Manufacturing of mechanical pulp (mekaanisen massan valmistus)

Mechanical pulp is an intermediate product made of wood, and is most commonly used as raw material for paper. Mechanical, or groundwood pulp is manufactured mechanically, which means that the wood is ground so as to separate the fibres from each other. The yield of mechanical pulp production is high, about 90 percent. On the other hand, the making of mechanical pulp requires a great deal of energy, which means that these mills have to buy energy from external sources.