Our Glass Fiber Needle Punched Felt is engineered for high-temperature filtration applications. With exceptional chemical resistance and dimensional stability, it provides reliable performance in harsh industrial environments. The unique needle-punched structure ensures uniform density and excellent dust release properties, making it ideal for demanding filtration challenges.
Product Advantages
High-temperature resistance up to 260°C (500°F)
Excellent chemical resistance to acids and alkalis
Low thermal shrinkage for dimensional stability
Needle-punched structure for uniform density and high strength
Good dust release properties for efficient cleaning
Available in various thicknesses and weights to suit different applications
Customizable surface treatments for enhanced performance
Material Properties
Base Material: 100% high-quality E-glass or S-glass fibers
Filtration Efficiency: Up to 99.9% for particles >1μm
Production Capacity
Daily Output: 5,000-8,000 square meters, depending on specifications
Standard Width: 1.5m - 2.0m, Custom widths available upon request
Key Applications
Ideal for high-temperature industrial filtration applications:
Power Plants
Cement Production
Steel Mills
Waste Incineration
Product Specifications
Weight Range
500-1000 g/m²
Thickness
1.5mm - 3.0mm
Width
1.5m - 2.0m (customizable)
Surface Treatment
PTFE membrane, silicone coating, calendering
Tensile Strength
Longitudinal ≥1200N/5cm, Transverse ≥800N/5cm
Temperature Resistance
Continuous: 260°C (500°F), Peak: 280°C (536°F)
Operation Guide
1
Pre-installation Inspection
Inspect the Glass Fiber Needle Punched Felt for any signs of damage, such as tears or holes. Ensure the material is suitable for your specific application in terms of temperature, chemical resistance, and filtration requirements.
2
Installation
Carefully cut the felt to the required dimensions using appropriate tools. Ensure proper tension during installation to prevent sagging. Use compatible fasteners and ensure all seams are properly sealed.
3
System Startup
Gradually increase the temperature and flow rate to allow the felt to stabilize. Monitor the system pressure and filtration efficiency during the initial startup phase.
4
Cleaning and Maintenance
Establish a regular cleaning schedule based on operating conditions. Use appropriate cleaning methods (e.g., pulse-jet cleaning, reverse air cleaning) to maintain optimal performance. Inspect the felt periodically for signs of wear and replace as needed.
Operation Checklist
Verify compatibility with your filtration system
Ensure proper tension during installation
Monitor system pressure and temperature regularly
Follow recommended cleaning and maintenance procedures
Safety Regulations
Handling Precautions
Wear appropriate protective clothing, gloves, and eye protection when handling glass fiber materials. Avoid inhaling fiber dust by using proper ventilation or respiratory protection.
Installation Safety
Ensure the filtration system is shut down and depressurized before installation or maintenance. Follow proper lockout/tagout procedures to prevent accidental startup.
High-temperature Safety
Allow the system to cool completely before performing any maintenance. Use heat-resistant gloves and tools when working with hot components.
Safety Certifications
ISO 9001:2015
ISO 14001:2015
CE Certification
RoHS Compliance
Technical Parameters
Core Specifications
Product Name
Glass Fiber Needle Punched Felt
Model
GF-NPF Series
Weight Range
500-1000 g/m²
Thickness
1.5mm - 3.0mm
Width
1.5m - 2.0m (customizable)
Base Material
E-glass or S-glass fibers
Surface Treatment
PTFE membrane, silicone coating, calendering
Air Permeability
8-25 m³/m²/min (at 200Pa)
Chemical Properties
Acid Resistance
Good resistance to most acids except hydrofluoric acid
Alkali Resistance
Moderate resistance to weak alkalis
Oxidation Resistance
Excellent resistance to oxidation
Thermal Characteristics
Temperature Resistance
Continuous: 260°C (500°F), Peak: 280°C (536°F)
Thermal Shrinkage
≤1% at 260°C for 30 minutes
Thermal Conductivity
0.035-0.045 W/(m·K)
Mechanical Properties
Tensile Strength
Longitudinal ≥1200N/5cm, Transverse ≥800N/5cm
Elongation at Break
Longitudinal ≤3%, Transverse ≤5%
Bursting Strength
≥1000 kPa
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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.
