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Optimizing continuous digester performance (webinar)

Many continuous digesters are operating over design, making the system too sensitive to process disturbances. A Valmet webinar reviewed issues and solutions.

Troubleshooting chronic wrinkling on a size press, case study

Valmet investigated an issue where a size press was having wrinkling when the nip closed and before the applicator beam was loaded. The culprit was hydraulic.

Helpful tips for size pressing: properties, load, vibration…

Sheet properties when using size include - increased internal, surface, tensile strength, stiffness and roughness; decreased porosity, opacity and whiteness.

Guide to dryer section performance, key operating parameters

Here are some notes regarding key operation parameters of the dryer section, starting with the three zones related to effective drying rate.

OptiDry Coat energy savings at Hansol Daejeon, a case study

After rebuilding two board machines with OptiDry Coat technology, Hansol Daejeon is very happy with the energy savings. The successful results with PM 31 were repeated and exceeded with PM 32, with excellent cooperation.

Valmet Breast Roll Shaker 120 enhances board and paper properties

Valmet Breast Roll Shaker 120 improves formation properties such as: sheet strength, surface smoothness, printability and furnish absorption. Its simplified design has a small footprint and it's designed for easy maintenance.

Valmet tissue machine roll covers achieve significant benefits

Valmet’s new polyurethane cover materials extend running periods and reduce maintenance and energy costs on tissue machines.

Biomass combustion improves Trollhättan air quality, case study

The inhabitants of Trollhättan, Sweden, breathe much cleaner air than they used to years ago. Over 90% of the district heating in Trollhättan is generated by combusting biomass instead of fossil fuels.

Refiners are running at double design capacity, case study

Valmet's latest refiner turbine segment patterns reduces energy consumption while lengthening segment lifetime.

Valmet seal flow upgrade improves suction roll operation

One way for mill's to reduce costs is to replace old, outdated showers and nozzles with Valmet Suction Roll Upgrade Seal Flow shower technology. It will improve moisture profiles, reduce water consumption and reduce roll maintenance costs.