Patent ID: 6517683
Filing Date: 2003-02-11
Classification: D21F

Abstract:
Press in a machine for the production or treatment of a continuously running web of cellulosic fibrous material, which press comprises a press device and a counter element arranged opposite the press device so as to form a press zone in the form of an extended press nip in cooperation with the press device having a certain width in the machine direction for pressing of the fibrous web as it runs through the press nip, which press device comprises:a press shoe; a support element for supporting and pressing the press shoe in a direction towards the counter element via at least one power device arranged between the press shoe and the support element for application of pressure onto the fibrous web during a pressing operation; a flexible belt that is arranged to run in a continuous loop around the support element and through the press nip, having a sliding contact with the press shoe; and a first guide for the press shoe arranged downstream of the press shoe, which first guide is movable between at least a first position and a second position displaced from said first position in the machine direction; wherein the press device further comprises a second guide for the press shoe arranged substantially upstream of the press shoe and substantially in the machine direction and which second guide is movable between at least a first position and a second position displaced from said first position in the machine direction, adjustment of the first and second guides from the first positions to the second positions thereof allowing the press shoe to be adjusted in position in the machine direction so as to alter a machine-direction profile of the pressure applied to the web.