Application nozzle, application unit and method
AssigneeVoith Patent GmbH
InventorBenjamin Mendez-Gallon
Life of this patent
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Abstract
An application nozzle, an application unit, and a method are used for applying a liquid or pasty coating medium onto a running surface, in particular onto a running surface in a machine for producing or processing a fibrous web. The application nozzle contains a fluid head which is configured to produce a film from a coating medium or a curtain from a coating medium, and the application also additionally contains a blowing head which is configured to generate a linear jet of gaseous medium. An impact line is additionally provided on which the linear jet of gaseous medium impacts the film or curtain made of the coating medium, thereby forming a spray curtain. The blowing head is arranged such that the spray curtain is oriented in the direction of the running surface.
Claims17
An application nozzle for an application of a coating medium being a liquid coating medium or a pasty coating medium onto a running surface, the application nozzle comprising:
- a fluid head formed to generate a fluid film composed of the coating medium or a curtain composed of the coating medium;
- a blow head formed to generate a linear jet of a gaseous medium, wherein an impact line is formed where the linear jet of the gaseous medium impacts the fluid film or the curtain composed of the coating medium, thereby forming a spray curtain, said blow head is disposed so that the spray curtain is directed in a direction of the running surface, wherein said blow head further has a wall;
- and
- a support surface disposed so that the coating medium is discharged from said fluid head onto said support surface, and is guided as the fluid film along said support surface, wherein said support surface is provided at least partially by said wall of said blow head, wherein said support surface has a lower end forming a breaking edge, and the impact line is provided at said breaking edge or at a distance of less than 5 mm from said breaking edge.
An application unit for an application of a coating medium being a liquid coating medium or a pasty coating medium onto a running surface, the application unit comprising:
- a rotatable transfer roller having a surface functioning as the running surface;
- at least one application nozzle, containing:
- a fluid head formed to generate a fluid film composed of the coating medium or a curtain composed of the coating medium;
- and
- a blow head formed to generate a linear jet of a gaseous medium, wherein an impact line is formed where the linear jet of the gaseous medium impacts the fluid film or the curtain composed of the coating medium, thereby forming a spray curtain, said blow head is disposed so that the spray curtain is directed in a direction of the running surface.
Dependencies are inferred from the claim text.