From the dust-proof efficiency, the dust-proof efficiency of the mask is based on its barrier efficiency against fine dust, particularly respiratory dust of 2.5 microns or less. Since this particle size can directly enter the alveoli, it has the greatest impact on human health. The gauze mask, the dustproof principle is mechanical filtration, that is, when the dust impacts the gauze, the multi-layer barrier will block some large particles of dust in the abrasive cloth. Some fine dust, especially those less than 2.5 microns, passes through the gauze and enters the respiratory system. A dust mask consisting of a filter material, an activated carbon fiber mat or a non-woven fabric, through which the inhalable dust of less than 2.5 micrometers passes.
The design of the mask for preventing side leakage is a technical requirement to prevent air from being sucked through the gap between the mask and the face without filtering. The air, like water, flows where there is little resistance. When the shape of the mask is not close to the face, dangerous substances in the air can leak into the human respiratory tract. So even if you choose the best filter mask. It also does not protect your health. Many foreign regulations and standards stipulate that mask sealing tests should be performed on workers on a regular basis. The goal is to ensure that workers choose the right mask and wear it in the right steps.
Comfortable to wear, make workers willing to wear in the workplace, improve work efficiency. Currently, foreign maintenance-free masks do not need to be cleaned or replaced. When the dust is saturated or the mask is damaged, they will be discarded, which not only ensures the hygiene of the mask, but also saves the time and effort of the worker to maintain the mask. In addition, many masks are arched to ensure a perfect fit to the face and the comfortable space of the nose and mouth.