Calender assembly including an additional roll displaced into the path of the web of material
AssigneeSulzer-Escher Wyss GmbH
InventorHarald Hess
Life of this patent
Estimating the term…
Abstract
In a calender assembly for treating a web of material (1) in a nip (4) formed by a pair of press rolls (2, 3), at least one roll (3) is heated. In front of and/or behind the nip (4) there is at least one additional roll (8, 9, 14) which can be displaced into the path of the web of material (1) in such a way that the angle of wrap of the web of material (1) at the heated press roll (3) increases. In this way, easy and quick introduction of the web of material is made possible. Further, the heat losses of the heated roll are reduced.
Claims7
Calender assembly for treating a web of material in a nip formed by a pair of press rolls, at least one roll being heated, comprising upstream of the nip, in the direction of travel of the web of material, at least one additional roll which can be displaced into the path of the web of material in such a way that the angle of wrap of the web of material on the heated press roll increases, said at least one additional roll be pressed against the heated press roll by a device with a force that is substantially less than a force applied in the nip by the pair of press rolls.
Dependencies are inferred from the claim text.