PAPIERBAHN FORMENDES VERFAHREN UND VORRICHTUNG

The present invention relates to a method for forming fibrous paper or board web on a double wire section of a paper machine or equivalent the said double wire section comprising a first wire loop (10) and a second wire loop (20) in conjuction with it. In the first dewatering zone (12a) of the double wire section where the paths of the both wire loops (10, 20) are substantially linear, the web direction is adjustably deviated towards the second wire loop (20). In the second dewatering zone (12b) located after the first dewatering zone (12a), the web is curvedly directed towards the first wire loop (10) as a curved dewatering zone (12b). In the linear dewatering zone (12a), the second wire loop (20) is loaded towards the first wire loop (10) with wire support members (27, 28, 29), and in the curved dewatering zone (12b), the compression between the wires (10) is effected by adjustably tightening the wires. The present invention also relates to a web forming apparatus.