Method and device for shortening the flap of paper following a roll change

Abstract

During an unsupported roll change, a flap of paper resulting at the joining point can lead to disruptions in a processing station situated down-stream. According to the invention, the paper web (1) is advanced on a carrying element that is moved faster than the paper web (1), for example, on a suction roll (5). Said carrying element is arranged so close to the continuous paper web (1) that it catches the flap (8) of paper, which is located on the paper web (1), with frictional engagement. The flap (8) of paper is advanced with its rear side on the paper web (1) in a sliding manner and in relation to said paper web (1) in order to cause the leading part of the flap (8) of paper to arch in a wavelike manner. The arched flap (8) of paper strikes a blade (6) and is cut away until it can no longer cause any disruptions.

Dependencies are inferred from the claim text.