PTFE Filter Bag
What is a PTFE Filter Bag?
A PTFE filter bag features a specialized membrane that filters out particles of specific sizes and shapes while allowing other particles to pass through. This innovative material boasts excellent self-lubrication, UV resistance, and moisture repellency. However, PTFE fiber filter material has average wear resistance, necessitating stricter requirements for the filter bag frame.
Features of PTFE Filter Bags
Specifications of PTFE Filter Bags
Material | 100% PTFE | |
Gram weight(g/m2) | 750 | |
Thickness(mm) | 1.1~2.0 | |
Air permeability (m3/m2.min) | 9 | |
Breaking strength(N/5cm) | warp | ≥450 |
weft | ≥450 | |
Breaking elongation(%) | warp | <5 |
weft | <5 | |
Temperature(℃) | continue | ≤250 |
instant | 280 | |
Chemical properties | Acid Resistance | Good |
Alkali Resistance | Good | |
Hydrolytic Resistance | Good | |
Abrasion resistance | Moderate | |
Applications
PTFE dust filter bags, made from polytetrafluoroethylene fibers, undergo processes such as needling, high-temperature shaping, impregnation, coating, and cutting. Their excellent properties, including hydrolysis resistance and chemical stability, make them widely applicable in various fields:
1. Waste Incineration
PTFE filter bags play a crucial role in waste incineration, where they effectively manage pollutants such as:
Needle-punched felt filter bags with a PTFE substrate and surface layer, coated with PTFE microporous membranes, excel in flue gas purification at waste-to-energy plants.
2. Coal-Fired Power Plants
Coal-fired power plants generate significant amounts of sulfur dioxide, nitrogen oxides, and inhalable particulate matter. PTFE’s exceptional properties make it ideal for use in composite needle-punched felt filter bags, combined with other high-temperature resistant fibers like PPS. These bags effectively reduce dust emissions in high-temperature environments, enhancing environmental compliance.
3. Cement Industry
As energy conservation and emission reduction standards become more stringent in China, traditional dust removal methods in the cement industry are insufficient. Bag filters made from traditional needle-punched felt composites with PTFE membranes can reduce atmospheric pollutant emissions and recover cement powder, improving production efficiency, lowering costs, and saving energy.
4. Laboratory Purification
In clean rooms of the biological, food, pharmaceutical, and medical industries, where air cleanliness is paramount, PTFE-coated filter materials offer stability, corrosion resistance, and high flow rates. These properties meet the stringent requirements for efficient air filtration, making PTFE filter bags valuable in these applications.
Choose Darko’s PTFE filter bags for superior filtration, durability, and efficiency in your industrial applications!
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