Wuxi Mingkai’s Acrylic Needle Punched Felt Filter Bag is designed for 125-140℃ dust gas purification, resisting acid/alkali corrosion with good hydrolysis stability. Made of 550gsm acrylic fiber (2.3mm thickness), it features high tensile strength (>900N warp, >1400N weft) and excellent abrasion resistance. Post-treated with singeing/calendering, it suits industrial dust systems. Daily capacity: 1500-2000pcs, customizable for any specs.
Our Acrylic Filter Bag is designed for high-efficiency filtration in environments with temperatures ranging from 125°C to 140°C, relative humidity between 30% and 80%, and containing dust gases with certain acid and alkali corrosiveness. Constructed with acrylic fibers and a durable acrylic base fabric, these filter bags offer excellent resistance to common industrial chemicals and maintain high filtration efficiency even in challenging conditions.
Product Advantages
Excellent performance in 125°C to 140°C temperature range
Good resistance to acid and alkali corrosion
High tensile strength for durability
Excellent hydrolysis stability
Superior abrasion resistance
Structural Design
Acrylic fiber with acrylic base fabric construction
Needle-punched for enhanced filtration efficiency
Post-treatment including singeing, calendering, and heat setting
Uniform structure for consistent performance
Production Capacity
Daily Output: 1500-2000 pieces of Φ160×6000mm acrylic needle-punched filter bags
Custom specifications and sizes available upon request
Key Applications
Ideal for industrial environments requiring efficient dust collection in moderate temperature and chemically aggressive conditions:
Textile Industry
Food Processing
Chemical Production
Pharmaceutical Manufacturing
Product Specifications
Temperature Resistance
Continuous: ≤125°C; Instant: ≤140°C
Material
Acrylic fiber + Acrylic base fabric
Weight
550 g/m² ±5%
Thickness
2.3 ±0.1 mm
Air Permeability
12 ±20% m³/m²·min @127pa
Filtration Velocity
＜1.2 m/min
Operation Guide
1
Pre-installation Inspection
Inspect the filter bag for any damage to the fabric or stitching. Ensure the bag dimensions match your filter housing specifications. Check the sealing surface for any defects that could cause leaks. Verify the integrity of the acrylic material and ensure it is suitable for your operating environment.
2
Proper Installation
Gently insert the filter bag into the cage, ensuring the fabric is not twisted or folded. Secure the bag to the tube sheet according to manufacturer instructions, ensuring a tight seal. Avoid over-tightening, which may damage the bag. Ensure proper alignment to prevent uneven airflow distribution.
3
System Startup
Gradually increase the system airflow to allow the bag to seat properly. Monitor differential pressure readings to ensure normal operation. Avoid sudden pressure surges, which may damage the fabric. Ensure the operating temperature does not exceed the recommended limits for acrylic material.
4
Regular Maintenance
Perform routine visual inspections for signs of wear, damage, or clogging. Monitor temperature and pressure differentials to detect any abnormalities. Clean or replace bags as needed to maintain filtration efficiency. Adjust cleaning cycles based on operating conditions to optimize performance. Be aware of the acrylic material's sensitivity to strong oxidizing agents.
Operation Checklist
Verify bag dimensions and compatibility
Inspect for signs of damage or wear
Monitor temperature and pressure differentials
Ensure proper cleaning cycles
Safety Regulations
Temperature Caution
Avoid exposing the filter bag to temperatures exceeding 140°C, as this may damage the acrylic material. Prolonged exposure to temperatures above 125°C may reduce service life and filtration efficiency. Ensure proper temperature monitoring during operation.
Handling Precautions
Wear gloves and protective clothing when handling filter bags to prevent damage to the fabric. Store bags in a dry, clean environment away from direct sunlight and chemicals. Avoid sharp objects that could puncture or tear the fabric. When handling in chemically aggressive environments, ensure compatibility with acrylic material.
Chemical Exposure
Acrylic material has good resistance to acids and alkalis, but it has poor resistance to strong oxidizing agents. Avoid prolonged exposure to strong oxidizing environments. In chemically aggressive environments, consult with our technical team for suitable material recommendations. Monitor chemical composition of the filtered gas stream.
Safety Certifications
ISO 9001:2015
ISO 14001:2015
CE Certification
Industry Safety Standards
Technical Parameters
Core Specifications
Product Name
Acrylic Needle-punched Felt
Material
Acrylic fiber + Acrylic base fabric
Weight (gsm)
550 g/m² ±5%
Thickness (mm)
2.3 ±0.1 mm
Air Permeability (m³/m²·min)@127pa
12 ±20%
Filtration Velocity (m/min)
＜1.2
Surface Treatment
Singeing, calendering, high-temperature setting
Continuous Operating Temp.
≤125°C
Instant High Temp.
≤140°C
Physical Properties
Tensile Strength (N/5×20cm)
Warp: > 900 Weft: > 1400
Tensile Elongation (%)
Warp: < 35 Weft: < 55
Dimensional Stability
Excellent
Abrasion Resistance
Excellent
Chemical Properties
Anti-acid
Good
Anti-alkali
Good
Anti-oxidation
Poor
Hydrolysis Stability
Good
Abrasion Resistance
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.
