What is the material of the kn95 mask? Generally, masks are made of non-woven materials, and all of their raw materials are polypropylene. KN95 masks are no exception. It is an executive standard for the production of masks. The production materials are also non-woven fabrics and the raw materials are also polypropylene. There are no other special materials. , It’s just a few more layers of filters than ordinary masks.
Common medical masks
are mainly composed of three layers of non-woven fabrics: the inner layer (hygroscopic layer) is ordinary non-woven fabric; the outer layer (water-blocking layer) is a non-woven fabric with waterproof treatment, which is mainly used to prevent others from spraying. Liquid droplets; the middle filter layer (core filter layer) is made of electret-treated polypropylene meltblown non-woven fabric, generally referred to as SMS structure (S means spunbond layer, M means meltblown layer), change In other words, the mask should be at least 3 layers, that is, 2 layers of S and 1 layer of M. The KN95 mask with a fairly high level of protection is a 5-layer mask made of polypropylene non-woven fabric SMMMS (2 layers of S and 3 layers of M) that can filter more than 95% of fine particles.