Manufactured from Sinopec Yizheng high-strength polyester fibers via high-frequency, dense, high-speed needle punching, complying with GB/T6719-2009 standard. These filter bags offer superior filtration precision and easy ash cleaning for a wide range of industrial applications.
Product Advantages
High porosity & density for superior filtration precision
Excellent air permeability and easy ash cleaning
Stable performance at ≤120°C (short-term ≤130°C)
Soft texture with high tensile strength
Material Properties
Glass transition temperature: ~80°C
Melting point: 255-265°C (starts softening at 230-240°C)
Heat-shrinkable fiber (strength loss at 170°C is recoverable)
Poor alkali resistance & hydrolysis stability
Production Capacity
Daily Output: 2000-3000 units of Φ130×6000mm bags (custom specifications available)
Key Applications
Widely used in various industries:
Steel Industry
Cement Plants
Power Plants
Mining
Product Specifications
Temperature Resistance
Continuous: ≤130°C; Instant: ≤150°C
Material
Polyester Fiber + Polyester Base Fabric
Gram Weight
500 ±5% g/m²
Thickness
1.9 ±0.1 mm
Air Permeability
14 ±20% m³/m²·min @127Pa
Filtration Velocity
<1.2 m/min
Operation Guide
1
Pre-installation Inspection
Inspect the polyester 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 polyester filter bag to temperatures exceeding its maximum rating of 150°C. Prolonged exposure to temperatures above 130°C may reduce service life.
Handling Precautions
Wear appropriate protective clothing and gloves when handling filter bags. Avoid inhaling dust or fibers generated during cutting or installation.
Chemical Exposure
Polyester has poor alkali resistance. Avoid prolonged exposure to alkaline substances and high-moisture environments above 100°C to prevent hydrolysis.
Safety Certifications
ISO 9001:2015
GB/T 6719-2009
CE Certification
RoHS Compliance
Technical Parameters
Core Specifications
Product Name
Polyester Needle Punched Felt
Material
Polyester Fiber + Polyester Base Fabric
Gram Weight (g/m²)
500 ±5%
Thickness (mm)
1.9 ±0.1
Air Permeability (m³/m²·min @127Pa)
14 ±20%
Filtration Velocity (m/min)
<1.2
Tensile Strength (Warp, N/5×20cm)
>1100
Tensile Strength (Weft, N/5×20cm)
>1200
Elongation at Break (Warp, %)
<35
Elongation at Break (Weft, %)
<55
Continuous Operating Temp.
≤130°C
Instant High Temp.
≤150°C
Chemical Properties
Acid Resistance
Good
Alkali Resistance
Poor
Oxidation Resistance
Fair
Hydrolysis Stability
Excellent
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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.
