How to deal with expired medical masks?


The quality requirements of medical masks are relatively high. It is composed of two parts: the face of the mask and the tensioning belt. The face of the mask can be divided into three layers, the inner layer is ordinary sanitary gauze or non-woven fabric, the middle layer is ultra-fine polypropylene fiber meltblown material layer, and the outer layer is non-woven fabric or ultra-thin polypropylene meltblown material layer. The outer layer has an anti-droplet design, the middle layer is filtered, the inner layer absorbs moisture, and the mask is made of non-woven fabric. This mask is mainly used to protect doctors from droplets and splashes. Its particle filtration rate is only more than 30%, and the filtration rate of bacteria can reach more than 95%. This three-layer configuration makes the small virus filtration very good, and the material is not toxic. It is a very good medical protective mask.