CTMP pulping

With Valmet’s CTMP* process you can produce the perfect pulp for cartonboard and other applications. We help you produce pulp with desired quality at a high wood yield, so you can combine high profitability with good sustainability.

Valmet’s CTMP process provides excellent bulk properties of paper at a high production capacity. In our CTMP process, wood chips are first impregnated with sulfite and/or sodium hydroxide and preheated at 90 to 150 °C to help soften the lignin between the fibers. The chips are then refined mechanically in the pressurized refiner to produce high-quality pulp according to your requirements.

*Chemi-ThermoMechanical Pulp

Chip washing

Producing quality pulp requires chips that are free from sand and other impurities. At Valmet, we provide optimal chip washing efficiency for our customers’ various processes.

Chip treatment

The chip pretreatment stage is a key process in all mechanical pulping processes. Valmet is the market leader, offering the best solutions in terms of pulp quality, flexibility, availability and cost per ton.

Refining

At Valmet, we offer refiners that can meet every customers’ unique needs. Our equipment include high consistency refiners and low consistency refiners.

Steam separation

Valmet’s technology for steam separation in mechanical pulp production provides significant environmental and energy benefits.

Washing

At Valmet, we offer washing solutions for all types of mechanical pulps. By choosing our solutions you invest in proven process know-how and long-term support.

Bleaching

In mechanical pulping, Valmet has extensive experience of peroxide bleaching processes for all pulps.

Screening and cleaning

Valmet provides you with a process that gives you a clean pulp free from shives, bark and foreign particles.

Our expertise is at your service

Our focus is to bring your performance forward. Get in touch with us through our website, or through your local Valmet office.