Metax Filter Bags are high-performance filtration media manufactured by BWF Group (Germany), designed for extreme industrial dust collection applications. Utilizing advanced needle felt technology, they deliver exceptional filtration efficiency (>99.99%), low pressure drop, and extended service life in demanding environments.
A high-performance filter media engineered for extreme thermal stability and chemical resistance. Leveraging Metamax fiber, it delivers exceptional temperature resistance, outstanding dimensional stability, fire retardancy, and chemical durability.
Fire Retardancy: Self-extinguishing (LOI 30), non-combustible up to 400℃.
Chemical Durability: Resists low-concentration acids/alkalis and most hydrocarbons, including minor fluorides.
Performance Benefits
Exceptional chemical resistance to acidic and oxidative environments
Customizable for any application requirements
High dust-holding capacity and low pressure drop
Compliant with international quality and safety standards
Key Applications
Widely used in high-temperature dust collection for:
Asphalt Mixing
Cement Kilns
Steel Smelting
Non-Ferrous Metal Refining
Product Specifications
Temperature Resistance
Continuous: 204°C; Instant: 240°C
Fiber
Metamax Fiber
Weight
500 gsm
Thickness
1.8 mm
Air Permeability
200–350 L/m²·s
Fire Retardancy
Self-extinguishing (LOI 30)
Operation Guide
1
Pre-installation Inspection
Inspect the Metamax filter bag for any signs of damage, such as tears or holes. Ensure compatibility with your filtration system and operating conditions.
2
Proper Installation
Handle the filter bag with care to avoid damage. Install according to manufacturer specifications, ensuring proper tension and sealing to prevent bypass and ensure optimal filtration efficiency.
3
System Startup
Gradually increase temperature and airflow to allow the filter bag to condition. Monitor pressure differentials and adjust as needed to ensure stable operation.
4
Regular Maintenance
Monitor system performance regularly. Conduct visual inspections and replace the filter bag when pressure differentials exceed recommended levels or signs of wear are evident.
Avoid exposing the Metamax filter bag to temperatures exceeding its maximum rating of 240°C. Ensure proper ventilation and cooling systems are in place to maintain safe operating temperatures.
Handling Precautions
Wear appropriate protective clothing, gloves, and respiratory protection when handling filter bags. Avoid inhaling dust or fibers generated during cutting or installation.
Chemical Exposure
While the Metamax filter bag has good chemical resistance, prolonged exposure to certain chemicals may degrade performance. Refer to chemical compatibility charts for specific applications.
Safety Certifications
ISO 9001:2015
CE Certification
GB/T 6006.1
UL 94 V-0
Technical Parameters
Core Specifications
Product Name
Metamax Needle Punched Felt
Fiber
Metamax Fiber
Weight (gsm)
500
Thickness (mm)
1.8
Air Permeability (L/m²·s)
200–350
Finish Treatment
Heat Setting, Singeing, Calendaring
Tensile Strength (Warp, N/5×20cm)
≥1300
Tensile Strength (Weft, N/5×20cm)
≥1450
Tensile Elongation (Warp, %)
<50
Tensile Elongation (Weft, %)
<55
Operating Temp. (Continuous, °C)
204
Operating Temp. (Instant, °C)
240
Chemical Properties
Acid Resistance
Excellent
Alkali Resistance
Excellent
Abrasion Resistance
Good
Hydrolysis Stability
Fair
Additional Features
Fire Retardancy
Self-extinguishing (LOI 30)
Thermal Shrinkage
<1% at 250℃
Non-Combustibility
Up to 400℃
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Confused about dust removal equipment? Need to extend filter bag life? Mingkai's tech tips cover selection, maintenance, and policies to help you manage equipment, ensure compliance, and cut costs.
Environmental Equipment O&M Insights
Confused about dust removal equipment? Need to extend filter bag life? Mingkai's tech tips cover selection, maintenance, and policies to help you manage equipment, ensure compliance, and cut costs.
Filter Bag Maintenance: Extend Life, Cut Costs
Regular maintenance of filter bags extends their lifespan and cuts costs by preventing clogs, saving energy, and reducing replacement needs.
Filter Bag Maintenance: Extend Life, Cut Costs
Regular maintenance of filter bags extends their lifespan and cuts costs by preventing clogs, saving energy, and reducing replacement needs.
Efficient Dust Removal: Save Cost & Time
Mingkai's combination of dust filter bags and equipment efficiently intercepts industrial dust, reducing equipment wear - and - tear. Simplify the dust - cleaning process, free up production line space, and help enterprises cut operation and maintenance costs while improving production efficiency. Button: Free Solution Consultation
Efficient Dust Removal: Save Cost & Time
Mingkai's combination of dust filter bags and equipment efficiently intercepts industrial dust, reducing equipment wear - and - tear. Simplify the dust - cleaning process, free up production line space, and help enterprises cut operation and maintenance costs while improving production efficiency. Button: Free Solution Consultation
Custom env solutions for precise needs.
Mingkai customizes dust-removal systems for high-temp coking plants, humid textile workshops, etc., adapting filter bag materials and equipment structures to unique needs.
Custom env solutions for precise needs.
Mingkai customizes dust-removal systems for high-temp coking plants, humid textile workshops, etc., adapting filter bag materials and equipment structures to unique needs.
See How Pollution Problems
Want to know how Mingkai equipment performs in actual working conditions? Browse cases in industries such as chemical and electric power, and learn how enterprises use our dust removal solutions to optimize production lines and solve the problem of coordinating environmental protection and production. Button: View Customer Cases
See How Pollution Problems
Want to know how Mingkai equipment performs in actual working conditions? Browse cases in industries such as chemical and electric power, and learn how enterprises use our dust removal solutions to optimize production lines and solve the problem of coordinating environmental protection and production. Button: View Customer Cases
High dust load & continuous production (e.g., sintering workshop in steel mills)
Choose high - dust - holding filter bags + strong - load cage frames → Reduce bag - changing frequency (cut labor and shutdown losses), stably support production line operation.
Space - constrained & fine dust (e.g., electronics factory grinding workshop)
Choose pleated cartridges + custom brackets → Achieve high - efficiency filtration (precision ≤1μm) in limited space, suitable for low - air - volume, high - precision needs.
Superior to heart
More than 10 precision production line, easy to realize large quantities of goods, to provide you with the best price.
FAQs
Can I test Mingkai's filter bags before purchasing?
Yes. We offer free sample testing for filter bags. You can evaluate filtration efficiency, material durability, and compatibility with your dust - laden airflow in your actual working conditions.
Can Mingkai customize the dimensions of dust bag cages?
Absolutely. Our bag cages support custom - made lengths, diameters, and ring spacings. Just provide your filter housing specs or application requirements, and we’ll tailor the structure for a perfect fit.
Can dust filter cartridges replace filter bags in my existing system?
It depends on your equipment design. If space and airflow allow, we can conduct a free on - site assessment. For systems with limited vertical space, cartridges (with compact structure) are often a viable upgrade option.
What’s the maximum temperature Mingkai's filter bags can withstand?
It varies by material. For example: PTFE bags handle up to 260℃ continuously; Aramid (Nomex®) resists 220℃; For extreme 280℃+ scenarios, we recommend FMS composite materials.
How long does the anti - corrosion coating on dust bag cages last?
Our standard galvanized cages last 3–5 years in general industrial environments. For harsh corrosive conditions (e.g., chemical plants), we offer epoxy - coated or stainless - steel options, extending service life to 8–10 years.
ONE-STOP SERVICE
We are dedicated to a one-stop solution for environmental protection dust collection. Our services cover dust collection system design, production of dust filter bags and cage frames, installation & commissioning, as well as after-sales maintenance, etc.
