The core filtering part of the mask is the melt-blown non-woven fabric layer in the middle.
According to the filtration requirements, it is divided into single layer or multi-layer. Currently, the highest in China is three-layer melt-blown non-woven fabric.
Different from the spunbond method, the melt-blown method used in this layer uses hot-melt traction of PP fibers to build a micron and nanoscale network structure with multiple curved channels.
The kn95 mask filter membrane is prepared using a unique biaxial stretching technology, which can ensure complete retention of bacteria and other impurities while having a large flux.
When used for gas filtration, it can intercept 100% of various phages, bacteria and particles above 0.02um.
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