PTFE mask membrane filtration material prepared by biaxial stretching method, with a spider web like microporous structure on the surface, and a three-dimensional structure

It has very complex structural changes such as network connectivity, curved channels, and staggered channels, thus possessing excellent surface and deep filtration performance. The filtration efficiency of bacteria, novel coronavirus and PM2.5 particles in the air can reach more than 95%, fully meeting the filtration standard of N95/KN95 respirators. The filter material used as the M-layer of traditional masks is melt blown non-woven fabric, which is made of polypropylene and interwoven with fine fibers. The average diameter of the fibers is about 2um, and the material passes through the electret surface

Make it carry static electricity to enhance the adsorption energy of dust and particulate matter. Dachuan plastic PTFE composite mask film has much better performance than melt blown non-woven fabric.