Commonly known as Teflon® filter bags, these are crafted from PTFE, which stands for polytetrafluoroethylene. PTFE is a high-performance synthetic polymer renowned for its exceptional properties. It is hydrophobic, meaning it repels water, and is known for its chemical resistance, non-stickiness, high-temperature tolerance, and low friction coefficient. These unique attributes make PTFE filter bags perfect for various filtration applications. As a filter media, they boast the following superior characteristics:
- High Filtration Efficiency - The microscopic pores in the PTFE material provide an extensive surface area for capturing particles, even those as minute as submicron in size. This capacity allows the bags to achieve impressive filtration efficiencies, often exceeding 99% or more, which is crucial in environments with stringent air quality regulations.
- Chemically Inert - PTFE materials exhibit remarkable resistance to numerous corrosive chemicals, making them ideal for filtration tasks involving aggressive gases. This chemical resilience ensures prolonged bag life and minimizes the risk of 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 perfectly suited for high-temperature gas applications, such as those found in industrial furnaces or incinerators.
- Low Friction Coefficient - PTFE filter bags offer outstanding dust cake release properties. Their low surface energy prevents dust particles from adhering to the bag's surface, making cleaning easier and reducing the frequency of bag replacements. This trait helps maintain consistent filtration performance and cuts down on maintenance costs.
- Excellent Hydrolysis Resistance - PTFE is well-known for its water-repelling characteristics, making it an excellent choice for applications where moisture poses a concern.
- Excellent Oxidation Resistance - PTFE's high resistance to oxidation ensures the filter bags' longevity and durability in high moist heat environments.
In addition to these filtration benefits, PTFE filter bags also offer several other advantages, including:
- Long Service Life- PTFE filter bags exhibit a long service life, even under challenging conditions, leading to significant cost savings over time.
- Easy to Clean and Maintain- PTFE filter bags are straightforward to clean and maintain, reducing downtime and boosting productivity.
- Lower Energy Consumption - Due to the enhanced cleaning efficiency of Teflon filter bags, they help lower the overall pressure drop across the filter media, enhancing 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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