PRESS LOAD

Press rolls in paper machines are crowned to achieve a uniform nip contact over the entire face of the roll under a given nip pressure. The amount of crowning depends on the roll body and cover, the deflection of the roll and the nip pressure range.

  • over time the roll cover will wear, changing the crowning profile
  • over time the elastic properties of the roll cover will change
  • producing at higher speeds usually means higher press loads and changed dynamic deflection of the rolls
  • a change in crowning of the engaging roll has a strong effect on the mating roll

Feltest products to check the press load of paper machines

Feltest Carbon Paper – an easy and affordable way to check the ‘footprint’ of 2 mating rolls

Fuji Pressure Sensitive Film – obtain detailed information on the length, width and pressure variations of the nip.

Advanced Analysis of Fuji Film – convert the information from the Fuji film into a clear, full width profile of the press.

LINKEDIN GROUP FOR PMC PROS

Join the Paper Machine Clothing Professionals group on LinkedIn. Anyone dealing with Paper Machine Clothing is invited to join this group. PMC Sales & Service Engineers, paper mill Production Managers, anyone with questions or knowledge on wires, fabrics, felts and canvas is welcome to join!

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REFERENCES

albany
andritz
asten johnson
cmpc
heimbach
international paper
kimberley clark
sca
smurfit kappa
storaenso
valmet
voith
xerium