Protective Mask (FFP2 NR) Manufacturers introduces how to wear masks:

1. 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 and cause infection. Therefore, officers and soldiers must standardize the wearing of masks. When wearing the mask, first unfold the arc reserved layer of the mask, fix the mask on the face with ear straps, completely wrap the mouth, nose, and chin, and then firmly pinch the metal strip above the bridge of the nose to make it close to the bridge of the nose. Adjust the airtightness of the chin. If necessary, the lanyard can be knotted from the back of the head to improve the tightness. Avoid touching the outside of the mask with your hands during the entire wearing process.

2. Distinguish the pros and cons
The disposable medical masks that everyone wears are divided into three layers, the outermost layer is a water-blocking layer, the middle is a filter layer, and the inner layer is a moisture-absorbing layer. The hygroscopic layer can absorb the moist gas exhaled by the mouth and nose to keep the mask dry. If the mask is worn backward, the breath exhaled from the mouth and nose cannot be effectively absorbed, and the mask is prone to dampness and loses its protective effect. Before wearing the mask, the nose clip side of the mask should be facing up and the dark side facing out. If there is no difference in the color of the mask, it can be judged according to the folds of the mask, and the folds are downward to the outside.

3. Replace in time
Under normal circumstances, disposable medical masks and medical-surgical masks are for limited use, and the cumulative use does not exceed 8 hours; the use of masks by occupational exposure personnel does not exceed 4 hours. After the use time of the mask reaches the upper limit, it cannot continue to be used. The mask should be replaced in time if the following situations occur: the mask is damaged or damaged; the mask is contaminated (such as blood stains or droplets); it has been used in an isolation ward or in contact with patients; the mask is damp; there is a peculiar smell in the mask; respiratory resistance Significant increase; the mask cannot be closely attached to the face.