Aramid Filter Bag
Aramid Filter Bag
Aramid Filter Bag is a type of bag-type filter element primarily made from aramid fibers and is widely used in the field of industrial dust removal .
- Material: Aramid fiber + Aramid substrate
- Acid and Alkali Resistance: Moderate resistance to acids and alkalis
- Operating Temperature: High temperature; continuous operating temperature ≤204°C, momentary operating temperature ≤240°C
- Prominent Properties: High temperature resistance, high strength, resistance to acid and alkali corrosion, resistance to chemical corrosion, abrasion resistance, flex resistance, long service life, etc.
- Service Life: 1-2 years
Detailed introduction
Currently, the majority of aramid fibers used in China’s high-temperature filtration sector are meta-aramid (Aramid 1313) and polysulfonamide fiber. Major domestic and international products include Nomex® (DuPont, USA), Conex® (Teijin, Japan), and Tametar® (Yantai Taihe New Materials Co., Ltd., China). Ample raw material supply makes it an ideal fiber for various high-temperature filter materials, including filament filter cloth, blended filament-staple filter cloth, staple fiber filter cloth, and needle-punched filter cloth. The fiber has an oxygen index of 29% and is self-extinguishing. When exposed to temperatures above 400℃, the fiber undergoes slow carbonization.
Aramid filter bags can operate continuously at 204℃ (instantaneous temperature up to 250℃) and withstand repeated instantaneous temperature fluctuations of 250℃. They exhibit excellent dimensional stability with a thermal shrinkage rate of less than 1% at 250℃, ensuring superior high-temperature resistance. Additionally, they possess good chemical resistance: low-concentration acids, alkalis, and most hydrocarbons have no adverse effects, and even small amounts of fluorides do not cause significant corrosion. Proven for wide application in high-temperature filtration, aramid filter materials maintain high strength and wear resistance during long-term use. Compared to glass fibers, aramid fibers offer unparalleled wear resistance and folding endurance. With its high temperature resistance and long service life, aramid has become the mainstream filter media for baghouse dust collectors in high-temperature filtration scenarios.
Post-processing methods: Singeing and calendering, high-temperature setting, water and oil repellency treatment, antistatic treatment, PTFE membrane lamination, emulsion impregnation, surface coating
| Product Name | Weight (g/m²) | Thickness (mm) | Air Permeability L/(dm²·min) | Working Temp | Tensile Strength | Break Elongation | |||
| Continuous (°C) | Peak (°C) | (°C) MD (N) | CD (N) | MD (%) | CD (%) | ||||
| Aramid Needle Felt | 450–600 | 1.8–2.2 | 140–200 | 204 | 240 | ≥900 | ≥1200 | <20 | <45 |
| Products with desired unit weight, thickness, and finishing styles can be provided according to customers’ requirements. | |||||||||
| Aramid Needle Felt Specifications | |
| Product Name | Aramid Needle Felt |
| Weight (g/m²) | 450–600 |
| Thickness (mm) | 1.8–2.2 |
| Air Permeability (L/(dm²·min)) | 140–200 |
| Working Temp (Continuous °C) | 204 |
| Working Temp (Peak °C) | 240 |
| Tensile Strength MD (N) | ≥900 |
| Tensile Strength CD (N) | ≥1200 |
| Break Elongation MD (%) | <20 |
| Break Elongation CD (%) | <45 |
| Products with desired unit weight, thickness, and finishing styles can be provided according to customers’ requirements. | |
Application
Cement
Asphalt
Steel
