multi hv roll
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PrimeRoll – Solutions tailored to the papermaker´s needs

ANDRITZ PrimeRoll technologies, combined with PrimeCal calenders, are the key to success for state-of-the-art paper and board qualities.

The ANDRITZ PrimeRoll technologies are combined with all PrimeCal calenders to produce state-of-the-art paper and board qualities.

PrimeRoll edge trim

PrimeRoll edge trim

Hard- or soft-covered, deflection-controlled rolls form a uniform nip with the heated roll. The PrimeRoll MHV technology ensures exact CD caliper control over the full width, even at line loads of approximately 5 N/mm. Thus, no external profiling devices are needed.

Roll technology - product range

PrimeRoll S

AdvantagesFeatures

                  

  • Cost-efficient
  • Uniform nip pressure 
    over the full width
  • Easy maintenance 

                            

  • Pressure chamber and return oil chamber separated by longitudinal seals and end seals
  • Stationary roll shaft
  • Roll shell rotates on outer spherical roller bearings
  • Pneumatic/mechanical differential pressure regulator

PrimeRoll S EdgeControl

AdvantagesFeatures
  • Creates a uniform width profile by using 
    profiling elements at the edges
  • Easy maintenance
  • Stationary roll shaft
  • Roll shell rotates on outer spherical roller bearings
  • Pneumatic/mechanical differential pressure regulator

PrimeRoll MHV

AdvantagesFeatures
  • Substantial effect in positive and negative direction                    
  • Simple and advanced technology
  • Roll shapes are always geometrical
  • Safe operation
  • Statically pre-stressed by the ring chamber pressure
  • Easy maintenance
  • Each element is controlled individually for exact cross-direction (CD) caliper control
  • Ring chamber pressure allows positive and negative profiling
  • One-row design with sealing elements

Benefits from ANDRITZ advanced PrimeRoll technologies

  • Increased safety
  • Maximized production
  • Reduced overall lifecycle costs
  • Improved reliability and cost efficiency

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