Commonly known as Teflon® filter bags, these are crafted from PTFE-short for polytetrafluoroethylene. PTFE is a high-performance synthetic polymer renowned for its unique properties. Besides being hydrophobic (water-repellent), PTFE stands out for its chemical resistance, non-stickiness, high-temperature tolerance, and low friction coefficient. These extraordinary characteristics make PTFE filter bags an ideal choice for diverse filtration applications. As a filter media, it offers the following outstanding features:
- High Filtration Efficiency - The microscopic pores in the PTFE material provide a large surface area for effective particle capture, even for submicron particles. This enables the bags to achieve high filtration efficiencies, often exceeding 99%, which is crucial for applications that demand stringent air quality standards.
- Chemically Inert - PTFE materials exhibit high resistance to a variety of corrosive chemicals, making them ideal for filtration applications involving aggressive gases. This chemical resistance ensures longer bag life and minimizes the risk of failure or degradation.
- Excellent Thermal Stability - PTFE materials can endure extreme temperatures without sacrificing filtration performance. With a continuous operating temperature of 240°C (464°F), Teflon filter bags are well-suited for applications involving high-temperature gases, such as those in industrial furnaces or incinerators.
- Low Friction Coefficient - PTFE filter bags also feature 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 replacements. This characteristic helps maintain consistent filtration performance and lowers maintenance costs.
- Excellent Hydrolysis Resistance - PTFE is known for its exceptional water-repelling characteristics, making it ideal 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 in high moisture and heat environments.
Beyond these filtration characteristics, PTFE filter bags offer several additional advantages:
- Long Service Life- PTFE filter bags boast a long service life, even under challenging conditions, leading to significant 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 - Thanks to their enhanced cleaning efficiency, Teflon filter bags help reduce the overall pressure drop across the filter media, thereby 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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