In the environment of industrial production, there are many respiratory hazards. These hazards are often not visible, some workers require prolonged exposure to these hazards, if not to take protective measures will cause disease. So how to carry on the protection? Protection methods of project management and individual protection. Project management is the method of choice, but sometimes because of capital, technology, raw materials and other constraints, can not reach the standard, then the need for personal protection, also known as the wearing of masks.
Mask option has three big principles. The first is the masks of dust collection efficiency. A mask of dust collection efficiency is to fine dust, especially to 5 microns below the respirable dust barrier efficiency standard. Because of the particle size of the dust can be entered directly into the alveoli, on human health impact of maximum. General gauze mask, the dust collection principle is a mechanical filter, that is when the dust fly into gauze, after - layers of barrier, some large granular dust barrier in sand cloth. However, some of the fine dust, especially the dust of less than 5 microns, and does not play a role in blocking. Now abroad, some dust masks, the filtering material by filling the permanent electrostatic fiber composition, those less than 5 microns of respirable dust in the filter through the process, by electrostatic attraction and adsorbed on the filter, true to the dust blocking effect.
Second major principles for the selection of masks masks and face shape sealing degree. Because the air is like water, where resistance to where to flow. You have such experience, when water flows encountered stones will detour. The air is so, when the mask shape and face is not closed, the air of danger will never close to leak into, enter the human respiratory tract. So, even if you choose the filter again good masks to protect your health. Now many foreign laws and regulations, standards, workers should be regular mask adhesion test. The purpose is to guarantee the workers choose suitable masks and masks in the right way.
Third major principles for the selection of mask is comfortable to wear. The requirements include respiratory resistance to be small, light weight, wear health, convenient maintenance. The workers will be happy in the workplace to wear. There is now a maintenance free type mask, without cleaning or replacement parts, when the dust blocking saturated or mask worn can be directly discarded, such as ensuring the masks of health but also eliminates the workers maintain masks of time and energy. But many masks are used arch design, can not only ensure and facial shape is well sealed and can over the nose and mouth to retain certain space, comfortable to wear.
If you choose a mask followed the above three principles, that you will be able to choose a valid comfort dust masks.
