| 摘要 |
A support body (7) for an apparatus having an extended nip (N), being define d by a contact surface (13) of the support body and an opposed surface (4), th e support body being elastically deformable and has its contact surface adaptable to the opposed surface in interaction with this, and comprising a pressure chamber (14; 56; 60) or several pressure chambers (40; 43; 62), sai d pressure chamber or each pressure chamber, respectively, is arranged to be pressurized for loading the nip via said contact surface. According to the invention the support body is provided with a holding device (8) which forms a counter support for the pressure chamber or pressure chambers except at the side facing said contact surface. The invention also relates to a holding device for such a support body and also an apparatus, e.g. a press, for the treatment of a fibre web, said apparatus having such a support body. The invention also relates to a method of forming the extended nip in said apparatus by applying a pressure in at least one pressure chamber of the support body and expanding elastically deformable side portions of the suppo rt body, and also to a method of controlling the load in the extended nip by designing the support body with several pressure chambers and setting the pressures in the pressure chambers in accordance with a predetermined patter n.
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