Meta-Aramid Filter Cartridges

Engineered for High-Temperature Industrial Dust Collection

KABORY Meta-Aramid Filter Cartridges are engineered for industrial dust-collection systems operating under continuous high-temperature conditions.

Unlike standard polyester cartridges, meta-aramid filter cartridges can maintain thermal and dimensional stability at elevated temperatures. However, producing a reliable pleated cartridge requires more than simply replacing polyester or PPS media with meta-aramid.

Because meta-aramid felt is flexible, the pleat structure, bottom connection and end-cap assembly must be specifically engineered to withstand repeated pulse-jet cleaning and long-term industrial operation.

KABORY combines stabilized meta-aramid pleated media with a specialized locked-bottom structure to maintain pleat geometry, prevent media pull-out and improve long-term structural reliability.

Why Meta-Aramid Filter Cartridges Require Specialized Engineering

Meta-aramid fibers provide excellent heat resistance, mechanical strength and flexibility. These properties make the material suitable for high-temperature dust filtration, but they also create challenges when forming a pleated filter cartridge.

Without proper structural control, a meta-aramid cartridge may experience:

• Progressive pleat movement during pulse-jet cleaning
• Pleat-to-pleat contact and uneven dust loading
• Stress concentration at the bottom interface
• Filter media separation from the end cap
• Loss of sealing integrity during long-term operation

These risks cannot be solved through filter media selection alone. Reliable performance depends on the complete cartridge structure, including pleat geometry, media stiffness, bottom connection, end-cap bonding and manufacturing consistency.

Specialized Locked-Bottom Structure

The bottom interface is one of the most highly stressed areas of a pleated filter cartridge.

Repeated pulse-jet cleaning generates reverse airflow shocks that act directly on the pleated media. At elevated temperatures, continuous thermal expansion and contraction place additional stress on the connection between the media and the bottom end cap.

To address this challenge, KABORY uses a specialized locked-bottom structure that mechanically secures the pleated meta-aramid media to the bottom assembly.

This structure helps to:

• Prevent filter media pull-out
• Maintain stable pleat positioning
• Distribute pulse-jet stress more evenly
• Reduce movement at the bottom interface
• Maintain sealing integrity during thermal cycling
• Improve long-term cartridge stability

The locked-bottom design provides mechanical reinforcement beyond a conventional glued or press-fit connection, making it particularly important for flexible high-temperature pleated media.

Stable Pleat Geometry

Stable pleat geometry is essential for maintaining effective filtration area, uniform airflow and reliable dust release.

KABORY controls the complete pleating process, including:

• Pleat height
• Pleat spacing
• Media stiffness
• Cartridge diameter
• Pleat distribution
• End-cap alignment

Controlled pleat formation helps prevent pleat collapse, excessive contact and uneven airflow during operation.

The meta-aramid media undergoes a specialized stiffening and heat-setting process before cartridge assembly. This provides the rigidity required for consistent pleating while retaining the thermal performance of the meta-aramid fiber.

Designed for Pulse-Jet Cleaning

Industrial cartridge filters are repeatedly exposed to reverse-air shocks during pulse-jet cleaning.

If the pleated structure is not properly stabilized, repeated cleaning can gradually deform the pleats or separate the media from the bottom connection.

KABORY Meta-Aramid Filter Cartridges are designed to maintain structural stability under properly controlled pulse-jet cleaning through:

• Stabilized pleated filter media
• Controlled pleat spacing
• Reinforced locked-bottom construction
• Secure end-cap assembly
• Consistent dimensional control

Actual cartridge life also depends on pulse pressure, cleaning frequency, filtration velocity, dust characteristics and system operating conditions.

High-Temperature Performance

Meta-aramid filter media is commonly selected when the operating temperature exceeds the practical range of standard polyester cartridge media.

Typical temperature capability:

Parameter	Typical Value
Continuous Operating Temperature	Up to approximately 200°C
Short-Term Peak Temperature	Up to approximately 220°C
Filter Media	Stabilized meta-aramid pleated felt
Cleaning Method	Pulse-jet or application-specific cleaning
Cartridge Dimensions	Customized according to drawings or samples

Temperature limits depend on the complete cartridge construction, including the filter media, end caps, adhesive, gasket and internal support components.

For humid, strongly acidic, strongly alkaline or hydrolysis-sensitive operating conditions, the complete gas composition should be reviewed before selecting meta-aramid.

Meta-Aramid vs. PPS Filter Cartridges

Meta-aramid and PPS filter cartridges are designed for different operating conditions.

Selection Factor	Meta-Aramid Filter Cartridge	PPS Filter Cartridge
Primary Advantage	Higher temperature capability	Chemical and hydrolysis resistance
Continuous Temperature	Up to approximately 200°C	Typically up to approximately 170–190°C, depending on construction
Moisture Resistance	Application-dependent	Generally better
Acid Resistance	Limited to moderate, depending on conditions	Generally better
Pleat Structure	Requires controlled stiffening and reinforcement	Depends on media construction and treatment
Typical Selection	Relatively dry, high-temperature dust	Chemically aggressive or moisture-containing flue gas

Meta-aramid should not be treated as a universal replacement for PPS.

The correct material should be selected according to operating temperature, moisture, oxygen content, chemical composition, dust characteristics and cleaning conditions.

Technical and Customization Options

KABORY can manufacture Meta-Aramid Filter Cartridges according to customer drawings, existing samples or dust-collector specifications.

Parameter	Available Option
Outer Diameter	Customized
Inner Diameter	Customized
Cartridge Length	Customized
Pleat Height	Application-specific
Pleat Quantity	Application-specific
Filtration Area	Calculated according to cartridge dimensions
End-Cap Material	Selected according to temperature and installation
Internal Support	Customized metal support structure
Gasket Material	Selected according to temperature and sealing requirements
Installation Type	Customized
Bottom Structure	Specialized locked-bottom design
Surface Treatment	Antistatic or application-specific options
Supply Form	Finished filter cartridges

Customers may provide an existing cartridge sample, technical drawing or equipment model for dimensional confirmation.

Antistatic Treatment

Carbon impregnation or other antistatic treatment can be applied when required for dry dust-collection conditions where electrostatic charge accumulation must be controlled.

Antistatic performance should be evaluated as part of the complete cartridge construction. If a specific electrical-resistance standard or third-party certification is required, this must be confirmed before production.

Antistatic treatment alone does not make a cartridge suitable for every combustible or explosive dust application. The complete dust-collection system must be evaluated according to the relevant safety requirements.

Typical Applications

KABORY Meta-Aramid Filter Cartridges can be considered for:

• High-temperature industrial dust collectors
• Cement and mineral-processing systems
• Steel and metallurgical dust collection
• Foundry and thermal-processing applications
• High-temperature powder handling
• Industrial processes using pulse-jet cartridge collectors
• Systems where polyester cartridges cannot withstand the operating temperature

Final suitability depends on the actual process conditions.

Proven Large-Scale Manufacturing Capability

Producing a small number of prototype meta-aramid cartridges is different from maintaining stable industrial-scale production.

Consistent batch production requires control of:

• Filter media stiffness
• Pleat geometry and spacing
• Cartridge dimensions
• Locked-bottom accuracy
• End-cap alignment
• Sealing quality
• Batch-to-batch consistency

KABORY has developed a repeatable manufacturing process for Meta-Aramid Filter Cartridges, supporting both project orders and continuous industrial supply.

Our focus is not limited to laboratory samples or short trial batches. The production process is designed to deliver consistent cartridge structure and reliable quality across larger order quantities.

Quality Control

Each production batch can be inspected for:

• Cartridge dimensions
• Pleat height and spacing
• End-cap alignment
• Bottom-locking integrity
• Media surface condition
• Sealing and assembly quality
• Fit with the specified installation interface

Additional inspection requirements can be agreed according to the customer’s drawings and project specifications.

Information Required for Quotation

To recommend and quote the correct Meta-Aramid Filter Cartridge, please provide:

• Cartridge drawing or existing sample
• Outer and inner diameter
• Cartridge length
• Installation and end-cap design
• Normal operating temperature
• Maximum temperature and duration
• Gas composition and moisture content
• Dust type and concentration
• Pulse pressure and cleaning frequency
• Required antistatic performance
• Required quantity

FAQ

Why is a locked-bottom structure important?

Repeated pulse-jet cleaning places mechanical stress on the connection between the pleated media and the bottom end cap. The locked-bottom structure mechanically secures the media and helps prevent pull-out during long-term operation.

Can Meta-Aramid Filter Cartridges replace polyester cartridges?

They can be considered when the operating temperature exceeds the practical limit of polyester. Cartridge dimensions, filter area, airflow and installation design must still be checked before replacement.

Can they directly replace PPS filter cartridges?

Not always. Meta-aramid generally offers higher temperature capability, while PPS usually provides better resistance to moisture and many acidic gases. Selection must be based on the actual operating conditions.

Can the cartridge dimensions be customized?

Yes. KABORY can manufacture according to customer drawings, existing samples or dust-collector specifications.

Are antistatic versions available?

Yes. Antistatic treatment is available upon request. Required electrical-resistance values and certification requirements should be confirmed before production.

Contact KABORY

KABORY Meta-Aramid Filter Cartridges combine stabilized pleated media, controlled pleat geometry and a specialized locked-bottom structure for reliable high-temperature industrial dust collection.

Please send us your cartridge drawing, sample dimensions and operating conditions for technical evaluation and quotation.