At the calender the paper gets the finishing touch, finalizing it’s quality. The required paper properties are diverse, depending on the paper quality. Paper can be glossy or matt, most often it needs to be smooth, bulk must be saved or the paper needs to be densified, and always the profile should be uniform. Therefor the calender equipment is diverse, from hard nip calender to soft and matt calender, to super and multi-nip calender, and to the belt calender. The paper can be hard and abrasive, or soft and of low strength, and the operating conditions range from low to high load, hot to cool, and low to high speed.