Maxtech Industries

Filter Bags

P84® (Polyimide) Felt

  • Polyimide felt (P84®) combines uniquely high abrasion resistance at elevated temperatures (240 deg C).
  • Multilobal P84® fibres create a low-velocity flow profile thereby increasing filtration efficiency and reducing pressure drop.
  • P84® provides better bag life in applications where Fiberglass is providing poor life due to abrasion-related failures. Fiberglass is highly fragile and over pulsing, excessive cleaning cycles, and high dust loads can lead to abrasion and membrane failures.
  • Maxtech is tied up with Testori (Italy) to provide 100% Evonik p84® Fibers.

Tensile StrengthAbrasion ResistanceAcid ResistanceAlkali ResistanceHydrolysis
Max Cont. Temperature


Cement: ESP-converted hybrid pulse jet filters at the raw mill.

Power: Blended P84 with PPS is often used in Boiler Application to increase filtration efficiency.



Tensile Strength


Abrasion Resistance


Acid Resistance


Alkali Resistance




Max Cont. Temperature