Press device having an extended press nip for pressing of a...

Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...

Reexamination Certificate

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C162S358300, C100S153000

Reexamination Certificate

active

09734310

ABSTRACT:
A press device with an extended press nip for pressing of a continuous paper or paperboard web comprises a press shoe, a backing member, a support, and a plurality of loading cylinders with main axes in their longitudinal directions. The press shoe can be moved between different positions. A stop member is arranged downstream of the press shoe for transfer between and fixation at different stop positions in the machine direction. At least some of the loading cylinders or the support comprise members eccentrically arranged with respect to one or some of the main axes, which members can be brought into different eccentric positions with respect to the main axes. The eccentric position and the stop position controls the position of the press shoe during the pressing, and thereby the pressure curve.

REFERENCES:
patent: 4705602 (1987-11-01), Dahl
patent: 4713147 (1987-12-01), Saarinen
patent: 4917768 (1990-04-01), Ilmarinen
patent: 4973384 (1990-11-01), Crouse et al.
patent: 5650047 (1997-07-01), Meschenmoser
patent: 5676799 (1997-10-01), Meschenmoser et al.
patent: 5753084 (1998-05-01), Bubik et al.
patent: 5925219 (1999-07-01), Schiel
patent: 5997696 (1999-12-01), Gustavsson et al.
patent: 6030502 (2000-02-01), Meschenmoser
patent: 6042694 (2000-03-01), Brox
patent: 6083352 (2000-07-01), Snellman et al.
PCT International-Type Search Report, Swedish National Application No. 9904544-5, completed on Aug. 23, 2000.

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