TREATMENT APPARATUS FOR TREATING A COATED OR UNCOATED FIBROUS WEB

摘要

The invention relates to a treatment apparatus (1) for treating a coated or uncoated fibrous web, comprising a belt (2) adapted to circle around guide elements (3), outside said belt being disposed at least one backing element (5) constituting a contact surface with the belt in such a way that the belt (2) and the backing element (5) establish therebetween a web treatment zone for passing the web to be treated therethrough. At least one section between two successive guide elements (3) in the belt running direction is provided with a belt tension roll (4) internal and/or external of the belt circle, which enables compensating for variation in a lateral and/or longitudinal tension profile of the belt.