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PTFE Bag Filter Material

February 09,2022

There are manybag filtermaterials. Today, let’s talk about PTFE, which I like to help you.


PTFE, namely polytetrafluoroethylene, also known as Teflon, is one of the more high-end varieties of bag filter materials. Polytetrafluoroethylene synthetic fiber filter bag is a filter bag made of a unique material. It can withstand acid-base erosion in all pH values under the continuous operating temperature of 240 ℃ and the instantaneous temperature of 260 ℃. Polytetrafluoroethylene synthetic fiber filter bag has excellent self-lubrication, no moisture absorption and can withstand ultraviolet radiation. However, the wear resistance of PTFE fiber filter material is general, so there are strict requirements for the filter bag frame (finish). PTFE fiber filter bag is more suitable for harsh conditions requiring corrosion resistance and occasions requiring high service life of filter materials.


Polytetrafluoroethylene synthetic fiber filter bag can be used for flue gas treatment in coal-fired boiler, waste incineration, carbon black production, titanium dioxide (TiO2) production and other processes. PTFE filter bag is also used in the primary smelting, refining and chemical production of some metals.


PTFE filter bagfeatures:


The surface of the membrane is smooth and resistant to chemical substances. It is covered on the surface of ordinary filter materials, which plays the role of a disposable dust layer, intercepting all the dust on the surface of the membrane to realize surface filtration. It has incomparable advantages over traditional filter materials.


It has the characteristics of high peeling strength, large air permeability, small resistance, concentrated and uniform pore size distribution and so on.


Installed in the dust removal equipment, it will quickly and effectively intercept the ultra-fine dust calculated in microns. The dust removal efficiency of PTFE filter bag is more than 99.99%. It is an effective and economical new filter material in industrial dust filtration and material recovery.


The obvious difference from other pure high-performance fiber (PPS, glass fiber, P84, aramid) filter materials is that PTFE will not age over time. With the joint action of high-temperature gas, corrosive gas and liquid, the breaking strength of PTFE base cloth will not decay and its service life will be greatly improved.


PTFE Filter Bag Application:


Chemical, petrochemical, oil refining, chlor alkali, acid making, phosphate fertilizer, pharmaceutical, pesticide, chemical fiber, dyeing, coking, coal gas, organic synthesis, nonferrous smelting, steel, atomic energy and high-purity product production (such as ion-exchange membrane electrolysis), viscous material transportation and operation, food, beverage and other processing and production departments with high hygiene requirements.


Technical parameters of PTFE filter bag:

Product Name: PTFE filter bag

Fiber 100% PTFE

Base cloth 100% PTFE

Square gram weight 750g / m2

Thickness 1.1mm

Density 0.68g/cm3

Air permeability: 100L / DM2 min

Breaking strength – longitudinal ≥ 450N / 5cm

Breaking strength – transverse ≥ 450N / 5cm

Elongation @ 200N / 5cm – longitudinal 300N / cm2

Continuous working temperature 240 ℃

Instantaneous working temperature 260 ℃

Post treatment heat setting


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