PTFE filter bag
PTFE fiber is a macromolecular linear structure, so it has strong temperature resistance, abrasion resistance, corrosion resistance, and chemical resistance. It is widely used in various harsh flue gas filtration environments such as steel, electricity, and garbage incineration.
▶Fiber/Core Material：PTFE（Polytetrafluoroethene）
▶Pros：Excellent weather resistance, stable performance under high temperature, low temperature, high humidity and other environments; low pressure drop performance can be maintained under high flow environment, and the filtration efficiency does not change.
▶Cons：The price of PTFE filter bags is quite expensive. In addition, the bonding wear resistance is poor. The bag frame must have 20 bars or more to support the filter bag.
▶Applications：Multi-fuel boiler, Waste incinerator
PTFE filter bag is one of the best filter medias among all the non-woven felt filter bags, it can also be called teflon filter bags; it's a high grade product of filter bag. PTFE filter bag has the best chemical resistance property. Due to its PTFE membrane, it has a very good filtration efficiency. Its working life can reach 5 years in the normal working condition.
Excellent weather resistance, stable performance under high temperature, low temperature, high humidity and other environments; low pressure drop performance can be maintained under high flow environment, and the filtration efficiency does not change.
The membrane pore size is between 0.2-3μm, the filtration efficiency can reach more than 99.99%, and almost zero emission is achieved. After cleaning, the porosity is not changed, and the dust removal efficiency is always high.
PTFE filter bag specifications
| Artical Name | PTFE Filter Felt | PPS/PTFE Filter Felt | |
| Material | Fiber | PTFE fiber | PPS/PTFE fiber |
| Scrim | PTFE | PTFE | |
| Weight | g/m³ | 750 | 580±20 |
| Thickness | mm | 1.0±1.3 | 1.8±0.2 |
| Air Permeability | m³/㎡.min.200pa | 3-9 | 10-18 |
| Breaking Strength（N/5cm） | Warp | ≥760 | ≥1000 |
| Weft | ≥760 | ≥1200 | |
| Elongation@50N（%） | Warp | ≤10 | ≤30 |
| Weft | ≤45 | ≤45 | |
| Service Temperature（℃） |
Continuous℃ | ≤260 | ≤190 |
| Instant℃ | 280 | 210 | |
| Finishing | Heat setting PTFE Membrane |
Singeing，Calendaring PTFE Coating |
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| Note:The price of PTFE filter bags is quite expensive. In addition, the bonding wear resistance is poor. The bag frame must have 20 bars or more to support the filter bag. | |||
▶The PTFE heat-resistant dust filter bag is the most resistant to heat and chemicals in the product line. It is considered the most advanced material in filter media.
▶PTFE yarn comes in two forms: The brown color of the material due to heat treatment gives it a better, more uniform yarn quality.
▶The density of PTFE is quite high compared to other polymers (0.65 compared to 0.3 of Polyester). Due to the same volume, PTFE has a higher density and weight. Of course, the dust filtration capacity of the PTFE filter bag is also among the highest.
▶The waterproof and oil-proof performance of the PTFE dust filter bag is very good:
OUTSTANDING ADVANTAGES
PTFE heat-resistant filter bag has an effective dust filtration capacity, normally the dust filtration efficiency falls between 95% – 99%.
The PTFE heat-resistant filter bag can withstand extremely high temperatures (up to 2500C) for a long time and instantaneously heat up to 2800.
In addition to high-temperature resistance, PTFE heat-resistant dust filter bags can withstand a variety of chemicals (especially chemicals with PH and oxidation resistance). In particular, this product line is not flammable.
The durability of the PTFE heat-resistant filter bag is high, normally the average life is about 4 years.
APPLICATION OF PTFE DUST FILTER BAG
PTFE filter bag is one of the popular dust filter bag products on the market and is widely applied in current environmental treatment and health protection technologies.
The product line has many outstanding advantages with many different capabilities. Not only popular in individual and small household environments but PTFE filter bags are also applied to many dust filtration systems in factories operating in areas such as:
▶Chemical factory.
▶Power plants.
▶Cement factory.
Industrial plants operate in other high-temperature environments such as liquid filtration, waste destruction, etc.
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