Heidelberger Druckmaschinen Ag

Weitmann & Konrad Gmbh & Co. Kg

Reiner Goetz

Reiner Haas

Marius Stelter

Claudius Haas

Michael Bulling

Peter Eppacher

A method for applying powder to a printed sheet includes ejecting air flows from a nozzle bar. The air flows are set in such a way that the air flows which are ejected per meter length of the nozzle bar produce a resultant force acting on the printed sheet of from 0.5 newtons to 16 newtons. A printing press for carrying out the method is also provided.

Method for applying powder to a printed sheet and printing press for carrying out the method

A rotary sprayer () for fluids (), has a rotating disc (), a drive () for the disc (), and a supply device () for the application of fluid () onto the disc (). The disc () has a distribution plane () for the fluid (), and at least one opening () is provided in the distribution plane (), via which a secondary flow () of the fluid () is separated from the main flow () to another plane (). The disc () has a first spray edge () for spraying the working flow () of the fluid () and a second spray edge () for spraying the secondary flow () of the fluid (). Since the main flow is divided into a secondary flow and a working flow, the effective amount of fluid that is used to moisten the workpiece can be reduced without having to therefore reduce the amount of fluid that is supplied e.g. via the pipe conduit. The formation of drops is thereby reliably prevented and a pipe conduit is used that has a cross-section of adequate size to prevent clogging.

Rotary sprayer

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Stuttgart, Germany

Reiner Goetz