At present, dust masks are divided into three grades. The protection efficiency of KN90, KN95 and KN100 is 90%, 95% and 99.97% respectively. Among them, KN100 grade dust masks can effectively prevent pneumoconiosis.
1. Applicable environment of KN100
KN products are mainly suitable for the environment of non-oily particles, and have a filtering effect of 99.97% for particles with a diameter greater than 0.075mm. They are suitable for mines, cement plants, steelmaking, ironmaking and other industries, and are economical products that are widely applicable.
2. The protective characteristics of KN100 filter element
1. The filter cotton with multi-layer design can block particles of different particle sizes layer by layer.
The number of layers of filter cotton in the KN100 dust mask is relatively scientific. The outer layer is a barrier layer, which can block large particles and protect the inner filter cotton. The adsorption layer is responsible for absorbing a large amount of respirable particulate matter. The barrier layer is responsible for blocking ultrafine particles. The division of labor and cooperation of each layer of filter cotton can achieve a filtration efficiency of 99.97% for fine particles. A pair of filter cotton can provide more than 120-480 hours of effective respiratory protection for dust workers, and the second and third layers of the used filter cotton group can still keep white.
2. Electrostatic adsorption can effectively intercept particles.
Each layer of cotton filter material of the KN100 dust mask has a different mechanism, which can contain and block dust to different degrees. It adopts the principle of electrostatic adsorption and contains static electricity, so that the KN100 dust mask can effectively absorb ultrafine particles. Multi-layer electrostatic adsorption enables the KN100 dust mask to achieve effective protection in high dust environments and prevent pneumoconiosis.
3. Double slices, double-sided design, smoother breathing
Due to the high breathing resistance of the mask, the size and material are not suitable, and there is a peculiar smell, it is easy for employees to give up wearing it because of discomfort. In order to effectively protect workers, the KN100 mask adopts double-piece, double-sided, large-area double filter elements, which greatly improves the dust holding capacity and makes breathing smooth. The stepped air valve design of the KN100 dust mask makes the breathing resistance lower and is convenient for workers to wear at work.
4. Are activated carbon masks required in all workplaces?
This is incorrect thinking. If there is no organic gas, odor, or toxic dust in the workplace, in order to save money, it is not recommended to use a mask with an activated carbon filter layer.
The main function of the activated carbon filter layer is to adsorb organic gases, odors and toxic dust, rather than to filter general dust. Therefore, if the workplace contains only dust pollution, please use a dust mask that meets national standards . The price is economical and the breathing is comfortable. You don't need to spend too much money to buy activated carbon masks with higher prices and greater breathing resistance. Of course, if your workplace contains organic gases, foul odors, and toxic dust, you must use an activated carbon mask.