Simple press section in a paper or board machine

Details Simple press section in a paper or board machine Simple press section in a paper or board machine

2005-08-09

2005-08-09

Hug, Eric (Department: 1731)

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

C162S358100, C162S358300

Reexamination Certificate

active

06926806

ABSTRACT:
A web (W) passes through a press section having two separate press nips (N1, N2). At least the first press nip (N1) has two water-receiving 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.

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Search Report issued in Finnish Priority Application No. 20000404.
International Search Report Issued in PCT/FI01/00094.
International Preliminary Examination Report issued in PCT/FI01/00094.

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