Assess seam strength, elongation, and shrinkage after heat exposure.
Simulate real industrial dust to measure retention rate under load.
Industrial Dust Filter Bags Solutions for Dust Collection Systems
- Custom Manufacturing
- Flexible Supply Chain
- Full-Process Quality Control
Industrial Dust Filter Bags
As a professional Dust Filter Bags Manufacturer, we specialize in providing high-efficiency filtration solutions for various industrial environments. Our non woven filter bags are engineered for superior air pollution control and particulate recovery.
We offer two primary construction types:
- Needle-Felt (Non Woven): Precision-engineered non woven filter bags that provide exceptional depth filtration for fine particles.
- Woven Fabric: Known for its superior mechanical strength and dimensional stability in heavy-duty environments.
Non Woven Filter Bags Product Overview
Non-woven fabric is a kind of fabric that connects fibers together by other methods instead of weaving or knitting. It uses physical, chemical or thermal treatment to bond fibers together to form a fiber mesh structure. Non-woven fabric does not have a regular interwoven structure like traditional fabrics. It is formed by random or regular arrangement of fibers.
Range of Non-woven Filter bags
Technical Specifications: Non-Woven Filter Media
| Fibre types | Product code | Weight (g/m2) | Continuous Temperature | Peak Temperature | Remark |
|---|---|---|---|---|---|
| Polyester | PE | 450-600 | 130°C | 150°C | Good resistance to oxidation,while limited resistance toacids and alkalis. Service lifewill be affected by hydrolysisat high temperature. |
| Polyacryinitrile Homo polymer | PAC | 500-550 | 130°C | 150°C | Good resistance to hydrolysis. |
| Polypropylene | PPS | 500-650 | 160°C | 190°C | Moderate resistance to oxida-tion, but excellent resistance toacids, alkali's and hydrolysis. |
| m-Aramide | Nomex/Conex | 400-600 | 204°C | 250°C | Service life will be affectedby hydrolysis at high tem-perature. |
| Polyimide | PI/P84 | 750-800 | 240°C | 260°C | Excellent resistance to highpeak temperature. |
| Polytetrafluoro ethylene | PTFE | 500-550 | 240°C | 260°C | Excellent resistance to allchemical influences. |
| Fiberglass | GL | 750-900 | 240°C | 260°C | Excellent resistance to oxida-tion. Sensitive to mechanicalstress. |
Post Treatment：Heat Setting /Singeing /Glazing /Dipping /MembranerWater and Oil Proof / Low Adhesion
Construction：Heat-Sealed / Ultrasonic Welded or Triple-Stitched Seams
Top Design:Snap Band, Flange Top, Corded, or Open Top
Bottom Design:Reinforced Flat Bottom or Circular Disc Bottom
Non-woven filter bags by Industry Application
Different industries produce different dust characteristics — temperature, moisture, abrasiveness and corrosion.We recommend filter media based on real operating conditions.
Steel & Metallurgy
Cement & Building Materials
Power Generation
Waste Incineration
Chemical & Mining
Asphalt Mixing Plants
Key Features
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High Filtration Efficiency: The needle-felt structure captures fine particles throughout the depth of the media, not just on the surface.
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Thermal Stability: Available in various fibers to operate in temperatures ranging from 90°C (194°F) up to 260°C (500°F).
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Custom Surface Treatments:
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Singed & Calendered: For easy dust cake release.
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Water & Oil Repellent: To prevent blinding in moist or oily conditions.
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PTFE Membrane: For ultra-fine emission control (near-zero emissions).
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Antistatic: Integrated conductive fibers for explosive dust environments.
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Extended Service Life: Reinforced wear strips and heavy-duty stitching prevent premature failure at the cage contact points.
Frequently Asked Questions (FAQ)
Q1: How do I choose between Polyester and Polypropylene for low-temperature applications?
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Polyester (PE): Best for general dry dust. It has higher mechanical strength and can handle higher temperatures (up to 130°C).
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Polypropylene (PP): Best for environments with high chemical volatility. If your dust is highly acidic or alkaline and the temperature stays below 90°C, PP is the superior choice due to its near-total chemical inertness.
Q2: What is “Hydrolysis” and why does it matter for filter bags?
Hydrolysis is a chemical breakdown caused by the combination of moisture and high heat.
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Materials at risk: Nomex (Aramid) and Polyester.
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The Solution: If you have high humidity in your flue gas, you should opt for PPS or PTFE, which are naturally resistant to moisture-driven degradation.
Q3: When should I use an “Antistatic” (Epitropic) filter bag?
You should use antistatic bags if you are handling combustible or explosive dust (such as flour, coal dust, or certain powdered chemicals). These bags contain conductive fibers (usually stainless steel or carbon) to prevent static discharge that could ignite a fire.
Q4: What are the benefits of “Singed” vs. “Glazed” finishes?
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Singed: Removes loose surface fibers, making it easier for the “dust cake” to release during cleaning.
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Glazed (Calendered): Uses high-pressure heated rollers to create a very smooth surface. This provides the best dust cake release and is excellent for fine, sticky particles.
Q5: How often should filter bags be replaced?
While life cycles vary by industry, most non-woven bags last 1 to 3 years. Signs that you need a replacement include:
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High Pressure Drop: The differential pressure stays high even after cleaning cycles.
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Emission Leaks: Visible dust coming from the stack.
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Brittleness: The fabric loses its flexibility due to chemical or thermal aging.
Q6: Can I wash non-woven filter bags?
Generally, no. Most industrial non-woven bags are designed for dry pulse-jet cleaning. Washing can collapse the pore structure of the felt and strip away essential chemical treatments (like oil/water repellent coatings), significantly reducing filtration efficiency.