Roll types for tissue machines

Tissue machine rolls

Latest roll technology innovations for optimal roll performance

Suction rolls

Suction rolls provide high performance on all types of machines from low-speed machines to the latest board and paper machines designed for operating speeds in excess of 2,000 m/min (6,560 ft/min). Aside from rolls for Valmet machinery, we can also offer appropriate spare rolls for a number of other makes. Many of our latest roll technology innovations can be adapted into spare rolls that are compatible with existing rolls. This is an easy and cost-effective way to improve suction roll performance.

Spare suction roll shells

Suction roll shells are made of the highest quality Duplex stainless steel shell blanks manufactures through a plate hot rolling or centrifugal casting process. Precision drilling ensures extremely accurate hole positioning and superior hole surface smoothness.

     Services for suction rolls include:

 

Valmet roll types

Deflection-compensated rolls

Deflection-compensated rolls provide reliable and stable operation. These rolls are the key elements for efficient pressing and calendering.

  • Swimming type Valmet Sym Nip Rolls 
  • Zone-controlled Valmet SymZ/SymZS Nip Rolls 
  • Valmet SymZL/SymZLC Shoe Press Rolls 
  • Valmet SymBelt Shoe Press Rolls
  • Spare Valmet CC rolls

     Services for deflection-compensated rolls include:

 

Cast iron rolls

Cast iron rolls offer a reliable, well-performing and durable roll option for all paper and board machines. Our product range includes: cast iron press rollsdryer cylinders, chilled cast iron thermo rolls, reel drums, winder and belt drums.

     Production consumables for cast iron rolls include:

 

Steel dryer cylinders

Valmet steel cylinders bring considerable benefits compared to traditional casted dryer cylinders. Steel cylinders have thinner shells and a 10 percent better heat conductivity compared to cast iron cylinders. These properties enable efficient heat transfer during the drying process and the drying capacity is higher with the same steam pressure than with cast iron cylinders

Valmet steel cylinder.png

 

High-precision tube rolls

Well-performing tube rolls are essential for paper machine runnability. High reliability and easy repairability in the case of accidents are also important requirements for these rolls. Valmet’s high-precision tube rolls with optional quick change heads were developed to meet these specific demands.

  • Lead rolls (steel)
  • Reel spools
  • Lightweight lead rolls based on advanced composites

 

Read more about Spreader rolls

 

Customer success stories and technical articles

New breast roll shell boosts performance at Mänttä

New breast roll shell boosts performance at Mänttä

Metsä Tissue's Mänttä mill intends to utilize Valmet’s grooved, countersunk breast suction roll shell to reduce unplanned roll changes and extend roll running times.

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