Are disposable medical masks effective in filtering haze?

Air pollution is particularly serious now. Especially in the cold winter, haze weather often occurs in many places. Smog poses a threat to human health. Therefore, many users wear masks when traveling. However, many users will ask whether disposable medical masks can filter smog. I hope Derun protective equipment manufacturers can give you a brief introduction to medical masks.

Disposable medical masks include ordinary medical masks, medical surgical masks and medical protective masks, among which medical protective masks have a higher level of protection. It is composed of 3 layers of materials, the inner layer is mostly non-woven fabric, the middle layer is ultra-fine polypropylene fiber meltblown material layer, and the outer layer is non-woven fabric or ultra-thin polypropylene meltblown material; virus aerosol or harmful dust has significant The filtering effect of the filter blocks the air filtration efficiency ≥95% in the non-oily particles.

Although this surface has good filtering capacity, it cannot be completely filtered. Because the haze not only contains non-oily particles such as dust, acid mist, coal dust, cement dust, microorganisms, but also oily particles such as oil fume, oil mist, asphalt fume, coke oven flue gas, and diesel engine exhaust. For oily particles and gaseous chemicals, medical protective masks cannot completely filter out.

It should be reminded that medical protective masks are usually used in medical environments and are not very suitable for ordinary people to wear in their daily lives. For example, N95 masks are usually used for occupational respiratory protection to block certain microbial particles, but due to their thick texture, they are not comfortable to wear.