SIMPLE PRESS SECTION IN A PAPER OR BOARD MACHINE

摘要

A press section comprises two separate press nips (N1, N2) through which a web (W) to be pressed is passed. At least the first press nip (N1) is a press nip provided with two water-receiving press felts (31, 41), through which press nip the web (W) runs between said press felts (31, 41). After the first nip (N1), the web (W) is separated from one press felt (31/41) and transferred on support of the opposite press felt (41/31) through the second press nip (N2). One roll of the first nip (N1) is a press suction roll (11, 110) and the web (W) is transferred to follow the press felt (31, 41) on the side of said press suction roll (11, 110) by means of an underpressure in a suction zone (11a, 110a) of said press suction roll (11, 110). The press felt (31, 41) on the side of the press suction roll (11, 110) is also passed through the second nip (N2) of the press section.