Polytetrafluoroethylene (PTFE) Filter Cloth
Polytetrafluoroethylene (PTFE) Filter Cloth is a premium high-performance filtration material manufactured from 100% PTFE fibers. It is widely used in industrial dust collection systems operating under extreme temperatures, highly corrosive flue gas conditions, and ultra-low emission requirements.
Compared with conventional filter media, PTFE Filter Cloth provides exceptional chemical resistance, outstanding thermal stability, superior filtration efficiency, and an extremely long service life. It is often considered the ultimate filtration solution for demanding industrial applications.
Its smooth surface structure, excellent hydrophobic properties, and microporous membrane technology allow PTFE filter media to maintain stable performance even under severe operating conditions involving acidic gases, moisture, and ultrafine particulate matter.
Key Features: 100% PTFE construction, continuous operation up to 240°C, pH resistance from 1–14, filtration efficiency up to 99.99%, ultra-low emissions, outstanding chemical resistance, and exceptionally long service life.
Technical Specifications
| Item | Description |
|---|---|
| Product Name | Polytetrafluoroethylene Filter Cloth |
| Material | 100% Polytetrafluoroethylene Fiber |
| Continuous Operating Temperature | 240°C |
| Instant Maximum Temperature | 260°C–300°C |
| Melting Point | Approximately 327°C |
| pH Resistance Range | pH 1–14 |
| Filtration Efficiency | ≥99.95% |
| Membrane Filtration Efficiency | Up to 99.99% |
| Typical Emission Level | ≤10 mg/Nm³ |
| Microporous Structure | 0.1–3.5 μm |
| Porosity | 75%–90% |
| Surface Characteristic | Smooth Surface with Low Friction Coefficient |
| Typical Weight | 750 g/m² |
| Thickness | Approximately 1.1 mm |
| Air Permeability | Approximately 100 L/dm²/min |
| Breaking Strength | ≥450 N / 5 cm |
| Heat Shrinkage Rate | ≤3% at 260°C for 90 Minutes |
| Burst Strength | >300 N/cm² |
Main Advantages
| Advantage | Practical Value |
|---|---|
| Excellent Chemical Resistance | Resistant to almost all acids, alkalis, and organic solvents. |
| Outstanding High Temperature Stability | Suitable for long-term operation under high-temperature flue gas conditions. |
| High Filtration Efficiency | Membrane surface filtration provides extremely low particulate emissions. |
| Low Operating Resistance | Smooth membrane surface improves dust release and reduces pressure drop. |
| Long Service Life | Service life can be 2–5 times longer than conventional filter media. |
| Excellent Moisture Resistance | Hydrophobic surface helps prevent filter bag blockage under high humidity conditions. |
| Strong Self-Cleaning Performance | High dust release efficiency helps reduce pulse cleaning frequency and energy consumption. |
Main Disadvantages
| Disadvantage | Practical Impact |
|---|---|
| Limited Abrasion Resistance | Mechanical abrasion protection is important during operation and installation. |
| Higher Material Cost | Initial investment cost is significantly higher than conventional filter media. |
| Moderate Mechanical Strength | Excessive stretching and sharp object damage should be avoided. |
| Limited Hydrofluoric Acid Resistance | Long-term exposure to Hydrofluoric Acid environments is not recommended. |
Typical Industrial Applications
| Industry | Typical Application |
|---|---|
| Waste Incineration Plants | High-temperature flue gas filtration under acidic gas conditions. |
| Steel & Metallurgical Industry | Blast furnace gas purification and alkaline dust filtration systems. |
| Coal-Fired Power Plants | Ultra-low emission dust collection and flue gas treatment systems. |
| Chemical & Pharmaceutical Industry | Organic solvent exhaust gas filtration and corrosive gas treatment. |
| Cement Industry | Cement kiln exhaust filtration and ultrafine particulate collection systems. |
| Carbon Black & Lithium Battery Industry | Fine powder recovery and ultrafine dust collection applications. |
Engineering Evaluation Summary
| Evaluation Item | Performance |
|---|---|
| Chemical Resistance | Excellent |
| High Temperature Resistance | Excellent |
| Filtration Efficiency | Excellent |
| Dust Release Performance | Excellent |
| Moisture Resistance | Excellent |
| Abrasion Resistance | Good |
| Cost Performance | Moderate |
| Service Life | Excellent |
PTFE Filter Cloth is the preferred solution for industrial filtration systems operating under highly corrosive, high-temperature, and ultra-low emission conditions. Its outstanding chemical resistance, superior filtration efficiency, excellent moisture resistance, and exceptional service life make it one of the most reliable filtration materials available for demanding industrial applications.
