What is Fiberglass?
Fiberglass is a composite material made from fine strands of glass spun into filaments and either woven or non-woven to form fabric. This material possesses high tensile strength, thermal durability and chemical stability and thats making it one of the best filtration materials for demanding processes.
What is a Fiberglass Filter Bag?
A fiberglass filter bag is a high-temperature dust collection filter that is made from continuous glass fiber yarn woven into a strong, stable and smooth fabric. These filter bags are specially engineered for industrial dust collection systems operating under extreme heat, chemical corrosion and abrasive conditions.
This bags basically Used in heavy industries like cement, steel, carbon black, calcium carbide, electrochemical and power generation.Our senotay’s fiberglass filter bags have become a critical component for high-efficiency particulate filtration and emissions control.
Main Features & Properties of Fiberglass Filter Bag
· Continuous operating temperature:Temp. upto up to 260°C, peak Temp is 300°C.
· It is Excellent in acid and oxidation resistance.
· It have Low elongation and high dimensional stability.
· It have High filtration efficiency with minimal pressure drop.
· Compatible with PTFE membranes, graphite coatings and silicone treatments.
· Superior resistance to hydrolysis and mechanical wear.
Technical Advantages in Manufacturing Fiberglass Filter Bags at Senotay
At Hebei OuTai Environmental Protection Equipment Co., Ltd. (Brand: Senotay) we apply advanced technology and strict quality control to produce premium fiberglass filter bags that meet industrial and environmental standards worldwide.
Senotay’s Manufacturing Advantages
· In-House Weaving Lines: It is well Controlled fabric density for optimal filtration efficiency.
· Surface Enhancement Treatment: We put PTFE coating In this bag for anti-adhesion and chemical protection.
· Precision Stitching: It deal with Heat-resistant sewing threads to maintain bag integrity.
· ISO 9001:2015 Certified Production: We Ensures consistent quality across every batch.
· Custom Fit Production: Tailored for various pulse-jet and reverse-air dust collectors.
Senotay’s fiberglass filter bags deliver superior dimensional stability, longer life, and lower operating costs — key reasons it’s a trusted choice among chemical and metallurgical industries.
Difference Between Woven vs. Non-Woven Fiberglass Filter Bags
Property | Woven Fiberglass | Non-Woven Fiberglass |
Structure | Interlaced yarns forming a stable weave. | Randomly bonded fibers (needle felt) |
Air Permeability | Lower (dense structure) | Higher (porous, flexible fabric) |
Mechanical Strength | Higher tensile and tear resistance | Good flexibility, less stiffness |
Dust Release | Easier due to smoother surface | Requires additional coating |
Common Use | High-temperature steady flow systems | Pulse cleaning and flexible housing systems |
Advantages of Fiberglass Filter Bags
· Excellent Heat Resistance – Operates continuously at 280°C with minimal shrinkage.
· Superior Filtration Efficiency – Up to 99.5% efficiency in particle capture.
· Chemical Durability – Withstands acids and oxidation gases.
· Low Energy Cleaning – Easier dust release reduces pulse energy demand.
· Non-hygroscopic – Does not absorb water or moisture.
· Extended Lifespan – Resistant to abrasion, maintaining stable performance for years.
Types of Fiberglass Filter Bags
Type No. | Weight (g/m²) | Thickness (mm) | Operating Temp (°C) | Surface Finish |
FGB-100 | 450 | 0.8 | 250 | Glazed |
FGB-200 | 500 | 1.0 | 260 | PTFE Coated |
FGB-300 | 550 | 1.1 | 270 | Graphitized |
FGB-400 | 600 | 1.2 | 280 | Silicone Treated |
FGB-500 | 650 | 1.3 | 280 | Acid-Resistant |
FGB-600 | 700 | 1.4 | 250 | PTFE Laminated |
FGB-700 | 750 | 1.5 | 260 | Plain Finish |
FGB-800 | 800 | 1.6 | 280 | Dual Layer Coated |
FGB-900 | 900 | 1.8 | 280 | Oil & Water Repellent |
FGB-1000 | 950 | 2.0 | 280 | High Density Weave |
How Senotay Improves the Performance of Fiberglass Filter Bags
· Surface Finishing Treatments: PTFE or silicone coatings enhance resistance to acids and sticky dust.
· Thermal Stabilization: Heat-setting guarantees stable dimensions during continuous high-temperature use.
· Reinforced Stitching: High-temp threads prevent seam failure under stress.
· Customized Gas Flow Design: Optimizes collector efficiency, making Senotay filters compatible with all major bag filter housings.
Comprehensive Technical Specifications
Parameter | Typical Value | Test Method | Range | Notes |
Fiber Content | 100% Glass Fiber | Visual inspection | 85-100% Glass | May include composite materials |
Weight | 700±50 g/m² | ISO 9073-1 | 600-900 g/m² | Varies by construction type |
Thickness | 0.6-1.8 mm | ISO 9073-2 | 0.5-2.0 mm | Measured at 200 Pa pressure |
Tensile Strength | Warp >2500 N/5×20cm | ISO 9073-3 | 2200-2800 N | Woven construction |
Weft Strength | >1800 N/5×20cm | ISO 9073-3 | 1500-2100 N | Woven construction |
Air Permeability | 50-120 L/m²/s | ISO 9237 | 40-150 L/m²/s | At 200 Pa pressure |
Continuous Temp | ≤280°C | ASTM D5587 | 260-280°C | Varies by construction |
Peak Temp | 300°C | ASTM D5587 | 290-300°C | Short-term exposure |
Filtration Efficiency | >99.5% | EN 1822 | 1μm particles | Depends on surface treatment |
Acid Dew Point Margin | >20°C | Industry standard | Application specific | Critical for longevity |
Maintenance and Longevity
Proper maintenance ensures long-term reliability of fiberglass filter bags.
Maintenance Tips:
· Kindly Maintain steady operating temperatures below 280°C.
· Please keep Avoid exposure to hydrofluoric acid vapors.
· Periodic pulsing with clean, dry air.
· Kindly Store in a dry and non-humid environment.
· Service Life Expectancy: Up to 6–8 years under optimal use.
Fiberglass Filter Bag — Frequently Asked Questions (FAQ)
Q1: What is a fiberglass filter bag used for?
Fiberglass filter bags are used for high-temperature dust collection and gas filtration in cement kilns, power plants, steel furnaces, and chemical processing industries. They perform efficiently where ordinary fabric filters cannot withstand heat or chemical exposure.
Q2: What temperature can fiberglass filter bags handle?
They can continuously operate up to 260°C and withstand peak temperatures up to 300°C, making them ideal for extreme industrial environments such as boilers and incinerators.
Q3: Are fiberglass filter bags chemically resistant?
Yes. Fiberglass filter bags have excellent resistance to acids and oxidation and moderate resistance to alkalis. They are also non-flammable and corrosion-resistant, providing stable performance in chemical gas streams.
