The initial resistance of the medium temperature coated dust removal bag is determined by the breathability of the bag itself, and the resistance during operation is many times greater than the initial resistance. The running resistance depends on the smoothness of the filter material surface, the cleaning effect, etc. Generally, it is desirable for the bag to have a higher air permeability and lower resistance while ensuring the same filtration efficiency, as this can save a lot of energy. In dust collectors that use air flow back blowing for dust cleaning, when using air flow of the same pressure and air volume for dust cleaning, using fabric with high air permeability as the filter bag has better dust cleaning effect than using fabric with low air permeability. Therefore, while ensuring high filtration accuracy of the filter material, how to improve the breathability and surface smoothness of the bag to reduce dust adhesion and reduce operating resistance is the first research topic that filter material manufacturers should study. The surface resin coated smooth finishing needle punched filter felt bag developed by Qingyuan Environmental Protection has a permeability that is more than 50% higher than that of ordinary calendered finishing filter materials, and the surface smoothness is smoother than that of calendered finishing combined with smoothness.

Guangxi medium temperature coated dust bag Lanzhou medium temperature coated dust bag