What Is A KN95 Mask?

KN95 is a standard mask in my country, and it is a type of mask with particulate filtering power in our country. Since the new coronavirus is mainly transmitted through droplets, N95 means that it can filter 95% of the particulate matter in the air. The filtration of KN95 is better than that of ordinary masks and medical masks. If ranked according to the priority of the wearer's own maintenance function, the KN95 Mask has high maintenance ability.

Detailed structure of KN95 mask

Medical masks and protective masks are non-woven materials, composed of directional or random fibers, generally multi-layer structure, mainly composed of three layers, generally called SMS structure. At present, the number of high-rise buildings in China is 5 layers, namely SMMMS, KN95 masks with higher protection level are 5 layers, 2 layers of meltblown cloth + 3 layers of non-woven fabrics, which can filter more than 95% of fine particles.

How long can KN95 masks be used for?

Compared with other types of masks, the price of KN95 masks is relatively high. Many friends have questions, can KN95 masks be reused? No problem at all.

Some researchers have conducted relevant research on the maintenance power and wearing time of KN95 masks. The results showed that the KN95 mask was worn for 2 days, the filtration power remained above 95%, and the breathing resistance did not change much. After 3 days, the filtration power dropped to 94.7%.

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