Which employees should pay attention to when using dust masks?

What should you watch out for when choosing a dust mask? The purpose of the mask is to effectively prevent dust from entering the respiratory tract. An effective dust mask must be able to prevent fine dust, especially for dust less than 5 microns into the respiratory tract, which must be a nationally recognized "dust mask." It should be noted that the general gauze mask is not dust-proof. Followed by the suitability, that is, masks and the face to adapt to the maximum guarantee that the air will not pass through the mask and the face of the mask without the mask into the respiratory tract, according to the instructions to wear correctly.

Of course, some people think that gauze masks can be used for dust protection and comfortable to wear. Dust masks belong to special labor protection articles, and the country has special standards for its quality. As early as in 2000, the former State Economic and Trade Commission stated in plain language that gauze masks should not be used as dust masks. Because gauze masks are harmful to the human body's largest dust below 5 μm, the dust blocking efficiency is only about 10%. Non-woven dust masks can be cleaned before use, which can save costs. In fact, the dust mask on the market, the filter material is meltblown non-woven material, polypropylene material, often referred to as PP melt-blown cloth, is an ultra-fine electrostatic fiber cloth, can capture dust. After the dust is trapped by the ultra-fine electrostatic fiber cloth, it is not easy to be separated due to cleaning, and the water washing also destroys the electrostatic dust suction ability. Therefore, the non-woven masks cannot be cleaned and should be discarded after use. In order to save costs, some companies require employees to use their masks for a period of time and then use them again. Some mask manufacturers have also developed so-called “high-efficiency washable” dust masks in which a layer of meltblown non-woven fabric is sandwiched between traditional gauze masks. It is all wrong and dangerous behavior.