TENSION

The required tension for press felts is clearly lower than for forming fabrics, but that doesn’t make it less important.

  • a wrinkled felt going through the nip is instantly destroyed
  • tension affects the dewatering behavior of press felts
  • some run a felt skewed through the nip (“cocking”) to reduce vibrations
  • unstable dimensions – for example the felt becoming too narrow
  • bearing and roll failure due to unexpectedly high tension

 

  • problems due to piping or waviness of the felt
  • over-tensioned seamed felts give hydraulic or mechanical seam marking

Feltest products for felt tension measurement:

Tensio+

Related whitepapers:

Poorly maintained tension gauges may cause severe damages