A method in the case of the heating of a jacket work surface on a rotating roll and rotatable roller for heating a web material

摘要

A method for heating a jacket - working surface (1) on a rotating roll, in which a heat transfer medium in adjacent channels (20) under the jacket - working surface (1) to the - and is brought to flow back, characterized in that the heat transfer medium in the inlet header (11) is divided in two partial streams, wherein the first partial flow in the heat conducting contact with the jacket - working surface from the inlet header (11) on the first end of the roll to the second end of the roll and from there, without a heat conducting contact with the jacket - working surface (1) to the outlet header (12) on the first end of the roll and that the second partial stream flows without heat conducting contact with the jacket - working surface from the inlet header (11) on the first end of the roll to the second end of the roll and from there, in the heat conducting contact with the jacket - working surface (1) to the outlet header (12) on the first end of the drum flows.