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Hydraulic safety - 5 tips for before, during & after maintenance

Hydraulic maintenance should be performed by knowledgeable, trained technicians. Here are some tips for safely and efficiently working on hydraulic systems.

Avoid winder vibration with modern software and hardware tools

Some paper grades generate winder vibration. Modern tools help, such as 4-way hydraulic valves, stiffer drums with lower dynamic runout and automated controls.

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.

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.

Avoid the wrinkles and web breaks that result from poor splicing

Splicing offers little reward for a job well done, but big penalties to the bottom line for poor quality workmanship such as when customers return shipments.

Avoiding roll defects at the winder - causes and solutions

Most roll structural defects are caused by poor nip or tension. These tips will help operators avoid starring, soft starts, corrugations and crepe wrinkles.

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.

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.

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.

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.