Protective masks are respiratory protection equipment. The main objects of protection are particulate matter, including dust, fog, smoke and microorganisms. The particles that can penetrate into the lungs of the human body are very small and are harmful to the health of various types of pneumoconiosis, and they are also the main protection objects of protective masks.

The quality of the filter material determines the filter efficiency. The main material of most protective masks is non-woven fabric, which achieves filter protection function through fiber filtration. At present, most of the market protection models use the "melt blown nonwoven + electrostatic adsorption" method to intercept PM2.5 particles and dust. The blocking effect of meltblown nonwovens on viruses and PM2.5 exceeds the capabilities of other nonwovens. With its three-dimensional structural design, it forms a sealed space with the face, forcing the contaminated air to be inhaled and filtered by the human body for breathing, and the filtration rate of particulate matter is usually maintained above 95%. Electrostatic standing polar technology, electret melt-blown non-woven materials can capture more oppositely charged particles through electrostatic adsorption mechanism, thereby improving the filtering efficiency of melt-blown non-woven materials and strengthening the protection of the mask. The principle of fiber filter dust mainly includes electrostatic adsorption, gravity deposition, inertial deposition, diffusion deposition and direct capture.

According to experts, high-quality melt-blown non-woven materials can produce 300,000 masks per ton of melt-blown non-woven materials. This kind of melt-blown non-woven materials produces protective masks, and the protective effect can basically reach B level or above, but the current market Some manufacturers buy inferior meltblown non-woven fabrics, produce and sell inferior protective masks, disrupting market order.

The protective effect of the mask is not only related to the filtering efficiency of the mask material, but also highly related to the sealing (leakage rate) of the human face. The seal of the respiratory protective equipment and the face are directly affected by the protective effect. Choose the filter specifications of the mask, and also consider the face fit of the mask. A good protective mask. The air outside the mask cannot easily enter the mask from the edge and is inhaled by the human body because the face is not sealed and the mask is not worn. Consumer experience surveys show that in general, headbands have better sealing effects than earbands, and cup-shaped seals are better than foldable seals. Hygiene manufacturers say that adding some gaskets to the face contact, and connecting the nose to an aluminum nose strip, etc. Guarantee the problem of facing the mask.

For more information about meltblown nonwovens, please consult us.Email: long@guideco.cn