Application device
AssigneeVoith Paper Patent GmbH
InventorsKurt Eichinger, Lothar Pfalzer
Life of this patent
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Abstract
The invention relates to a device for the application of a liquid medium onto at least one side of a moving material web, specifically a cardboard web, including at least one roll and at least one feed device for the coating medium, whereby during operation of the device a liquid sump forms between the roll and the web. Nozzle lips of a nozzle body of the feed device are configured so that the desired dimension of the open surface of the liquid sump and the depth of immersion of the nozzle lips into the liquid sump, and thereby the level of the liquid sump are adjustable. The nozzle lips are surrounded up to 80% of their total length by the liquid sump.
Claims11
A device for the application of a liquid medium onto at least one side of a moving cardboard web, comprising:
- at least one roll disposed proximate to and defining a liquid sump with the cardboard web, said liquid sump having a surface and containing a portion of the liquid medium;
- and
- at least one feed device disposed proximate to said at least one roll, said feed device including a nozzle body having at least two walls substantially parallel to each other defining a metering slot therebetween, and at least two nozzle lips spaced apart to form a nozzle opening therebetween at an end of said at least two nozzle lips, at least one of said at least two nozzle lips being adjustably connected with a corresponding one of said at least two walls such that said liquid medium traverses said metering slot to said nozzle opening, said nozzle opening being disposed in said liquid sump, said nozzle lips being configured to adjust a size of said surface of said liquid sump by varying at least one of shape of said nozzle lips, size of said nozzle lips and mounting of said nozzle lips to said at least two walls, said nozzle lips having a length, said nozzle lips being adjustably immersed in said liquid sump up to approximately 80% of said length.
Dependencies are inferred from the claim text.