Belt assembly and paper- or board making machine comprising the belt assembly

摘要

A belt assembly for moving a web from a press section (1) of a paper- or board-making machine to a dryer section (3) of the machine, comprises a combination of a first press roll (11) adapted to be arranged at the press section (1), and a stretcher/guiding roll (51) which is arranged between the press section (1) and the dryer section (3). A heat conductive metal belt (5) that forms an endless loop and that is impervious to fluids goes over the first press roll (11) and the stretcher/guiding roll (51), so as to take over a web at the press section (1) and to move the web to the dryer section (3). A guide roll proportional position control is adapted to control the position of the metal belt (5) between the edges of the stretcher/guiding roll (51).