Abstract: Design of a device for application of a fluid treatment to a moving web having the following structural components: a tank through which the web moving in an upwardly direction is passed for impregnation with a treatment liquid; drainage plate assembly 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 along the top surface of the drainage plate and onto the web; and means for providing the heat carrier to the space within the drainage plate for adjusting the temperature of the drainage plate thereby affecting the temperature of the treatment liquid being applied to the web.

Abstract: The device for impregnating a web laterally guided in the width direction with a treatment liquid comprises a tank for the treatment liquid through which the web is taken on an impregnation section and a pair of squeeze rollers arranged above the tank between which the web can be taken from below immediately after leaving the tank. The tank takes the form of an upright flat channel, the flat sides of which are tightly opposed, through which the web can be taken upwards, which can be kept full up to an optional level and the lower end of which is limited by a resilient sealing arrangement bearing on the web from both sides.