Polyester filter cloth. Polyester is a polyester chemical fiber, known as polyethylene terephthalate. Polyester has good tensile strength, abrasion resistance and dimensional stability, and is especially suitable for drum vacuum filter and belt press filter. Its chemical stability is not very good, but it is resistant to oxidation by oxidants and reducing agents, and it is also good in acid resistance. However, it is not resistant to concentrated sulfuric acid and phosphoric acid. When high temperature and high concentration of alkali occur, chemical reactions occur to dissolve the polyester. The solvent of phenol is swollen with increasing concentration and temperature, and is hydrolyzed in humid air at a high temperature, so the use temperature is lower than that of other synthetic fibers, and is about 80 °C.
Polyester filter cloth can be divided into two types: monofilament filter cloth and belt filter cloth.
The monofilament filter cloth adopts a new type of filter cloth woven by monofilament, which has good gas permeability and water permeability, is not easy to be clogged, and the filter cake is easy to be peeled off, and the regeneration effect is good. Suitable for belt filter, plate frame, box, centrifugal, leaf filter, etc.
The belt filter cloth is mainly used for belt filter. It is woven with special original and production process, with excellent acid resistance*, unique style in strength, tightness and thickness, and excellent dimensional stability.
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