English
In environments such as polishing, cutting, woodworking cutting, and building material handling, the concentration of suspended solid particles in the air will significantly increase, and long-term inhalation is detrimental to the respiratory system. When choosing respiratory protective equipment, "whether it can filter" is only one aspect, "whether it is suitable for this working condition and whether it can be worn" is equally important. Fangdun's current product line roughly covers three types of usage needs.
One is a replaceable half face mask. The cover adopts a semi face structure that fits the face, paired with individually replaceable filter cotton. Cotton filters have good adsorption and barrier effects on fine dust generated during operations; The cover can be reused, and the filter cotton should be replaced according to the duration of use and blockage. The cost of consumables for long-term use is relatively controllable, suitable for workstations with high dust concentration and long continuous operation time.
The second is a disposable cup shaped mask. The cup-shaped structure leaves breathing space at the mouth and nose, making it less likely to collapse and stick to the mouth when worn; The filter material contains an electrostatic layer that captures small particles through electrostatic adsorption while maintaining relatively low respiratory resistance. This type of mask is lightweight, ready to use, suitable for inspections, short-term operations, or as a daily backup.
The third is multi-layer composite filter material. From a cross-sectional view, the filter material consists of multiple layers such as surface cloth, meltblown layer, and electrostatic layer: the outer layer blocks larger particles and splashes, the middle layer meltblown material plays the main filtering role, and the electrostatic layer enhances the ability to capture fine particles. Multi layer division of labor brings a larger dust capacity - it can accommodate more dust during the usage cycle, the increase in respiratory resistance is relatively gentle, and the timing of replacement is also easier to judge.
A few tips for use: The protective effect largely depends on the fit of the face, and it is recommended to perform an air tightness test when wearing beard or with special facial contours; When the breathing becomes noticeably heavy, the filter material becomes dirty or deformed, it should be replaced in a timely manner; Mask products mainly filter particulate matter and cannot protect against toxic gases and vapors, nor are they suitable for oxygen deficient environments. When making a purchase, please check the product's execution standards and the filtration efficiency level on the testing report, and match the model with the actual dust properties and concentration.
