Valmet’s Metal Belt calender project aimed to reduce stiffness loss in paper after calendering. At the start, the inventor studied the physics of the calendering process. They realized that the duration of heat treatment was a key parameter. In existing calenders, heat treatment lasted only a few milliseconds. Some niche solutions enabled longer heat treatment, but only at slow production speeds. Thus, the project turned its focus on improving heat conduction without slowing the production speed.
- What are the key parameters and relationships in your product?
Read more about the case: Valmet OptiCalender Metal Belt (LINK MISSING)