support body, support and fastening device for a support, apparatus and press for treating a fiber sheet, methods for forming an extended nip and for controlling the load on an extended nip and use of a support body

摘要

"SUPPORT BODY, SUPPORT DEVICE, AND FIXING FOR A SUPPORT, APPARATUS AND PRESS FOR TREATMENT OF A FIBER SHEET, METHODS FOR FORMING AN EXTENDED NIP AND CONTROLING THE LOAD ON AN EXTENDED NIP AND USING A SUPPORT BODY". Support body (7) for an apparatus with extended nip (N) defined by a contact surface (13) of the support body and an opposite surface (4), the support body having two opposite side surfaces (69, 70) and connecting to contact surface and a base surface (71) opposite the contact surface, the support body being arranged to be moved toward the opposite surface by means of a loading system to carry the nip through the contact surface. According to the present invention, the support body is elastically deformable and has its contact surface adaptable to the opposite surface in interaction with it. The present invention also relates to a support device for the support body and an apparatus, for example a press for treating a fiber web, said apparatus having such a support body. Furthermore, the present invention relates to a method for forming extended nip in said apparatus by carrying the support body with the loading system, as well as a method for controlling the load on the extended nip by projecting the support body with at least two layers of different elasticities. providing the corresponding load profile.