Filter bags made of PP needle felt (polypropylene) can have several special finishes.

In some market segments these rare characteristics are required:

  • Asymmetry - the fiber support is not located centrally, but on the side. In this rare case, the dust side of the bag is on the non-smoothed side of the surface. This finish has an influence on the filtration efficiency.
  • PTFE membrane – it can also be used with polypropylene needle felts. In order to achieve a very high filtration efficiency, the microporous membrane is the right solution.
  • Spark blocking - thanks to special manufacturing technology such  material can be used in applications where sparks can occur.

Applicable in the following industrial sectors:

  • electroplating plants
  • steel production
  • fertilizers production