can generally be divided into two categories, general masks and protective masks. General masks are mainly used for wind protection and warmth, and protective masks are mainly used for protection of various particles. According to the different protection objects, protective masks can be divided into disposable masks, daily protective masks, medical masks, industrial masks, and coal mine special masks.
Masks are made of many and varied materials. Masks that keep warm are generally made of cotton, velvet, cashmere and other materials; masks with particle protection mostly use non-woven fabrics as filter materials. In order to take into account the effects of warmth, beauty and protection, some manufacturers use fabrics of various colors to sandwich non-woven fabrics that play a filtering role in the mask.
As far as the material manufacturing and processing technology is concerned, each company has its own characteristics. As far as the production of filter materials is concerned, basically use melt blown or electrostatic spinning methods. Some manufacturers can use electret technology in filter materials. The additional charge can improve the adsorption capacity of the material without increasing the thickness and resistance of the material.