Device for applying a fluid treatment or decoration agent

An apparatus for impregnating a continuously moving web with a treatment liquid or decoration agent, comprising:

• a tank through which the web is passed for impregnation with treatment liquid as it traverses the tank in an upwardly direction, said tank having an upright channel that serves to contain the treatment liquid as it is passed to the web, the upright channel having flat facing sides which are tightly opposed and configured to extend generally parallel to the web, wherein the upright channel has an upper end and a lower end, the lower end being limited by a resilient sealing arrangement that can be brought to bear on the web from both sides and wherein the upright channel can be kept charged with treatment liquid to a desired level;
• a drainage plate assembly having a top surface, a bottom surface, and a bottom edge, said drainage plate being extending across the width of the web and being arranged at an angle with respect to the web, the drainage plate further having a double-wall structure defining a space therebetween for accommodating flow of a heat carrier;
• an applicator assembly for applying the treatment liquid onto the top of the drainage plate so that the treatment liquid flows downwardly from the applicator assembly to the drainage plate in a layer along a line from a location above the top surface of the drainage plate along the drainage plate towards the bottom edge of the drainage plate to the web;
• a means for providing the heat carrier to the space within the drainage plate for adjusting the temperature of the drainage plate thereby affecting temperature of the treatment liquid being applied to the web;
• and
• means for guiding the web through the tank in the upwardly direction.