The planar mask is designed to cover the nose and mouth of a wearer easily and comfortably. A pair of ear hooking portions are formed on the two sides of the mask body in an extending mode and used for being hooked on the ears of the wearer.
The mask is of a three-layer structure in a stacked mode and the three-layer structure comprises a polypropylene fiber spunbonded non-woven fabric outer layer, a superfine fiber electret melt-blown non-woven fabric middle layer and a polypropylene fiber spunbonded non-woven fabric inner layer in sequence from outside to inside.
Planar mask is efficient in filtering PM 2.5 and has the advantages of being high infiltration rate and low in choked flow with prominent obstruction and capturing capability for the PM 2.5
