Luft Filter Products

Fiberglass and PTFE Membrane Filter Bags

PTFE Membrane Filter Bags: High Performance, Long Life, Low Emissions

Filter bags used in industrial dust collection systems do more than just capture particles; they play a critical role in energy efficiency, uninterrupted system operation, and compliance with environmental regulations.

At Luft Filter, we provide long-lasting, low-maintenance, and high-efficiency solutions with PTFE membrane fiberglass and PTFE membrane needle felt filter bags, carefully selected and optimized to meet the diverse needs of different processes.

Fiberglass + PTFE Membrane Filter Bags

In processes involving high temperatures and moderate chemical exposure, fiberglass fabric provides an ideal solution with its thermal stability and mechanical strength.
The microporous ePTFE membrane laminated onto its surface significantly enhances the fabric’s filtration efficiency and cleanability.

🛡️ Make a Difference with Luft Filter Quality

At Luft Filter, we take an active role in all technical processes — from selecting fiberglass + PTFE membrane bags to performance validation — determining the most suitable fabric type, stitch design, and dimensions through project-specific analyses.

In the integrated production processes we carry out with our partners, every filter bag undergoes rigorous quality control steps before and after manufacturing:

• The ePTFE membrane lamination process is carried out in compliance with established quality standards.

• Stitching and welding techniques are optimized to prevent deformation under high temperatures.

• Each bag is tested and verified for air permeability and seam strength.

• Project-specific material certificates, technical drawings, and application recommendations are provided with delivery.

We Can Select the Right Solution for Your Process Together

Every process has unique requirements. The Luft Filter engineering team analyzes your system data to provide the most suitable solution based on maximum efficiency and minimum maintenance.

📞 Contact us to choose the right filter bag solution for your facility together.

The PTFE membrane is laminated onto the surface of the fiberglass, creating a surface filtration medium. This provides several advantages:

• Dust remains on the surface rather than penetrating the fabric, making cleaning cycles easier and more efficient.

• The filter bag’s clogging time is extended, keeping the differential pressure low.

• The bag’s service life is significantly increased.

• Emission levels are reduced, facilitating compliance with environmental regulations.

Maximum performance and long service life for high-temperature processes

✅ Advantages:

• Surface dust retention → low differential pressure

• Reduced clogging, longer bag life

• Less frequent cleaning → energy savings

• Emission levels comply with environmental regulations

PTFE Membrane Needle Felt Filter Bags

ePTFE membranes applied to synthetic polymer needle felts such as polyester, acrylic, and PTFE capture ultra-fine dust particles on the surface, providing high-precision filtration.

They are ideal for operations seeking process stability and low dust emissions.

✅ Advantages:

• Filter bag life can be extended up to 2–3 times

• Suitable for achieving the lowest emission targets

• High cleaning efficiency → reduced energy consumption

• Maximum resistance to chemicals, moisture, and temperature

• Suitable for food and pharmaceutical applications (food-grade approved options)