The mechanical production of pulp can be divided into two categories: groundwood pulp production and the thermo-mechanical process (TMP), the latter in some cases with chemical support (CTMP).In groundwood pulp production, the logs of wood are pressed on grinding stones by means of mechanical presses. The wood is split into fibers with the help of water. As a result of which the wood fibers are released but still contain a large variety of contaminants. Groundwood pulp has a high yield of approximately 95% and has a high level of opacity but its strength is relatively low, due to its lignin content.

In the TMP process, the wood is processed into chips which are mostly of a uniform size. These are then transported to an impregnating station, where the chips are saturated with chemicals and heated. After this stage they are passed in refiner stations and then screened and bleached. The finished stock still contains some lignin which comes from the cell walls and makes the paper yellow.

SIPAPER Drives are solutions which enable grinders, refiners and pumps to be operated at optimum power consumption levels. The special features of the SIPAPER treatment solutions are used to comply with the environmental regulations regarding the water used in the processes whereas SIPAPER Power solutions transform, distribute and monitor electric power.