Adding an ePTFE membrane to an aramid 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.
Our Aramid (Nomex) filter bags are specially designed for high-temperature and abrasive dust collection applications. They are widely used in cement kilns, asphalt mixing plants, and iron & steel processing. Engineered for durability, thermal resistance, and long service life.
Aramid filter bags are commonly used in various industrial applications for their exceptional strength, durability, and heat & chemical resistance. They are particularly suitable for high-temperature applications.
| Characteristics | Rating |
|---|---|
| Fiber Content | 100% Virgin Aramid |
| Weight | 475g/m² (14oz/yd²) |
| Thickness | 1.91mm (0.075in) |
| Fabric Construction | Needlefelt |
| Continuous Operating Temperature | 204°C (400°F) |
| Maximum Surge Temperature | 250°C (482°F) |
| Abrasion Resistance | Good |
| Acid Resistance | Good |
| Alkali Resistance | Good |
| Moist Heat Resistant | Good |
| Energy Absorbsion | Good |
| Filtration Property | Excellent |
| Oxygen (15%+) | Poor |
Aramid Filter Bags for Different Operating Conditions
Aramid Filter Bags for Different Operating Conditions
Aramid Filter Bags for Different Operating Conditions
Aramid Filter Bags for Different Operating Conditions
Aramid filter media can be constructed and treated with various options so that they become best suited for various operating conditions, applications, and industries.
The filter media is coated in a bath or spray of liquid PTFE resin. This is done to protect filter bags. The treatment improves the flex life, heat and chemical resistance, and dust release from the filter bags. This increases the service life and filtration efficiency. PTFE finish is commonly used in applications with corrosive chemical compounds, sticky dust, or high moisture contents.
This aids in filtration, adds resistance to water and oils, and improves cake release.
Helps to ground the filter bag to eliminate sparks that might cause combustion explosions.
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.
Through a post-treatment process, we apply a specialized chemical solution (developed in-house) to the filter media, which imparts enhanced water and oil repellency.
No Treatment
Regular Water & Oil Repellence
Reinforced Low Adhesion
Enhanced Dust Release Property
Better Water & Oil Repellency
Effective under High Temperature
Finer fibers and optimized fiber entanglement have contributed to superior pore size and porosity of the filter media.
Seam Design
Double-stitched seams using high-temperature resistant threads.
Top and Bottom Configurations
Available in various designs, including snap band, ring top, and flange top for easy installation and secure fitting.
Support Rings
Integrated support rings or other reinforcement structures to maintain bag shape and ensure optimal airflow.
Finish Treatment
Singeing, Calendering, Heat Setting, Anti-static, Water&Oil Repellent, PTFE Membrane, PTFE Impregnation and so on special treatment can be chosen.
🛣️ Asphalt Mixing Plants
🔧 Steel & Metallurgy
🧪 Chemical & Mining
⚡ Power Generation
New energy sector
🏗️ Cement & Building Materials
We also provide various high-quality filter cages, filter bags, and other accessories to offer you a one-stop dust removal solution.
Our filter cages are made from carbon steel or stainless steel with smooth surface treatment to prevent filter bag abrasion. Multiple types available, including round, oval, envelope, and star-shaped designs.
With our needle felt filter media, filter bags, cages, and accessories, we deliver complete dust filtration solutions from design to manufacturing and after-sales support.
Aokai Environtec is a leading manufacturer of baghouse filter cloth, filter bags,filter cage. 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.
With a fully integrated intelligent production line and a lean manufacturing system, we ensure complete quality control at every stage of the process—from raw material research and development to the final delivery of finished products.
Our stringent quality assurance framework includes 23 specialized testing procedures, all designed to guarantee stable performance and consistent quality. This comprehensive approach helps us deliver reliable, high-performing products tailored to meet the demands of various industrial environments.
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.
We are equipped with advanced testing instruments including:
Media Selction
Failure Analysis
Dust Property Analysis
Bag Inspection
Fiber Inspection
Lifespan Analysis
