Industrial Polyester(PES) Fiber Antistatic 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.
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(%)