Method for improving the functioning of a drying section and a multi-cylinder dryer for performing the method

Abstract

Abstract Method for improving the functioning of a drying section, the method being performed in a multi-cylinder dryer in which there is a plurality of successive wire groups R1 ... R7, there being a drying wire 11 ... 17 in each of these and one or two rows of cylinders 20, 22. The cylinders in at least one row are heated drying cylinders 20, against the surface of which the web W comes into direct contact under the tensioning pressure of the drying wire 10 ... 17. The tension T1 ... T7 of the drying wires of the various successive wire groups R1 ... R7 in the multi-cylinder dryer is used as an active process parameter that improves the drying process. To this end, the tensions T1 ... T7 of the drying wires in the various wire groups R1 ... R7 are selected so that they are on average greater than normal. At the outlet ends of the multi-cylinder dryer where the dry solids content (ka) of the web (W) is on average higher, a wire tension T4 ... T7 is used which is on average greater than at the beginning of the drying section. <IMAGE>

Inventors

• 👤 Reima Kerttula

Bibliographic Details