Industrial Acid Resistance Polyester(PES) Fiber Waterproof Film Coated Filter Cloth (needled Felt)
Polyeter(PES) fiber and non-woven needled felt filtration material made of it Polyester needled filtration felt is made by polyester fiber and the fabric woven high-strength, low-elongation yarn. The Dacron fibers are needled noto the fabric by needled-punching machine. Polyester fiber has low...
Polyeter(PES) fiber and non-woven needled felt filtration material made of it
Tensile Strength (N/5×20cm)
Thread burning, surface smoothing or coating etc.
Polyester needled filtration felt is made by polyester fiber and the fabric woven high-strength, low-elongation yarn. The Dacron fibers are needled noto the fabric by needled-punching machine.
Polyester fiber has low absorption of humidity. The water regain rate under standard condition is 0.4-0.5%, while 0.6-0.8% under the condition of relative humidity 100%. Therefore, the fiber will keep almost the same properties in both dry and wet conditions. It shows good resistance for almost all the atmosphere under the room temperature. The strength of the polyester is high and the elastic recovery performance is good. The strength of it is 3.52-5.28CN/dtex, elongation at break is around 30-40%. The polyester has good size stability, high strength, high elongation and good elastic recovery performance. So that, the polyester fabrics has good abrasion resistance. The glass transition point of polyester fiber is 80, melting point is 255℃~265℃. It starts to become soft at 230℃~240℃. Polyester fiber has very good application function under room temperature. It is the most reasonable filtration materials for the industry conditions with common temperature.
This product has the advantages of high porosity, good permeability, good abrasion resistance and resistance to acid. The consumption amount of polyester is the biggest among the needled felt filtration material. It is widely used in the fields of metallurgical, chemical, building materials, metallurgy, power generation, ceramics, machinery, mining, petroleum, pharmaceutical, food, dye, mining etc. It is currently the most ideal filtration materials for the common temperature conditions.
Waterproof and oil-proof function of the non-woven needled felt product
In some of the working conditions, the water contains of the flue gas is high and the temperature of it is relative low. The humidity in the gas then turns to dew on the surface of the filtration bag. That often leads to the dust sticking on the surface of the bag and reduction of the filtration function. The waterproof and oil-proof function for the common needled felt material/bag are all not good. In order to prevent the above mentioned problem. We should apply the pos-treatment of dipping or surface coating of water-proof materials for the filtration material. The materials will have the function of waterproof and oil-proof function after the treatment and the size-fixing process under high temperature. The technology makes the filtration on bags having the same ideal performance even in the high humidity conditions.
Anyhow, the high humidity gas, especially the gas that contains water-absorbable dust, is easy to lead the dust sticking on the filtration bag. We recommend that the customers should choose the regular and simple round bag but not the flat bag with complex sharp and design. The working temperature of the dust catcher should be controlled to 10℃-20℃ higher that the dew point.
Polyester film coated needled felt
Filtration wind speed
Dust particle size≥5µm
Continuous Working Temperature
Instantaneous Working Temperature
Acid and alkali resistance
Dust Stripping Rate(%)
Static Dust Catching Rate(%)
Dynamic Dust Catching Rate(%)