Filter Fabric – Specialized Textile Material for Air and Gas Filtration
Filter fabric is a specialized textile material used in air and gas filtration. It is commonly used in industrial facilities, dust collection systems, and ventilation systems. Bag filter fabrics capture particles and pollutants, improving air quality and reducing environmental emissions.
Features of Filter Fabrics
✅ Material – Made from synthetic fibers such as Polyester (PET), Polypropylene (PP), Aramid (Nomex), and PTFE (Teflon).
✅ Porous Structure – Fine fiber structure allows for the capture of particles of different sizes.
✅ Chemical Resistance – Available in acid-, alkali-, or high-temperature-resistant fabrics for different industrial environments.
✅ Applications – Used in cement factories, power plants, metallurgy, chemical facilities, food production, and the pharmaceutical industry.
Filtration Quality Classes (F5 – F9)
Filters are typically classified according to ISO 16890 or the former EN 779:2012 standards.
| Class | Particle Retention Efficiency (%) | Application Area |
|---|---|---|
| F5 (ISO ePM10 50%) | ≥40-60% | Pre-filtration, general ventilation systems |
| F6 (ISO ePM10 60%) | ≥60-80% | Fine dust filtration, air conditioning systems |
| F7 (ISO ePM2.5 70%) | ≥80-90% | Offices, hospitals, hotels |
| F8 (ISO ePM1 80%) | ≥90-95% | Precision filtration, laboratories, food production |
| F9 (ISO ePM1 90%) | ≥95% | High-efficiency air purification systems |
- F5 – F7 classes are used for coarse and medium-sized dust filtration.
- F8 and F9 classes provide higher efficiency by capturing finer particles.
These classifications are particularly important in ventilation and HVAC (Heating, Ventilation, Air Conditioning) systems. Higher-class filters are preferred in cleanroom environments and areas requiring high hygiene standards.
