Industrial High Temperature Resistance P84(Polyimide) Waterproof Film Coated Filter Cloth (needled Felt)
Our company produces the non-woven needled felt filtration material and filtration bags made of P84 fiber. The materials is used for the dust collection in the industry environment of outlet if cement kiln and waste incineration. The product has the following advantages: P84 fiber has irregular...
Our company produces the non-woven needled felt filtration material and filtration bags made of P84 fiber. The materials is used for the dust collection in the industry environment of outlet if cement kiln and waste incineration. The product has the following advantages:
P84 fiber has irregular shape section like leaves, therefore, it has about 80% more surface area than that of the fibers with regular round round section. That ensures the high efficiency of filtration and prevents the dust to infiltrate deeply into the filtration material. The material can be used under the temperature of 240℃ (long-term) and 260℃ (short-term), suitable to be used with PH5-9. It is on of the few materials that can stand such high temperature. The fiber has good hydrolysis stability, LOI(limit oxygen index) of it is 38%. The filtration bag is suitable for long time working with high amount of dust and chemical load conditions. The filtration materials is the best choice for the dust collection in the industry environment of outlet of cement kiln and waste incineration.
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(%)