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Woven Fiberglass Fabric Filter Bags for Dust Collection
Filmedia® fiberglass woven filter bags is widely used for industrial dust collection because of its high covering capacity , good air permeability and high filtration efficiency.
- Excellent heat resistance with continuous operating temperatures above 260°C.
- Outstanding dimensional stability with extremely low shrinkage.
- Superior chemical stability and acid resistance.
- High tensile strength and reliable mechanical performance.
- Non-hygroscopic, non-shrinking, and deformation-resistant.
- Good air permeability with low operating pressure drop.
- Excellent dust cake release and cleaning performance.
- High filtration efficiency, reaching over 99.99%.
Description
Fiberglass Filter Cloth
Fiberglass woven fabric is a high-temperature filtration material manufactured from E-glass or C-glass continuous filaments and textured fiberglass yarns through specialized weaving processes. Depending on application requirements, the fabric can be produced in plain, twill, or satin weave constructions to achieve the desired balance of strength, permeability, and filtration performance. After heat cleaning, chemical treatment, and flexible surface finishing, the fabric exhibits excellent heat resistance, corrosion resistance, and dimensional stability, making it one of the most widely used filter media for industrial dust collection systems. In addition, fiberglass filter cloth has high coverage and good air permeability, thus providing higher filtration efficiency and lower filtration resistance.
Regular Fiberglass Woven Fabric and Properties
| Code | Material | Finish Treatment | Weight (g/m²) | Thickness (mm) | Fabric Structure | Yarn Density (pc/cm) | Breaking Strength (N/25mm) | Air Permeability(L/m².s)(@200Pa) | Working Temp (ºC) | Peak Temp (ºC) | Cleaning Method | ||
| Lengh | Cross | Lengh | Cross | ||||||||||
| 350g | Alkali Free Fiber Glass | Acid Resistance +PTFE membrane | ≥350 | 0.35±0.05 | 1/3 Twill | 20±1 | 13±1 | ≥1800 | ≥1100 | 30-50 | ≤260 | ≤280 | Reverse Air |
| 450g | Alkali Free Fiber Glass | Acid Resistance +PTFE membrane | ≥420 | 0.42±0.05 | 1/3 Twill | 20±1 | 12±1 | ≥1800 | ≥1600 | 25-45 | ≤260 | ≤280 | Reverse Air |
| 550g | Alkali Free Fiber Glass | Acid Resistance +PTFE membrane | ≥550 | 0.55±0.05 | 1/3 Twill | 20±1 | 14±1 | ≥2400 | ≥1800 | 25-45 | ≤260 | ≤280 | Reverse Air |
| 750g | Alkali Free Fiber Glass | Acid Resistance +PTFE membrane | ≥750 | 0.75±0.05 | Double Weave | 18±1 | 16±1 | ≥2400 | ≥2400 | 20-40 | ≤260 | ≤280 | Pulse Jet |
| 800g | 100%PTFE | PTFE Full Bath +PTFE Membrane | ≥800 | 1.0-1,3 | – | – | – | ≥800 | ≥800 | 30-50 | ≤260 | ≤280 | Pulse Jet |
Specialized Structural Design for Reverse-Air Filter Bags
In reverse-air baghouse dust collectors, fiberglass woven filter bags are a classic and widely used core filtration element. To ensure stable operation under reverse-air conditions, fiberglass woven filter bags must be fabricated with specific structural reinforcements.
Because of the inside-out filtration path, when the reverse air presses from the outside of the bag inward during cleaning, the bag tends to collapse. To prevent the bag from flattening completely—which would trap the dust and prevent it from settling down—metal anti-collapse rings must be stitched into the bag at fixed intervals (typically every 1.5 to 2 meters) along its entire length.
The top of the filter bag is typically fitted with a metal cap, which is suspended from the top structure of the baghouse via a spring tensioning assembly. Maintaining proper installation tension prevents the bags from excessive twisting or violent swaying during reverse-air cycles.
Applications
Due to its excellent heat resistance, high filtration efficiency, and long-term operational stability, Fiberglass woven filter bags have become a mature filtration solution for high-temperature dust removal systems in the cement, steel, power generation, non-ferrous metallurgy, and chemical industries.
- Cement Plant
Cement Kiln head: high dust concentration, strong honing, high temperature, and high humidity.
Cement kiln end: fine dust not easy to capture, sticky and easy to paste bag, not easy to clean, high temperature, easy to fluctuate.
- Steel Plant
The steel plant has many dust collectors in a different area, such as blast furnace, coking, converter, lime kiln, etc. The high-temperature dust collectors can use fiberglass filter media.
- Asphalt Mixing Industry
- Dryer exhaust gas filtration
- Asphalt plant dust collection systems
- Carbon Black Plant
Carbon black, very small particles, high viscosity, easy to paste bags, the filter is mainly stable at 270℃-280℃, large water vapor, the filter bag are used to collect carbon black particles.
- Power Plant
Combustion is easy to coke, the concentration of smoke is high, the temperature is high, and it is easy to be burned. After burning, it contains sticky components, which is easy to cause paste bags. It is recommended to use high temperature and corrosion-resistant filter media.
- Chemical Plant
Titanium dioxide, the main component of which is a white pigment of titanium dioxide(TiO2). The name is titanium dioxide. The industry has high dust concentration, high temperature, small dust particle size, good dispersibility, the high-pressure difference of dust collector, and short life of filter bag. Glass fiber filter bag is used to collect products in titanium dioxide industry.