Aokai supplies polyester filter cloth for industrial dust filtration, including polyester non woven filter cloth and polyester needle felt for baghouse filter bag manufacturing.
Polyester Needle Felt Filter Fabrics Key Properties:
- High Filtration Efficiency: Polyester has excellent particle retention, effectively capturing fine particles and dust.
- High Temperature Resistance: Polyester can withstand moderate temperatures, typically up to about 130-150°C (266-302°F).
- Mechanical Strength: It has good tensile strength and dimensional stability.
- Abrasion Resistance: The fabric is resistant to abrasion, prolonging its service life even in demanding filtration applications.
- Ease of Cleaning: Polyester needle felt can be cleaned and maintained easily, either through mechanical shaking, air pulsing, or washing.
For finished bag products, see our Polyester Filter Bags.
Water and oil repellent needle punched felt
Anti-static needle punched felt
Polyester Non Woven Filter Cloth
What is Polyester Non Woven Filter Cloth?
Our polyester non woven filter cloth (also widely known as polyester needle felt) is a premier depth-filtration medium engineered from 100% high-grade polyester (PET) staple fibers. Unlike woven fabrics that rely on simple surface sieving, this non-woven media is manufactured using advanced needle-punching technology. Millions of microscopic fibers are mechanically entangled to form a highly porous, three-dimensional tortuous path.
This unique structures allows dust and liquid particles to be captured throughout the depth of the fabric rather than just on the surface. To ensure structural stability under high tension, a high-tenacity polyester scrim is embedded in the center of the felt. It is the ultimate high-efficiency material for industrial dust collectors and is the core raw material used to fabricate durable polyester needle felt filter bags.
Common Types of Polyester Needle Felt
Aokai can customize polyester needle felt filter bags according to your dust collector type, bag size, cuff style, bottom design, dust characteristics and emission requirements. The base polyester non woven filter cloth can be adjusted by weight, air permeability, surface treatment and finishing method before being processed into finished filter bags.
Anti-Static Polyester Needle Felt
Anti-static polyester needle felt filter bags are designed for dust collection applications where static electricity may create safety or operational risks. Conductive fibers or anti-static treatment can be applied to the polyester non woven filter cloth before the finished bags are made.
Learn more about Anti-Static Needle Felt
PTFE Membrane Polyester Needle Felt
PTFE membrane polyester filter bags are made by laminating a PTFE membrane onto polyester needle felt. The membrane creates a surface filtration layer that helps capture fine dust particles and improve dust release.
Learn more about PTFE Membrane Needle Felt
Water & Oil Repellent Polyester Needle Felt
Water and oil repellent polyester filter bags are treated to improve resistance against moisture, oily particles and sticky dust. This treatment helps reduce clogging and supports better dust release during cleaning.
Learn more about Water & Oil Repellent Needle Felt
Polyester Non Woven Filter Cloth Technical Specifications
| ITEM | PE155 | PEF155 | PEF953 |
|---|---|---|---|
| Working temperature (°C) | 130 | 130 | 130 |
| Peak temperature (°C) | 150 | 150 | 150 |
| Emission (mg) | / | 10 | 5 |
| Weight (g/m2) | 550±5% | 550±5% | 530±5% |
| Thickness (mm) | 2.2±10% | 2.2±10% | 1.9±10% |
| Air permenability (m3/m2/min@200Pa) | 14±20% | 12±20% | 13±20% |
| Tensile strength/ warp（N/5cm） | ≥1000 | ≥1000 | ≥1000 |
| Tensile strength / weft（N/5cm） | ≥1400 | ≥1400 | ≥1400 |
| Tensile elongation / warp（%） | ≤35 | ≤35 | ≤35 |
| Tensile elongation / weft（%） | ≤50 | ≤50 | ≤50 |
| 24-hour heat shrink / warp（%） | ≤1.5 | ≤1.5 | ≤1.5 |
| 24-hour heat shrink / weft（%） | ≤1.0 | ≤1.0 | ≤1.0 |
| Standard Width (mm) | 2270 | 2270 | 2270 |
*Note: The following model names (PE155, PEF155, PEF953) are Aokai’s proprietary product codes. They represent different polyester filter bag specifications for industrial dust collection.
Polyester Filter Cloth Surface Treatments
The surface treatment of polyester filter cloth can significantly affect dust release, moisture resistance, conductivity and long-term baghouse performance.
Heat Setting
Heat setting is a thermal stabilization process performed under controlled temperature and tension.
- Improve dimensional stability.
- Reduce shrinkage at high temperatures.
- Enhance mechanical strength.
- Maintain stable pore structure.
Calendering
Calendering is a mechanical finishing process in which the fabric surface is pressed between heated rollers.
- Smooth the surface.
- Reduce surface fiber fuzz.
- Control pore size distribution.
Singeing
Singeing involves briefly exposing the fabric surface to a controlled flame or high-temperature source.
- Remove loose surface fibers.
- Prevent fiber shedding.
- Improve surface smoothness.
PTFE Membrane Lamination
PTFE membrane lamination involves bonding a microporous PTFE membrane to the surface of the needle felt.
- Achieve surface filtration instead of depth filtration
- Improve particle capture efficiency
- Reduce dust penetration
Water & Oil Repellent Treatment
This chemical finishing process applies hydrophobic and oleophobic agents to the fiber surface.
- Prevent moisture absorption.
- Avoid mudding and clogging.
- Reduce hydrolysis risk.
Anti-Static Treatment
Antistatic properties can be achieved by incorporating conductive fibers or coating with a conductive chemical coating.
- Prevent static charge accumulation.
- Reduce spark risk.
- Improve operational safety.
Typical Applications of Polyester Needle Felt
*For a broader material selection guide, see our Filter Bag Material Comparison.
When Should Polyester Filter Media Not Be Used?
| Operating Condition | Why Polyester May Not Be Suitable |
|---|---|
| Continuous temperature above approximately 130°C | Polyester may soften, shrink or lose long-term performance |
| High-temperature moisture or steam | Increased hydrolysis risk |
| Severe condensation | May cause mudding, clogging and premature bag failure |
| Strong alkaline chemical conditions | Polyester can be affected by alkaline hydrolysis |
| Highly corrosive gas composition | Requires detailed chemical compatibility review |
| High oxygen and high temperature | May require higher-performance material selection |
| Abrasive dust with severe mechanical wear | May need reinforced or specialized filter |
Testing & Quality Control
From certified laboratory performance to rigorous process tracking, we ensure every filter bag you receive is reliable, fully verifiable, and 100% traceable.
01
Performance Tested
Raw materials are tested in our laboratory for 13 key performance indicators, such as fiber composition, air permeability, tensile strength, elongation at break, thermal shrinkage, moisture content, oil content, and fiber melting point.
Equipment Verification>
02
Process Guaranteed
More than 10 production inspection procedures, including automated high-precision laser cutting, ultrasonic welding, and standardized process control, ensure consistent manufacturing stability and product quality.
Process Stability>
03
Management Controlled
We are certified with a full set of international management system certifications, including ISO 9001, ISO 14001, and ISO 45001, ensuring strict quality control, eco-friendly production, safe manufacturing, and reliable performance for all our products.
ISO Certified Control>
04
Traceable & Verifiable
Quality records are kept for over 3 years, with electronic records retained permanently to ensure full batch traceability.
Delivering Certainty√
Why Partner with Aokai？
As a professional industrial filter bag manufacturer in China,Aokai provides customized dust collector filter bags for global industrial customers, relying on high-quality filter material selection, advanced production processes, and professional filter bag manufacturing equipment. Helping companies achieve efficient purification, compliant emissions, and improved production quality.
Our flexible supply chain management facilitates fast response-time to meet customer requirements and market changes.
01
Raw Material
Supplier Diversification, Material Sustitutability
02
Inventory
Dynamic Forecasting, Key Material Stockpiling
03
Collaboration
Collaborative Demand Forecasting, Custom Solutions
04
Manufacturing
Quick Line Changeover & Production Switching Multi-Skilled Workforce,
05
Warehousing
Efficient Space Utilization, Rapid Turnover
06
Shipping & Delivery
Alternative Transportation Solutions, Quick Turnaround Order
Serving 10,000+ clients worldwide,Exported to more than 40 countries and regions worldwide.
We actively participates in the global supply chain service market, and we are committed to providing customers with high-quality products and services to promote local economic development.
OEM Market
Maintenance Market
HELP & SUPPORT
Technical FAQ
Yes. In industrial dust filtration, polyester non woven filter cloth is commonly referred to as polyester needle felt, PET needle felt or polyester filter media.
Yes. Aokai can supply polyester needle felt roll goods in customized widths, weights, thicknesses and surface finishes.
Yes. Aokai can customize polyester needle felt filter bags according to diameter, length, cuff type, bottom structure, sewing method, surface treatment, air permeability and emission requirements. Custom filter bags can be designed for pulse jet, reverse air and shaker dust collector systems.
Yes. We can supply both polyester filter media rolls and finished polyester filter bags with customized dimensions, snap bands, cuffs, rings and bottom configurations.
Yes. PTFE membrane laminated polyester needle felt is available for applications requiring improved fine-dust capture and dust release performance.
Polyester filter media is generally suitable for normal-temperature applications. For continuous temperatures above approximately 130°C, evaluate high-temperature materials such as Aramid, PPS, P84, PTFE or fiberglass.
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