Polyester Filter Bags
Excessive dust emissions and frequent bag clogging? High replacement costs and unstable filtration efficiency? Need a reliable, cost-effective solution for dry conditions?
We understand your challenges. Polyester filter bags are the most popular choice in industrial dust collection—offering excellent value, long lifespan, and helping factories reduce operating costs by over 20%.
- High Strength & Durability – Polyester fiber provides excellent mechanical strength, extending service life even under frequent pulse cleaning cycles.
- Cost Efficiency – As one of the most economical filter materials, polyester balances affordability with performance.
- Consistent Filtration – Maintains stable air permeability and filtration efficiency across its lifespan.
- Versatile Application – Suitable for various industries handling dry dust or low-moisture environments.
Various Polyester Filter BagsShowcase
- Anti-Static Polyester Filter Bag
Blended with conductive fibers or carbon coating to safely discharge static electricity – Prevents explosion risks from static sparks in flammable dust
- Water & Oil Repellent Polyester Filter Bag
Fluoride coating for water and oil repellency, resistant to moisture and oil mist – Solves hydrolysis failure and rapid clogging in humid/oily conditions, significantly improving stability and lifespan.
- PTFE Membrane Laminated Filter Bags
Surface hot-laminated with microporous PTFE membrane, achieving 99.99% filtration efficiency, ultra-low emissions, and extremely easy cleaning – Completely solves issues of fine dust emission exceedance and frequent replacements, extending lifespan 3x or more.
- High Efficiency Microfiber Polyester Filter Bag
Ultra-fine microfiber structure with strong capture capability for submicron fine dust – Targets ultra-fine dust, significantly improving filtration efficiency and reducing the burden on downstream purification.
Technical Specifications
|
Parameter |
Details |
|---|---|
|
Material |
100% Polyester Fiber |
|
Weight |
400-650 g/m² |
|
Thickness |
1.6-2.2 mm |
|
Operating Temperature |
≤150°C (302°F) |
|
Air Permeability |
10-20 m³/m²/min |
|
Length&diameter |
No Limited |
We offer full customization to perfectly match your dust collection equipment needs.
Needle Felting Treatment
To further enhance performance, we provide a series of advanced post-treatment processes that improve fabric durability, filtration efficiency, and adaptability to various working conditions.
Prevents shrinkage and stabilizes fabric structure at working temperatures.
Normal bags build up 30,000+ volts in high-velocity airflow. One spark → explosion.
We embed conductive stainless steel/carbon fibers throughout the felt. Volume resistivity ≤ 10⁶ Ω·cm – static dissipates in 0.3 seconds.
Adding an ePTFE membrane to a polyester filter bag allows the membrane to act as the filter cake. Dust stays on the surface of the membrane and does not get entrained into the fibers of the filter bag, which lengthens the life of your filter bag. It also reduces wear and tear, lower maintenance costs, and energy costs due to easy dust cake release during the cleaning cycle.
This coating adds resistance to water and oils, and improves cake release.
Singeing is a finishing process where the surface of the filter media is exposed to a flame or hot gas to burn off the fine and straggly fibers in order to provide a uniform and smooth surface area, which improves dusk cake release, enhanced filtration efficiency, and better air permeability.
The singeing process typically involves passing the fabric over an open flame or through a heated chamber. The heat singes off the protruding fibers without damaging the main structure of the fabric. The process parameters, such as speed and temperature, are carefully controlled to achieve the desired level of smoothness and finish.
Glazing, also known as calendering, is the high-pressure pressing of the fabric by rollers to flatten or smooth the surface. Glazing pushes the surface fibers down onto the body of the filter media to increase and uniform surface life, improve stability, reduce shrinkage, and improve dust cake release.
Proven in Diverse Industries
Waste Incineration
New energy sector
Cement & Building Materials
Pulp and paper industry
In dry conditions without acidic gases, polyester filter bags deliver stable performance, helping you reduce energy consumption, extend equipment lifespan, and easily meet environmental requirements.
We Craft Every Filter Cloth with Care
Our filter cloth are designed based on actual site conditions, not generic catalog assumptions. We help you select the right media to balance filtration efficiency, pressure drop, and service life.
Lean Intelligent Manufacturing
Raw Material Selection
Mixing and Pretreatment
Intelligent Spinning & Web Formation
Precision Needle Punching Molding
Heat Setting
Singeing Treatment
Membrane Lamination
water/oil repellency
Filter bag processing details
High quality seam designed for lowest emissions
Top and Bottom Configurations
Support Rings
Filter bag sewing technology
Pinhole Sealing Technology
Seamless Sewing Technology
TAP Lamination Technology
Related Products
We also provide various high-quality filter cages, filter bags, and other accessories to offer you a one-stop dust removal solution.
Our Manufacturing Strength
Aokai Environtec is a leading manufacturer of baghouse filter cloth, filter bags, and baghouse accessories. Founded in 2004 and headquartered in China, our products are used in a variety of applications and industries, including asphalt mixing plants, cement plants, mining operations, power generation plants, metallurgy industry, renewable energy industry, waste incineration plants, and other industrial facilities. Our mission is to make the world a cleaner and better place by protecting people, the planet, and production from the harmful effects of industrial processes.
1
Years of Experience
1
㎡ – Modern Production Base
1
Customers Worldwide
1
Exporting Country
3,000,000 pcs
Annual Filter Bag Production
- Automatic Multi-Task Production Lines
- Precision Sewing
- Heat Sealing
- Pinhole Sealing
- Seam Lamination
2,000,000 m
Annual Cage Production
- Filter Cages of All Shapes & Sizes
- Cage Treatments
- Silicone Coating
- Galvanizing
- Passivation (stainless steel)
Quality Control
Raw material quality control
The raw materials of Aokai have undergone tests for 13 indicators in the laboratory, including fiber composition, air permeability, breaking strength and elongation at break, thermal shrinkage, moisture regain, oil content, and fiber melting point, with all test standards surpassing the relevant criteria.
Production process quality control
The factory has obtained ISO9001 and ISO14001 certifications. It operates in accordance with the 7S management standards, strictly controls product quality in line with international high-end product testing standards, retains inspection records for more than 3 years and electronic records permanently, ensuring the traceability of each batch of products.
R&D Capability Advanced Laboratory
We use the state-of-the-art testing equipment and devices for raw material inspection, media selection, full-process production inspection, and new product development.
Germany FilTEq FEMA 1-AT Dust Filtration Efficiency Testing System
Japan Espec GPH-H20 High-Temperature Drying Oven
USA PMI CFP-1100AX Pore Size Analyzer
Switzerland FX3300-IV Air Permeability Tester
Netherlands Phenom Pure Scanning Electron Microscope
Media Selction
Failure Analysis
Dust Property Analysis
Bag Inspection
Fiber Inspection
Lifespan Analysis
Baghouse Efficiency and Effectiveness Analysis
Contact us to discuss your project and long-term filtration solutions.
All information will be kept confidential.