Non Woven Filter Cloth for Industrial Dust Collection

Request a Custom Quote

Aokai manufactures non woven filter cloth for industrial baghouses and dust collection systems. Our range includes polyester, acrylic, aramid, PPS, P84, PTFE, fiberglass and blended needle felt.

Available as filter media rolls or finished bags
Materials for standard, corrosive and high-temperature conditions
Custom weight, thickness, air permeability and surface finish

What Is Non Woven Filter Cloth?

Non woven filter cloth is made from fibers that are mechanically entangled rather than woven into a regular warp-and-weft pattern. In industrial dust collection, the most widely used construction is needle-punched felt.

A typical needle felt contains a supporting scrim between two layers of fiber. Thousands of barbed needles repeatedly pass through the fiber web, pulling the fibers together and locking them around the scrim. The result is a stable, three-dimensional filtration structure with controlled weight, strength and air permeability.

This structure gives the dust more than one path to follow. Particles may be captured within the fiber layer, retained by the dust cake or collected on a membrane surface.

Request a Filter Media Recommendation

Nonwoven Filter Cloth Materials

Nomex Needel Felt

Aramid Non Woven Filter Cloth

Aramid needle felt is designed for higher-temperature dust collection. It is commonly used in asphalt mixing plants, cement processes, metal production and other systems where polyester cannot tolerate the operating temperature.

Learn more: Aramid Filter Cloth

PTFE(Teflon) Non Woven Filter Cloth

PTFE needle felt is selected for severe chemical exposure and high operating temperatures. The fiber resists most acids and alkalis and does not absorb moisture in the same way as many conventional materials.

Learn more: PTFE Filter Cloth

PPS Non Woven Filter Cloth

PPS is widely used where heat, moisture and acidic gas occur together. It performs well in coal-fired boilers, power generation and selected chemical processes because it resists hydrolysis and many acids and alkalis.

Learn more: PPS Filter Cloth

Polymide (P84)Non Woven Filter Cloth

P84 is a polyimide filter material recognized for its irregular, multilobal fiber shape. This creates a large fiber surface area and supports effective fine-dust capture without relying entirely on a heavy dust cake.

Learn more: P84 Filter Clo

Acrylic Needle Felt Non Woven Filter Cloth

Acrylic needle felt is often considered when the gas is too wet or mildly acidic for conventional polyester but does not require a high-temperature material.

Learn more: Acrylic Filter Cloth

Polyester Non Woven Filter Cloth

Polyester is the standard choice for many dry dust collection systems operating at moderate temperatures. It offers useful mechanical strength, stable dimensions and good resistance to normal baghouse cleaning cycles without pushing material cost unnecessarily high.

Learn more: Polyester Filter Cloth

Typical Technical Specifications

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

Nonwoven Filter Cloth vs. Woven Filter Cloth

Selection Factor	Nonwoven Needle Felt	Woven Filter Cloth
Construction	Fibers mechanically entangled around a supporting scrim	Warp and weft yarns interlaced in a defined weave
Filtration structure	Three-dimensional fiber network	More regular yarn and pore structure
Fine-dust capture	Well suited to fine industrial dust	Depends strongly on weave, finish and dust cake
Permeability control	Adjusted through fiber, weight, needling and finishing	Adjusted through yarn type and weave
Mechanical behavior	Good balance of strength and flexibility	High dimensional stability in suitable constructions
Common cleaning systems	Widely used in pulse-jet baghouses	Often used in shaker and reverse-air systems
Typical materials	Polyester, acrylic, aramid, PPS, P84 and PTFE	Fiberglass and other woven yarn materials

Nonwoven Filter Cloth

Woven Filter Cloth

Applications of Non Woven Filter Fabric

Asphalt Mixing Plants

Aramid needle felt is commonly used because it tolerates the elevated temperatures found in asphalt production. Moisture, fuel quality and abnormal temperature peaks must still be reviewed before the material is finalized.

Steel and Metal Processing

Applications range from ambient-temperature workshop dust to high-temperature furnace gas. Dust abrasiveness, sparks and metal oxides can be as important as temperature when selecting the filter fabric and surface finish.

Waste Incineration

Waste incineration involves high temperature and complex gas chemistry. PTFE, P84, fiberglass and blended filter media may be used, often with a PTFE membrane where low emissions and effective dust release are required.

Battery Material and Carbon Black Processing

Very fine powder, high dust concentration and static risk require careful control of permeability, filtration velocity and conductivity. Anti-static needle felt or membrane-laminated media may be appropriate after the operating conditions are reviewed.

Coal-Fired and Biomass Boilers

Boiler gas may contain moisture, acidic compounds and fine ash. PPS, PTFE and blended media are commonly considered, depending on oxygen content, temperature and fuel composition.

How Needle Punched Filter Fabric Is Made

From Fiber to Filter: Full Control of Quality

We adopt high-performance fibers from world-renowned brands and conduct rigorous 13-item laboratory testing, including fiber composition, breaking strength, thermal shrinkage, and more.

Raw Material Selection

Raw fibers are precisely weighed and scattered by automatic equipment, then thoroughly opened and cross-blended in high-speed multi-chamber air mixing system. Fiber uniformity reaches over 98%, providing a stable foundation for high-quality needle felt production.

Mixing and Pretreatment

Equipped with German Autefa intelligent production lines, high-frequency high-speed needle punching machines, and imported Groz-Beckert needles, we achieve a high-speed web output of 100m/min through an 8-stage precision carding process.

Intelligent Spinning & Web Formation

Adopt multi-zone needle punching technology, combined with imported card clothing double cylinders. Precisely control punching depth and density to form a three-dimensional filtration structure.

Precision Needle Punching Molding

Stabilizes the fabric dimensions after processing, ensuring consistent fit, shrink resistance, and compatibility with bag cages.

Heat Setting

Singeing removes surface fuzz and loose fibers, preventing dust re-entrainment and improving cleaning efficiency. It creates a smooth surface ideal for pulse-jet cleaning systems.

Singeing Treatment

A PTFE or ePTFE microporous membrane is laminated onto the fabric surface to achieve ultra-fine filtration. It enables ≤5mg/m³ emission levels, reduces pressure drop, and significantly extends bag life.

Membrane Lamination

Chemical finishing forms a molecular film, repelling water/oil, retaining texture/breathability, wash & stain resistant.

water/oil repellency

Frequently Asked Questions

Non woven filter cloth is used as the filtration media in industrial dust collector bags. It captures airborne particulate from processes such as cement production, asphalt mixing, power generation, metal processing, chemical production, mining and waste incineration.

Needle felt is the most common type of nonwoven filter cloth used in industrial baghouses. It is produced by repeatedly punching fiber layers around a supporting scrim. Other nonwoven manufacturing methods exist, so the two terms are closely related but not universally identical.

Common materials include polyester, acrylic, aramid, PPS, P84, PTFE and fiberglass. Blended constructions are also available. The correct choice depends on temperature, moisture, chemical exposure, dust characteristics and cleaning method.

Woven cloth is made from interlaced warp and weft yarns. Nonwoven filter cloth uses a mechanically entangled fiber structure, usually supported by a scrim. Needle felt provides a three-dimensional filtration path and is widely used in pulse-jet dust collectors.

Yes. Needle punched filter fabric is widely used in pulse-jet systems because it combines filtration performance with the strength and flexibility required for repeated compressed-air cleaning. The fiber, scrim and weight must still suit the cleaning pressure and bag length.

Yes. A microporous PTFE membrane can be laminated onto compatible needle felt. It creates a surface filtration layer that can improve fine-particle collection and dust release. Membrane media must still be selected for the actual temperature, chemistry, abrasion and cleaning conditions.

Contact Us

All information will be kept confidential.