PTFE material itself is not toxic, but it will produce toxic substances after burning and decomposing. It is recommended that all mask companies clearly indicate on the outer packaging of masks produced using kn95 mask filter film that the masks contain PTFE ingredients, and it is strictly prohibited to put the masks in contact with open flames.
Common masks on the market mainly consist of a 3-layer structure. The outer layer is usually made of polypropylene spunbond nonwoven fabric (PP Spunbond non-woven fabric), which has good water-repellent function, can prevent a small amount of liquid and droplets from entering the inside of the mask and has a good supporting effect; the middle layer is usually made of polypropylene melt-blown non-woven fabric (melt-blown filter cloth) ), this layer is the main blocking and filtering effect of the mask on small bacteria and viruses.
kn95 mask filter membrane is a purely physical barrier and does not rely on static electricity. When the user inhales, the pore size is 100~200 nanometers. PM2.5 to PM0.3 will be blocked on the surface of the mask through physical screening. With the strong self-lubricating characteristics of the polytetrafluoroethylene material, every time you exhale, the PM2.5 to PM0.3 will be blocked on the surface of the mask. The particulate matter is pushed back into the environment repeatedly, without relying on electrostatic adsorption, and truly achieves a very good PM2.5 protection effect.
The kn95 mask filter membrane produced has strong hydrophobicity, chemical resistance, hydrophobicity and low wind resistance, and It can achieve high dust removal efficiency. For some small particles with a diameter of 0.1um-0.3um, the filtration level can reach H13-U16. In addition, biaxially stretched films can undoubtedly achieve very low emissions in intercepting various types of dust generated during the production process of enterprises, and are in compliance with current environmental protection standards. Interested parties can enter the store for consultation and purchase!
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