Aokai is a filter cloth manufacturer -PTFE Filter Cloth -Polyester filter cloth

Industrial Filter Cloth Solutions for Dust Collection Systems

Our filter cloth are designed based on actual site conditions, not generic catalog assumptions. We help you select the right media to balance filtration efficiency, pressure drop, and service life.

Custom Material Selection

OEM Manufacturing

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Needle Punched Felt Filter Fabric

-Customized Solutions from AoKai ENVIRONTEC

As a leading manufacturer of needle-punched felts in China, AoKai ENVIRONTEC is committed to delivering first-class filtration solutions. With advanced production lines, strict quality control, and continuous R&D investment, we provide high-performance, customizable needle felts and filter materials for cement, steel, chemical, waste-to-energy, power generation, mining, and industrial dust collection. Our products are sold to regions worldwide, helping customers improve environmental performance and operational efficiency with stable, reliable, and cost-effective filtration solutions.

Material For Needle Punched Felt Filter Fabric

Nomex Needel Felt

Aramid(Nomex) Filter Cloth

Aramid filter cloth engineered for reliable high-temperature filtration with excellent thermal stability up to 240°C.

PTFE(Teflon) Filter Cloth

High temperature and chemical resistance up to 260°C. Ideal for waste incineration and chemical processing plants.

PPS Filter Cloth

Excellent resistance to acid, alkali, and moisture. Widely used in coal-fired boilers and thermal power stations.

Polymide (P84) Filter Cloth

Resistant to 280℃ high temperature with high filtration precision, it is specially designed for dust removal in waste incineration and cement kiln tail.

Woven fiberglass filter cloth

Fiberglass Needle Felt Filter Cloth

FiberGlass Filter Cloth

High-temperature Fiberglass Filter Cloth for industrial baghouse systems — stable filtration up to 260°C, low pressure drop, and long service life.

FMS Filter Cloth

FMS Filter Cloth handle 260°C+ with great abrasion and corrosion resistance—longer life, less hassle and cost in cement and steel plants.

Polyester Filter Cloth

Polyester Filter Cloth is a cost-effective and widely used filter media for standard temperature applications, with a continuous operating temperature up to 130°C(266°F) .

Acrylic Filter Cloth

Acrylic Filter Cloth is designed for industrial dust collection in humid and acidic environments, providing excellent hydrolysis resistance and stable long-term performance to reduce unexpected bag failure and downtime.

Anti-static Filter Cloth

Anti-static filter cloth safely dissipates static electricity, completely eliminating the risk of dust explosions and providing a more secure and stable dust removal solution for your industrial operations.

Water and oil repellent Filter Cloth

Water and oil repellent filter cloth is a high-efficiency filter material with excellent waterproof and oil-proof properties, effectively preventing paste and clogging.

PTFE+PPS Filter Cloth

PTFE+PPS Filter Cloth offers excellent chemical resistance and high-temperature durability for demanding dust collection

High-efficiency dust filter material with PTFE membrane laminated on needle felt, offering ultra-fine filtration, easy cleaning and long service life.

Specifications

Processing:	Calendering, heat setting, singeing, anti-static, water&oil repellent, PTFE membrane, Dipping, Heavy Singeing, Graphite Treatment, Low Adhesion
Thickness:	1 – 3mm or customized
Width：	2100mm-2430mm or 1650mm /1830mm
Gram Weight:	400-1000g/㎡ or customized
Shape:	Roll

Technical performance of needle-punched filter fabric

Different industrial processes require different filter media depending on temperature, chemical exposure, and dust characteristics.

The comparison below shows the temperature limits and chemical resistance of the most commonly used filter materials to help you quickly identify the suitable option for your baghouse system.

Material	Working Temperature	Instant Temperature	Abrasion Resistance	Hydrolysis Resistance	Acid Resistance	Alkali Resistance	Oxidation Resistance
Acrylic Needle Felt	130℃	150℃	Middle	Good	Good	Middle	Good
Polyester Needle Felt	130℃	150℃	Excellent	Poor	Middle	Fair	Good
PPS Needle Felt	160℃	190℃	Good	Excellent	Excellent	Excellent	Fair
Aramid Needle Felt	204℃	240℃	Good	Middle	Middle	Good	Middle
P84 Needle Felt	240℃	260℃	Good	Middle	Middle	Middle	Good
PTFE Needle felt	240℃	260℃	Good	Excellent	Excellent	Excellent	Excellent
Fiberglass Needle Felt	240℃	260℃	Fair	Good	Middle	Fair	Good
Woven Fiberglass Filter Cloth	240℃	260℃	Good	Good	Good	Good	Good

Surface Treatment Technologies

To improve filtration efficiency, dimensional stability, and service life, industrial needle felt is typically subjected to several post-treatment processes. These surface treatments enhance dust release, emission control, and resistance to harsh operating conditions.

Interested in other post-processing techniques? Feel free to reach out to us via email for more details.

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.

Applications

AoKai ENVIRONTEC provides customized felt filter cloths designed for abrasive, corrosive, high-temperature, and explosive dust filtration. Our solutions are widely utilized across various industrial and commercial sectors to deliver reliable filtration performance.

Waste Incineration

Renewable Energy

Asphalt Mixing

Power Generation

Cement

Non-Ferrous Metals

International Certifications

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. These global certifications back up our commitment to consistent quality, compliance, and customer trust.

ISO45001

ISO14001

ISO9001

Not Sure Which Filter Cloth Fits Your System?

Tell us your:

Operating Temperature
Dust Type & Particle Size
Gas Composition
Humidity Level
Existing Filter Media (if available)

Get Engineering Recommendation

Our engineers will recommend the optimal material and finishing treatment within 24 hours.

Aokai engineers are analyzing the operating conditions.

Our focus is not just supplying filter bags, but reducing your total filtration cost over time.

Quality & Consistency You Can Rely On

We have carried out industry university research cooperation with many top universities in China, and developed product series such as “Jiejingda“, “Cabture“, “CareClean” according to the specific working conditions of the industry.

We hold a total of 64 invention and utility patents.

High performance membraneless low resistance

Gradient structure high performance

High efficiency low resistance needle felt

Life prediction

High mechanical properties

Product digitization R&D

Low carbon and clean material research and development

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Consistent raw material sourcing

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Controlled manufacturing process

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Strict dimensional tolerance

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Each batch inspected before shipment

Serving 16,000+ clients worldwide,Exported to more than 40 countries and regions worldwide.our filter cloth is trusted across cement, steel, power, waste incineration, chemical, and asphalt industries.

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

From Sample Analysis to Engineered Filter Solutions

Our Services

Step 1

Sample Analysis & Application Review

Analyze fabric structure and material composition
Review wear patterns, clogging or failure reasons
Evaluate dust characteristics and operating conditions

Step 2

R&D & Material Engineering

Needle felt material selection and optimization
Fiber blend, weight and permeability design
Surface treatments (PTFE membrane, singeing, glazing)

Step 3

Filter Bag & Cage Design

Accurate size and construction
Cage wire layout and surface finishing
Compatible with pulse jet and cleaning systems

Step 4

Fast & Transparent Quotation

Material specification
Unit price & MOQ
Lead time and delivery terms

Step 5

Sampling & Confirmation

Custom samples for testing
Performance confirmation before mass production
Adjustments based on test feedback

Step 6

Manufacturing, QC & Delivery

All products are manufactured under strict quality control and shipped with export-ready packaging.
Ongoing technical support is available after delivery.

Our Manufacturing Strength

With over 21 years of experience, our production facility covers more than 27000 m² and is equipped with advanced filter media and bag-making equipment to ensure consistent quality and high efficiency.

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Years of Experience

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㎡ – Modern Production Base

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Customers Worldwide

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Exporting Country