METHOD FOR FEEDING A TREATING AGENT TO AN APPLICATION APPARATUS

摘要

The invention relates to a method for feeding a treating agent to an application apparatus (40) used for applying coating colour or surface size directly or indi­rectly to a paper or board web, in which method part of the treating agent fed to the application apparatus (40) is returned via a bypass line (24) to the treating agent feed system and part of it is passed into an application chamber in the appli­cation apparatus (40), from which application chamber substantially all treating agent fed into it is applied to a moving web or to a transfer surface. The method comprises the steps of measuring the flow of treating agent (Q) to the application apparatus (40) and controlling the feeding of the treating agent on the basis of the measured flow (Q) and of a predetermined set value (Qo), which set value has been selected according to the desired amount of treating agent to be applied to the moving web or transfer surface.