Press felts for board and paper machines
The role of press felts is to prevent marking from roll grooves and holes, even out the pressure changes in the nip, ensure uniform pressure distribution and excellent dewatering, absorb vibration in the press, give smooth surface for the web and transfer the web through the press section.
Press felts, like forming fabrics, play an important role in the end quality of the produced board and paper.
Valmet’s press felts provide:
- excellent machine runnability,
- high sheet dry content after press section,
- fast start-up,
- and are marking-free.
They also contribute remarkably to improved paper properties.
Valmet press felt offering:
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Valmet Press Felt TMO and Valmet Press Felt SMO
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- safe and easy installation
- non-marking seam
- good resistance against compaction and filling
- good water handling capacity
- fast start-up
- stable run
- good dewatering
- long and reliable service life
- less runnability problems
- good sheet quality
- high smoothness
- no base weave marking
- fast start-up
- incompressible structure
- good paper profiles
- high smoothness
- no base weave marking
- excellent water handling capacity
- excellent compaction resistance
- uniform pressure distribution and thus good paper profiles
- stable run
- good dewatering
- planned service life
- flexible structure
- versatile designs - easily adjustable for a variety of positions
- fast start-up
- strong continuous nip-dewatering
- very good dimensional stability
- easy installation
CUSTOMER SUCCESS STORIES AND TECHNICAL ARTICLES
Making the right choices to boost wet pressing efficiency
Wet pressing has an impact all the way from paper machine drying capacity and web runnability to end product properties. The secret of process efficiency often lies in making the right choices for the press section consumables.
It’s a shared journey
Stora Enso and Valmet have a long history of working for better results at the Veitsiluoto Mill. The cooperation has brought benefits ranging from economies of scale to joint innovation, and helped the mill to improve their production capabilities over time.
Improving press performance step by step
After a fourphase improvement project, Thai Cane Paper enjoys lower steam consumption, better runnability, higher paper dryness, longer felt lifetimes, and vacuum energy savings in its PM 2 press section.
Stable performance with Valmet Press Felts
Press felts are key in successfully removing water in the papermaking process. Overall, they play a very important role in the machine’s performance, especially in terms of runnability. In press felts, small things make the difference. Valmet’s press felts are known by their profiling and special treatments.
A rolling stone gathers no moss
In addition to offering high-quality paper machine clothing, Valmet’s target is to walk along the customer all through their production process. This has been noticed at Schoellershammer PM 5 as well.
Start-up with Valmet paper machine clothing
Valmet supplied paper machine rebuild for Stora Enso's PM3 in Varkaus started up successfully. The mill feels that a single point of responsibility is beneficial, as there are fewer players and thus fewer overlaps in the start-ups.
Valmet Press Felt SPM for demanding conditions
Valmet’s SprintMaster press felt is designed for demanding paper and board machine conditions. It provides great savings potential with improvements in runnability, dry content, start-up, lifetime and energy consumption.
Save costs by optimizing water removal
Water removal at the forming or press section is significantly cheaper than at the dryer section. Since removing one liter of water from the sheet at the dryer section costs five times more than at the press section, it pays to optimize dewatering at an early stage.
