PI – Polyimide, P.84® – Basic version

PI needle felt (Polyimide, P.84®) is used in industrial dry filtration where the temperatures significantly exceed 200 °C.

Applicable in the following industrial sectors:

  • kettle industry
  • energy industry
  • desulfurization plants
  • garbate and waste management industry
  • brick firing kilns

PROPERTIES OF A PI (POLYIMIDE, P.84®) NEEDLE FELT FILTER BAG:

Versions and Finishes:

  • oil and water repellent PTFE-based
  • with PTFE membran
  • with microfibers
  • spark-blocking

Weight:

  •  500 – 550 g/m2

Surface:

  • heat-set
  • calandered

Thermal resistance:

  • Continuous:
 230 °C
  • Peaks:
 260 °C

Chemical resistance:

  • Weak acids:
 ↄ ↄ ↄ
  • Strong acids:
 ↄ ↄ
  • Solvents:
 ↄ ↄ
  • Weak alkalis:
 ↄ ↄ ↄ
  • Strong alkalis:
 ↄ ↄ
  • Hydrolysis:
 ↄ ↄ
  • Oxidizing:
 ↄ ↄ ↄ
Resistance scale: ↄ ↄ ↄ ↄ – excellent, ↄ ↄ ↄ – good, ↄ ↄ – fair, ↄ – poor