PTFE (Polytetrafluoroethylene) is a synthetic fluoropolymer composed of carbon and fluorine atoms. Known for its exceptional chemical inertness, thermal stability, and non-stick surface.. PTFE is the same base material used in Teflon™ coatings. Its unique molecular structure prevents the adhesion of dust particles which ensuring superior cleaning and longer filter life.
A PTFE filter bag full form is “Polytetrafluoroethylene filter bag” is a high-performance industrial bag filter which designed to provide outstanding chemical resistance, temperature stability, and filtration efficiency. We senotay filter bag Manufactured using 100% PTFE fiber, these advanced filters are engineered to handle harsh chemical gases, corrosive dust and extreme process conditions where other materials like polyester, Nomex, or PPS would degrade.We always try to provide best filter bags services.
PTFE (known commercially as Teflon) has become the gold standard in dust filtration across high-demand industries like petrochemical processing, cement production and power generation in where reliability, purity and efficiency are critical.
Fiber Composition: 100% Polytetrafluoroethylene (PTFE) fiber.
Weight: approximately 750 g/m².
Thickness: 0.9–1.1 mm.
Air Permeability: 1.8–3.6 L/m²/s at 200 Pa.
Operating Temperature: less than<260°C (Instantaneous: 280°C).
Treatment: Dipping Coating for improved filtration and anti-stick properties.
Performance: Excellent chemical inertness and thermal endurance.
Type No. | Air Permeability (L/m²/s) | Working Temp (°C) | Surface Treatment | Typical Application |
PTFE-100 | 1.8 | 250 | Dipping Coated | Steel Dust Collection |
PTFE-200 | 2.2 | 260 | Glazed Finish | Power Industry |
PTFE-300 | 2.5 | 240 | PTFE Membrane | Cement Production |
PTFE-400 | 3.0 | 250 | Anti-Static | Chemical Industry |
PTFE-500 | 3.0 | 280 | PTFE Coated | Petrochemical Plants |
PTFE-600 | 2.8 | 270 | Hydrophobic | Food & Beverage |
PTFE-700 | 3.4 | 260 | Dual-Layer | Waste Incineration |
PTFE-800 | 3.6 | 240 | PTFE Film Lamination | Pharmaceutical |
PTFE-900 | 2.4 | 250 | Singed | Pulp & Paper |
PTFE-1000 | 3.2 | 260 | Antioxidant Treated | Metallurgical Plants |
At Hebei OuTai Environmental Protection Equipment Co., Ltd. (Senotay) our every PTFE filter bag is produced under strict quality standards using advanced manufacturing processes and testing systems.
In the pharmaceutical industry, PTFE filter bags are used to filter a variety of pharmaceutical fluids and gases, ensuring product purity and safety. In the metallurgical industry, they are able to withstand the filtration needs of high temperatures and corrosive substances, providing reliable filtration for metallurgical production.
In the food and tobacco industry, the corrosion resistance and cleanliness of PTFE filter bags enable them to filter a variety of food ingredients and tobacco products, ensuring product quality and taste. In the paper industry, PTFE filter bags can effectively remove impurities in the pulp, improving the quality and appearance of paper.
In the petrochemical and power industries, the high temperature and corrosion resistance of PTFE filter bags makes them ideal for filtering a wide range of oils and chemicals.
In the cement production field, PTFE filter bags are able to filter dust and particles in the cement production process, protecting the environment and equipment.
In addition, PTFE filter bags play an important role in other chemical applications, such as filtering various organic solvents, acid and alkali solutions. Its unique performance and wide range of applications make PTFE filter bags an indispensable part of modern industrial production.
ISO 9001:2015 Certified Facility for global export quality assurance.
Our Precision Needle-Punching & Laminating Lines ensuring uniformity and pore control.
Advanced PTFE Dipping Technology delivering superior surface finish for easy cleaning.
High-Temperature Heat Setting prevents shrinkage and distortion during operation.
Customized Production: Tailored to fit pulse-jet, reverse-air and mechanical shaker dust collectors
These innovations keep Senotay among the top PTFE filter bag manufacturers in China and beyond.
Inert to acids and alkalis and including hydrofluoric and sulfuric acid.
Non-reactive to organic solvents and hydrocarbons.
Thermal decomposition point: around 327°C.
Non-hygroscopic, unaffected by moisture or high humidity.
Flame-retardant – PTFE does not sustain combustion.
Petrochemical and Refinery Industry.
Cement Kilns and Lime Plants.
Pyrolysis and Metal Smelting.
Waste Incineration and Power Plants.
Food and Beverage and Tobacco Industry.
Pulp and Paper Manufacturing.
Pharmaceutical and Fine Chemical Sectors.
These industries rely on Senotay’s PTFE dust collector bags to ensure environmental compliance, efficiency and maintenance reduction.
product name: | PTFE filter bags | |
Fiber Type | Polytetrafluoroethylene | |
Weight (g/ Square meter ) | 750 | |
Thickness(mm) | 0.9-1.1 | |
Tensile strength (N/5×20cm) | vertical | 800 |
Weft | 800 | |
Air permeability (L/m2/s·200pa) | 1.8-3.6 | |
Recommended operating temperature (℃) | ＜260 | |
Instantaneous operating temperature (℃) | 280 | |
Surface treatment process | Dipping coating | |
Model Code | Air Volume (m³/h) | Dust Load (g/m³) | Filtration Efficiency (%) | Pressure Drop (Pa) |
PF-101 | 2000 | ≤30 | 99.7 | 130 |
PF-202 | 3000 | ≤40 | 99.8 | 140 |
PF-303 | 4000 | ≤60 | 99.85 | 150 |
PF-404 | 5000 | ≤70 | 99.87 | 160 |
PF-505 | 6000 | ≤80 | 99.9 | 165 |
PF-606 | 7500 | ≤90 | 99.9 | 170 |
PF-707 | 9000 | ≤100 | 99.95 | 175 |
PF-808 | 11000 | ≤120 | 99.97 | 180 |
PF-909 | 13000 | ≤140 | 99.98 | 185 |
PF-1010 | 15000 | ≤150 | 99.99 | 190 |
To maximize performance and lifespan, PTFE filter bags should be maintained under proper cleaning systems (pulse-jet or reverse airflow).
Tips for Optimal Lifespan:
Avoid rapid temperature fluctuations.
Regularly monitor pressure drop.
Clean with dry compressed air..
Keep moisture and condensation under control.
Expected Service Life: 4–6 years depending on operational conditions.
PTFE vs. Alternative Filtration Media: The Clear Choice for Extreme Conditions
In harsh industrial environments, PTFE filter media outperform alternatives like PPS (Ryton) and glass fiber. While PPS degrades above 190°C and struggles with chemical exposure, PTFE maintains full integrity up to 260°C with unmatched chemical resistance. Unlike brittle glass fiber, PTFE offers superior flexibility and durability.
Extensive testing by our engineers shows PTFE filter bags last 2–3 times longer than PPS or glass fiber in aggressive chemical conditions—making PTFE the most reliable and cost-effective solution for extreme applications.
Senotay (Hebei OuTai) is one of China’s leading PTFE filter bag manufacturers, recognized for expert engineering, stable production capacity, and global customer support.
Over 15 Years of Experience in dust filtration and air purification systems
Complete In-House Fabrication – from material laminating to sewing and inspection
Certified Manufacturing (ISO 9001:2015)
R&D Collaboration with national environmental protection institutes
Fast Lead Time and export-ready logistics
