Dec. 4, 2017 – Valmet says it has revolutionized water drainage in the wire section of a paper machine with its polarized forming fabrics.
“Our polarized forming fabrics have been piloted in paper-machines for over a year now. After the polarized technology entered the market in 2016, we have seen its advantages through our customers’ performance. The machines run cleaner, number of breaks is reduced, retention is higher, just to mention a few. The unique polarized structure makes a big difference in the fabric performance compared to what we have seen before,” says Pekka Kortelainen, product technology manager at Valmet.
Traditionally, all SSB (sheet support binding) fabrics have had direct drainage channels. In the polarized structure, the machine direction yarns on both the paper side and the roll side are shifted to form an off-stacked structure. This special structure removes the direct drainage channels traditionally used in forming fabrics, explains the company.
“The unique polarized structure allows controlled initial drainage in the paper-making process. That improves retention and helps keeping the machine clean. Good runnability and cleanliness reduce breaks and therefore increase production capacity remarkably. Cost-savings are created by for example being able to use less chemicals,” continued Kortelainen.
The polarized structure can be utilized in all SSB forming fabric types, which makes it suitable for all paper machines.
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