A METHOD FOR CONTROLLING THE MOISTURE PROFILE OF A PAPER WEB

摘要

The invention relates to a method for controlling the moisture profile of a paper web or board web processed in a heated multi-roll calender to optimise the qualities of the paper or board, especially gloss. The method according to the invention is characterised in that moisture measurement is carried out both on either surface of the web and as through-measurement, and the measurement results thus obtained are specified by means of a thermodynamic model which calculates the moisture of the web in three layers, and that the results thus obtained are used for controlling the supply of moisture to the web.