How To Wear A Mask

Standard wear

If there is a gap between the mask and the face when a person breathes, the airflow will flow to the gap, and the dust, droplets, aerosols, etc. attached to the virus can enter the body through the gap with the airflow, causing infection. 

Therefore, officers and soldiers should standardize the wearing of masks. When wearing a mask, first unfold the curved reserved layer of the mask, fix the mask on the face through the ear straps, completely cover the mouth, nose, and jaw, and then squeeze the metal strip above the bridge of the nose to make it close to the bridge of the nose, and finally Adjust the air tightness of the chin area. If necessary, the lanyard can be knotted from the back of the head for added security. During the whole wearing process, you should avoid touching the outside of the mask with your hands.

Distinguish front and back

The disposable medical masks everyone wears are divided into three layers, the outermost layer is the water blocking layer, the middle layer is the filter layer, and the inner layer is the moisture absorption layer. The moisture-absorbing layer can absorb the moist gas exhaled from the mouth and nose, keeping the mask dry. If the mask is worn backward, the gas exhaled from the mouth and nose cannot be effectively absorbed, and the mask is easy gets wet and loses its protective effect. Before wearing the mask, the nose clip side of the mask should be facing up, and the dark side should be facing out. If the mask has no color difference, it can be judged according to the folds of the mask, and the folds are downwards to the outside.

Replace in time

Under normal circumstances, disposable medical masks and medical / surgical masks are used for limited times, and the cumulative use does not exceed 8 hours; occupational exposure personnel uses masks for no more than 4 hours. After the use time of the mask reaches the upper limit, it cannot be used further. The mask should be replaced in time if the following conditions occur: the mask is damaged or damaged; the mask is contaminated (for example, stained with foreign bodies such as blood stains or droplets); it has been used in an isolation ward or has been in contact with patients; the mask is damp; there is a peculiar smell in the mask; breathing resistance Significant increase; the mask cannot fit closely with the face.