Why is the filtration efficiency of KN95 protective masks higher than that of ordinary masks?

In our daily lives, masks are an important protective tool when faced with various particles and pathogens suspended in the air. Under the current epidemic, KN95 protective masks have attracted much attention due to their high filtration efficiency. So, why is the filtration efficiency of KN95 protective masks higher than that of ordinary masks? Let’s find out.

We need to understand the design principles of KN95 protective masks. KN95 protective masks use multiple layers of filter material, including high-efficiency filter layers, usually fibers made by an electrospinning process. These fibers have the ability to electrostatically attract particles, making the mask more effective at filtering airborne particles and pathogens.

The filtration efficiency of KN95 protective masks is strictly regulated and standardized. KN95 protective masks are certified in accordance with Chinese national standard GB2626-2006, and their filtration efficiency reaches more than 95%. This means that under standard testing conditions, the mask is able to filter more than 95% of 0.3 micron particles, including bacteria, viruses and other particles.

The sealing performance of KN95 protective masks is also one of the important reasons for its high filtration efficiency. The mask is designed with better sealing properties, which can better fit the contours of the face and reduce the possibility of air permeating from the edges of the mask. This helps prevent airborne particles from entering the respiratory tract through the edges of the mask, providing more effective protection.

The materials and manufacturing process of KN95 protective masks are also one of the key factors affecting its filtration efficiency. The masks use high-quality filter materials and advanced manufacturing processes to ensure that the filter performance and quality of the masks are stable and reliable.

These factors make the KN95 protective mask a more reliable and effective protective tool, especially suitable for environments and scenarios that effectively filter particles and pathogens in the air.