Kn95 respirator is a kind of common protective respirator in our daily life. Its protective effect is good, which can effectively filter various viruses and bacteria and reduce virus infection. The kn95 mask also has a shelf life. It can't be used after the shelf life, and its protective effect will be greatly reduced.
Is the kn95 mask still usable after the expiration date
The kn95 mask cannot be used after the expiration date.
The static electricity in the protective layer of the kn95 mask will disappear after a long time, and the filtering effect will decline. Try not to wear expired kn95 masks. If the expiration time is not long, it can still be used as a normal mask. However, it is better to wear an expired mask produced by a regular manufacturer.
Can the kn95 mask still be used when it is expired and unopened
Expired masks cannot be used any more without being unpacked, because the protective effect is greatly reduced.
The mask is mainly used to protect the mouth and respiratory tract, prevent viruses, bacteria, dust, etc. from entering the human body, prevent infectious diseases, etc. The middle layer of the mask is generally polypropylene melt blown non-woven fabric treated by electret. If the mask expires, the adsorption of the middle layer will be greatly reduced, and the protection effect will also be greatly reduced. Therefore, it is not recommended to continue to use the mask. In addition, if the mask is not opened after expiration, bacteria and other pathogens may also breed. If used continuously, it will not only prevent infection, but also cause infection and endanger health.
Therefore, expired masks have not been unpacked, the quality has not been guaranteed, and the efficacy of protecting and isolating pathogens has lost. It cannot be used any more and should be discarded in time.
Precautions for wearing kn95 mask
1. Wash hands and disinfect before wearing the mask, or prevent hands from touching the inside of the mask during the whole process of wearing the mask, so as to reduce the possibility of the mask polluting the environment.
2. Distinguish the inside and outside, left and right of the protective mask.
3. N95 respirator can only protect the virus infection on the mask surface. If you squeeze the respirator with your hand, it will cause the virus infection to spread along with the droplets.
4. Try to make the protective mask fit the face. The simple experimental method is: after wearing the protective mask, breathe hard, and the gas cannot be exposed from the edge of the protective mask.
