What is the difference between PTFE filter bag coated and non coated?

The difference between coated and non coated dust collector bags. There are many material classifications of dust collector bags, which can be divided into normal temperature, medium temperature and high temperature according to temperature; When we select the dust removal cloth bag, we should understand that the filter material of the dust removal cloth bag should be comprehensively considered according to the gas temperature, humidity, chemical characteristics, particle size, weight, shape, dust concentration, filtration speed, dust removal method, discharge concentration, working system of the bag filter and other factors. Brief introduction of film covered dust removal cloth bag: The cloth bag of film covered dust collector is compounded with a layer of polytetrafluoroethylene film on the surface of the filter material of the ordinary dust removal cloth bag. The surface is smooth and resistant to various chemicals. It can play the role of water, oil and static electricity. This layer of film plays the role of dust layer. Therefore, the dust removal cloth bag can obtain effective filtration effect in the early stage of use. The film covered structure is a unique three-dimensional network, which can effectively block the dust outside the dust removal cloth bag without the worry of pore blockage. The film covered dust removal cloth bag is more meticulous for dust filtration. Its service life is better than that of the ordinary dust removal cloth bag in both the initial dust filtration and the use process. The cloth bag of the film covered dust collector has very good dust removal characteristics. The dust layer can be removed every time the dust is removed. The interior of the filter material will not be blocked, and the porosity and mass density will not be changed. It can work under low pressure loss. The operating pressure of one kind of filter material loses the amount of dust left or carried on the upper and lower surface of the filter material after ash removal. The ash removal time is long, while the 729 filter material is softer than other filter materials, that is, it is easy to remove the ash. Performance characteristics of film coated dust removal cloth bag: 1. Close to zero emission, it can meet the most stringent environmental protection standards, and the dust removal efficiency of film coated dust removal cloth bag is high. 2. Good dust removal performance, can provide higher ventilation, or the film covered dust removal cloth bag can reduce the pressure difference. 3. Low voltage, high flux continuous operation. 4. The extension of filter bag life and the reduction of cleaning times reduce the equipment maintenance cost. 5. The reduction of investment and operation cost of film covered dust removal cloth bag makes users produce better economic benefits. 6. The prolongation of the service life of the dust removal cloth bag and the reduction of the cleaning times reduce the maintenance cost of the equipment. Brief introduction of non film covered dust removal cloth bag: The cloth bag of non film covered dust collector is made of ordinary cotton and hemp fiber or man-made fiber, which can filter ordinary dust. The common industrial dust removal cloth bag does not use the film coated dust removal cloth bag. It relies on the surface of the filter material to establish a dust layer for effective filtration. The establishment of effective filtration takes a long time, has large resistance and low efficiency. No interception, large loss, high back blowing pressure through the box, complex dust removal, high self energy consumption, short service life and large equipment area. When using membrane filter cloth, the dust cannot penetrate into the filter material, indicating that the surface is too thick and fine, and all the dust is deposited on the surface.