Many good friends ask on the official website which type of protective masks to use in haze weather has obvious effects. In fact, as long as the anti-smog masks meet the regulations, they are effective. Today, the labor insurance network technology has sorted out some types of protective masks that have poor anti-smog effects. I hope to help you choose anti-smog masks faster from the negative side. (1) Ordinary cold and warm protective mask This type of protective copper mask
is usually composed of several layers of pure cotton cloth with cotton wadding inside. This type of protective mask usually only has the effect of protecting against cold and warmth, and can isolate larger particles of dust, but basically has no safety protection effect on inhalable particles. Therefore, this type of protective copper mask is usually only used for short-term safety protection against sand and dust weather, and cannot be used for a long time in heavy pollution such as haze weather. In addition, because this type of protective mask is relatively common and the price is low, you should also pay attention to whether there is black heart cotton and other situations when purchasing. Therefore, when purchasing this type of protective mask, you should choose to go to a formal large-scale shopping mall or pharmacy as much as possible. (2) Disposable medical masks According to the specifications and main technical indicators of various types of medical masks, this type of protective masks are usually used by medical staff and related staff to protect against airborne respiratory infectious diseases. The protection level of medical masks is higher than that of ordinary cold and warm protective masks. It can meet the basic safety protection of medical staff or other related personnel for some blood, body fluids and splashes. It can also filter virus aerosols and harmful dust. It can also be used for safety protection between the wearer of the protective mask and the patient based on sneezing and speaking through air droplets. In addition, this type of protective mask can also be used for disposable hygiene care in ordinary environments, or Isolate particles other than pathogenic microorganisms, such as pollen. Disposable medical masks are usually made of non-woven fabrics and polypropylene fiber meltblown materials. The main body is divided into three layers: outer, middle and inner. It is composed of a protective mask body and a tension band, and is equipped with an adjustable nose bridge. Splash-proof, filter-proof and moisture-proof effect. Protective masks are highly hydrophobic and breathable, comfortable to wear, and can block particles above PM4. However, they cannot achieve safety protection for PM2.5, so they are not suitable for wearing out in severely polluted weather. (3) Degreasing gauze masks. This type of protective masks are made of 12-24 layers of degreasing gauze. They are cheap, soft, cold and warm, breathable, and reusable. They are suitable for general health protection applications. . The barrier of the protective copper mask to fine particles is realized by layering gauze, but the blocking effect is weak. There is no standard in the national industry standards for this kind of protective masks to filter out fine particles. It is unrealistic to want to keep PM2.5 out of the door based on wearing this kind of protective masks. In addition, it should be noted that this type of protective mask should not be rubbed hard when cleaning, otherwise it will deform or damage the dust-proof gauze inside, which will affect its filtering effect of fine particles. The above is the introduction of the poor dust-proof effect of these types of protective masks for haze days by the editor of the labor insurance net. I hope it will help you to understand the anti-smog masks! Although the anti-smog masks are often worn Also pay attention to common problems, such as respiratory diseases or maternity, it is recommended to wear a protective mask with an exhalation valve, and it is best not to wear it for a long time. 225
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