the nose bridge wire is the bottom. Then the side where the nose bridge wire stands out is the outer layer, which is in contact with the air; the side where the nose bridge wire is not visible is the inner layer, which fits the face, so don't wear the mask on the front and back.