Disposable masks have passed rigorous testing, especially the facial tightness test of disposable masks, which is to breathe hard by wearing the mask to see if air can leak from the edge of the mask. If there is no leakage from the edge Only disposable masks are qualified products, and the qualifications and other materials for disposable masks need to be complete.
For some fine dust, especially dust less than 5 microns, it will pass through the mesh of the gauze and enter the respiratory system. There are some existing dust masks, and the filter material is composed of fibers charged with static electricity. In the process of passing through the filter material, those respirable dusts smaller than 5 microns are attracted by static electricity and adsorbed on the filter material to capture fine dust. Really play a role in blocking dust. Disposable masks are less strong and durable than other masks. There are various types of dust masks for use conditions, and the selection must be based on different operating needs and operating conditions. Since dust masks cannot be washed with water, masks with fine fibers are easy to cause facial impact on the face seal and are not suitable for use.
