2. Non-woven dust masks can be cleaned and reused, which can save costs. The common dust masks on the market are all melt-blown non-woven materials, and the material is mostly polypropylene, usually called PP melt-blown. Cloth, is an ultra-fine electrostatic fiber cloth that can capture dust. After the dust is captured by the ultra-fine electrostatic fiber cloth, it is not easy to be detached by cleaning, and washing with water will also destroy the electrostatic dust-absorbing ability. Therefore, the non-woven mask cannot be cleaned and needs to be discarded after use. In order to save costs, some companies require employees to clean and reuse masks after a period of use. Some mask manufacturers have also developed a so-called "high-efficiency and washable" dust-proof filter with a layer of melt-blown non-woven fabric sandwiched between traditional gauze masks. Masks are wrong and dangerous behavior.
3. As long as you wear a dust mask, you will not get pneumoconiosis First of all, the dust mask has a certain filtering capacity. If it exceeds its filtering capacity, it cannot be dustproof. Therefore, for some places with high dust concentration, engineering transformation should be carried out to control the dust, and the dust concentration should be reduced to below the allowable concentration, and then consider choosing to wear a dust mask.
Secondly, the choice of dust mask should choose a higher protection level, and the dust mask cannot be dustproof if it is not worn correctly. This includes not only wearing it according to the instruction manual, wearing it in the correct and appropriate position every time (no leakage), but also insisting on wearing it during dust exposure operations, and timely discovering the signs of failure of the mask and replacing it in time.
