Characteristics of PTFE coated filter material:
◆ surface filtration;
◆ Excellent chemical stability, corrosion resistance, and no aging;
◆Smooth surface, high peel strength, easy to clean,
◆Good ventilation performance,
◆High temperature resistance, excellent anti-condensation function, drowning;
◆High filtration efficiency, up to 99.99% (near zero emission)
◆ low running resistance, high filtering wind speed,
◆ Wide adaptability and low operating cost
The essential difference between the filter material and the ordinary filter material in the filtration principle:
Ordinary filter materials are traditional needle felts, woven filter materials, and the like. The working principle is the so-called “deep filtration” technology, that is, through the collection of filter fibers, a “primary dust layer” (ie, a powder cake) is formed on the surface of the filter material, and the subsequent dust is filtered through the powder cake. In the initial stage of use, due to the large gap of the filter material itself, part of the dust will be discharged through the filter material. The filtration process does not really start until the powder is formed. After continued use, the dust on the surface of the filter material will gradually infiltrate into the filter material, causing the pores of the filter material to become clogged, so that the running resistance of the equipment is continuously increased until the filter material has to be replaced.
The PTFE coated filter material is a new type of filter material which is formed by laminating a layer of polytetrafluoroethylene (PTFE) film on the surface of a common filter material. This layer of film acts as a “primary dust layer”. Material exchange is carried out on the surface of the membrane and can be effectively filtered at the beginning of use. The unique three-dimensional network structure of the film makes it impossible for the dust to pass through without the pores being clogged. This type of filtration is called “surface filtration.” The membrane filter material can not only achieve near-zero discharge, but also because the film is non-sticky and the friction coefficient is small, the powder cake will fall off automatically, ensuring long-term stability of the equipment resistance, thus fully utilizing the superiority of the bag filter, it is an ideal filter. material selection.