Industrial Anti-alkali P84(Polyimide) Antistatic 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.
The antistatic property of non-woven needled of felt filtration bag(material)
Some fiber(especially for synthetic fiber) has high electric resistance and easily to carry electric charge. The common polypropylene felt’s surface resistance can reach 1×1014Ω. Friction on the surface of the felt for one minute can produce 2000V high-voltage electrostatic, the half-life is 1600s. The sparks occurred while the electrostatic is discharged. The sparks may cause the burning of the flammable dust inside the dust catcher. It may also cause explosion when the dust concentration reach explosion limit. Some easy charged dust concentration onto the surface of the filtration resistance. The high load will damage the filtration bag.
In addition, some dust scatters in the air, it may also cause explosion when the dust reach to certain concentration and when dust meets the sparks. Most explosive dust has particle size of 1-150um. The smaller the particle is the bigger the surface area is and the easier to cause the flame. For the dust collection of inflammable and explosive dust, we must choose the anti-static filtration materials even take special fire retardant or explosion-proof method.
In order to prevent the electrostatic hazards, we must use the conductive anti-static filtration material in certain industry conditions. The anti-static property will make the filtration material easily release the surface charge into the ground.
Our production technology to produce the non-woven felt line products with anti-static function. The method is listed as follows:
Add anti-static thread into the fabric for non-woven needle felt.
Add conductive fibers into the fiber nets for non-woven needled felt filtration material.
Stainless steel fiber and modification conductive(carburizing) chemical fiber are commonly used. The filtration material with flame retardant properties generally refers to the fibers with limit oxygen index(LOI) more than 30. For example, PPS, P84, and PTFE fibers are safe.
For the fibers with LOI less than 30, such as polypropylene fiber, polyamide, polyester, and other filtration materials, our company can apply the flame retardant dipping treatment to reach the safety goal based on user needs.
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(%)