Commonly known as Teflon® filter bags, these are crafted from PTFE (polytetrafluoroethylene), a high-performance synthetic polymer celebrated for its unique properties. PTFE is hydrophobic, meaning it repels water, and is renowned for its chemical resistance, non-stick nature, high-temperature tolerance, and low friction coefficient. These outstanding features make PTFE filter bags ideal for a wide range of filtration applications, boasting the following remarkable characteristics:
- High Filtration Efficiency - The microscopic pores in the PTFE material offer a vast surface area for effective particle capture, even for submicron-sized particles. This enables the filter bags to achieve high filtration efficiencies, often exceeding 99%, which is crucial in applications that adhere to stringent air quality regulations.
- Chemically Inert - PTFE materials exhibit high resistance to many corrosive chemicals, making them ideal for filtration applications involving aggressive gases. This chemical resistance ensures longer 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 perfect for high-temperature gas applications, such as industrial furnaces or incinerators.
- Low Friction Coefficient - PTFE filter bags provide 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 need for frequent bag replacements. This attribute helps maintain consistent filtration performance and cuts down maintenance costs.
- Excellent Hydrolysis Resistance - Known for its water-repelling characteristics, PTFE is an ideal material for applications where moisture poses a challenge.
- Excellent Oxidation Resistance - PTFE's high resistance to oxidation ensures the longevity and durability of the filter bags, even in high moist heat environments.
In addition to these filtration characteristics, PTFE filter bags also offer several other advantages, such as:
- Long Service Life- PTFE filter bags boast a long service life, even under challenging conditions, leading to substantial cost savings over time.
- Easy to Clean and Maintain- PTFE filter bags are easy to clean and maintain, reducing downtime and enhancing productivity.
- Lower Energy Consumption - The enhanced cleaning efficiency of Teflon filter bags reduces the overall pressure drop across the filter media, improving the dust collection system's efficiency and energy consumption.
| 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 |
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