Limitation of the validity period of disposable masks

There are many advantages disadvantages of disposable masks. For example, this kind of mask has filtering effect on common poisonous gases, it has a good hand feeling. It is very soft to touch won't hurt our skin. It has good elasticity. Even after stretching, it is easy to restore. Moreover, the price of disposable masks is relatively low, which is often used in some large factories mines. However, we should pay attention to the limitation of the validity period of disposable masks, to mention repeated use.

How long is the disposable mask valid? Disposable masks can be reused. They need to be replaced after 6-8 hours of use. the two sides of the mask can be used alternately, because the outer layer of the mask often accumulates a lot of dust, bacteria other dirt in the outside air, the inner layer blocks the bacteria saliva exhaled. If the two sides are used alternately, some dirt other substances on the outer layer will be directly attached to the mouth nose, which will enter the human body through the respiratory tract affect the human body Health.