Commonly known as Teflon® filter bags, these remarkable bags are made from PTFE, short for polytetrafluoroethylene. PTFE is a high-performance synthetic polymer celebrated for its unique properties. Beyond its hydrophobic nature-meaning it repels water-PTFE boasts exceptional chemical resistance, non-stickiness, high-temperature tolerance, and a low friction coefficient. These extraordinary qualities make PTFE filter bags ideal for a vast array of filtration applications. As a filter media, PTFE brings the following standout characteristics:
- High Filtration Efficiency - The microscopic pores in the PTFE material provide an expansive surface area for highly effective particle capture, including particles as minuscule as submicron size. This enables the filter bags to achieve exceptional filtration efficiencies, often exceeding 99% or more-a critical factor in applications governed by stringent air quality regulations.
- Chemically Inert - PTFE materials exhibit superior resistance to many corrosive chemicals, making them an excellent choice for filtration applications involving aggressive gases. This chemical resilience ensures prolonged bag life and minimizes the risk of bag failure or degradation.
- Excellent Thermal Stability - PTFE materials can endure extreme temperatures without compromising filtration performance. With a continuous operating temperature of 240°C (464°F), Teflon filter bags are ideal for use in high-temperature environments, such as industrial furnaces or incinerators.
- Low Friction Coefficient - PTFE filter bags also boast excellent dust cake release properties. The low surface energy of PTFE prevents dust particles from adhering to the bag's surface, facilitating easier cleaning and reducing the frequency of bag replacements. This feature helps maintain consistent filtration performance and lowers maintenance costs.
- Excellent Hydrolysis Resistance - PTFE is renowned for its water-repelling characteristics, making it an excellent material for applications where moisture is a concern.
- Excellent Oxidation Resistance - PTFE is highly resistant to oxidation, ensuring the longevity and durability of the filter bags even in high-moisture, heat-intensive environments.
Beyond these filtration characteristics, PTFE filter bags also provide several other significant advantages, such as:
- Long Service Life- PTFE filter bags feature a long service life, even under challenging operating conditions, leading to substantial long-term cost savings.
- Easy to Clean and Maintain- PTFE filter bags are designed for ease of cleaning and maintenance, reducing downtime and enhancing productivity.
- Lower Energy Consumption - Thanks to the enhanced cleaning efficiency of Teflon filter bags, they help reduce the overall pressure drop across the filter media, improving the efficiency and energy consumption of the dust collection system.
| Characteristics |
Rating |
| Fiber Content |
100% Virgin PTFE |
| Weight |
750g/m² (22.12oz/yd²) |
| Thickness |
1.0mm (0.039in) |
| Fabric Construction |
Needlefelt |
| Continuous Operating Temperature |
240°C (464°F) |
| Maximum Surge Temperature |
260°C (500°F) |
| Abrasion Resistance |
Excellent |
| Acid Resistance |
Excellent |
| Alkali Resistance |
Excellent |
| Moist Heat Resistant |
Excellent |
| Energy Absorbsion |
Good |
| Filtration Property |
Fair |
| Oxygen (15%+) |
Excellent |
Professional Equipment
Aokai is committed to providing innovative solutions for valued customers in diverse market segments. We continuously strive for improvements and innovations in automation and digitalization across production, after-sales, office, and warehousing to deliver higher performance products and more secure services.
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With state-of-the-art testing equipment and professional technicians, we provide a robust foundation for projects such as working condition analysis, filter bag material selection, filter bag testing, flue gas testing and analysis, and filter bag life prediction, ensuring the highest standards in our production processes.
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