Web treatment device for manufacturing paper or cardboard, comprises temperable roller, on which web is guided by one of belt guide rollers, where belt is provided, which has belt running path

摘要

The web treatment device (1) comprises a temperable roller (2), on which a web (5) is guided by one of the belt guide rollers (9-1,9-2,9-3). A belt (6) is provided, which has a belt running path that is prior to or behind the contact area on the temperable roller, in which the web is in contact with the belt. The belt has through openings at the lateral edge. A negative pressure generating unit (13,14) is provided in the inner area of the closed belt.