Commonly known as Teflon® filter bags, these are crafted from PTFE - polytetrafluoroethylene - a high-performance synthetic polymer renowned for its exceptional characteristics. PTFE's unique properties include being hydrophobic (water-repellent), chemically resistant, non-sticky, and having a high-temperature tolerance along with a low friction coefficient. These superior attributes make PTFE filter bags an ideal choice for diverse filtration applications. As a filter media, they possess the following exemplary characteristics:
- High Filtration Efficiency - The microscopic pores in PTFE material create an extensive surface area that captures particles effectively, even those as small as submicron sizes. This leads to outstanding filtration efficiencies, often surpassing 99%, which is vital for applications requiring stringent air quality control.
- Chemically Inert - PTFE materials exhibit high resistance to many corrosive chemicals, making them perfect for filtration in environments involving aggressive gases. This chemical resilience ensures extended bag life and minimizes the risks of bag failure or deterioration.
- Excellent Thermal Stability - PTFE materials endure extreme temperatures without compromising filtration efficiency. With a continuous operating temperature of 240°C (464°F), Teflon filter bags are ideal for high-temperature applications, such as industrial furnaces or incinerators.
- Low Friction Coefficient - PTFE filter bags boast superior dust cake release properties. The low surface energy of PTFE prevents dust particles from adhering to the bag's surface, making cleaning easier and reducing the frequency of bag replacements. This helps maintain consistent filtration performance and lowers maintenance costs.
- Excellent Hydrolysis Resistance - PTFE's water-repelling traits make it an excellent choice for applications where moisture could pose a problem.
- Excellent Oxidation Resistance - PTFE's strong resistance to oxidation ensures the durability and longevity of the filter bags in environments with high moist heat.
In addition to these filtration characteristics, PTFE filter bags offer several other significant advantages:
- Long Service Life- PTFE filter bags are durable even under challenging conditions, leading to substantial cost savings over time.
- Easy to Clean and Maintain- PTFE filter bags are simple to clean and maintain, which reduces downtime and boosts productivity.
- Lower Energy Consumption - The enhanced cleaning efficiency of Teflon filter bags helps lower the overall pressure drop across the filter media, thus 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 |
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