METHOD FOR PRE-CALENDERING A BOARD WEB
The invention relates to a method for pre-calendering a board web. The method comprises passing a board web (W) in a pre-calendering process through at least one hard nip (2), which is formed by a metal roll (4) and its counter roll (5), and through at least one long nip (1), which is formed by a thermo roll (6) and a long-nip roll (7) or a long-nip belt assembly. The method comprises moistening the surface of the board web (W) with water prior to passing the same through said at least one hard nip (2).