The filter material of FFP2 mask is mainly divided into four layers, namely two layers of non-woven cloth + one layer of dissolved spray cloth + one layer of needled cotton.
The material of the lens mask is made of plastic PP non-woven cloth. Generally, filter paper is added between the three layers of the mask to improve the filtering effect of the non-woven mask.
One is made of pure cotton absorbent gauze or non-woven cloth material with filter paper in the middle, so as to improve the filtering effect of non-woven cloth mask.