Coating machine for upgrading sheet material
AssigneeMAN Roland Druckmaschinen AG
InventorsHarald Bayer, Georg Herzan, Klemens Kemmerer
Life of this patent
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Abstract
A coating machine for applying a flowable coating substance to a sheet material to improve its surface. The coating machine has a series construction which lends itself to easy modification and versatile use. The coating machine includes, in a sheet conveyance direction, a first coating unit for applying a flowable substance to a front side of the sheet material, a sheet turning unit for reversing the position of the sheet, a first coating unit for applying a flowable substance to a reverse side of the sheet material, and sheet delivery unit. The coating units may have similar or identical constructions with interchangeable dosing systems.
Claims14
A coating machine for applying coatings to sheet material as it is moved in a sheet conveyance direction for improving the sheet surface quality comprising in the sheet conveyance direction a feeder for feeding sheet material, at least one coating unit for applying a flowable coating substance to a front side of the sheet material, a sheet turning unit for reversing the position of the sheet, at least one coating unit for applying a flowable coating substance to a reverse side of the sheet material, a delivery unit for receiving and delivering the coated sheet material, sheet transfer drums (4) for transferring sheets between said coating units said coating units being of like construction each including a form cylinder, a counter pressure cylinder, and a metering system having an application roller associated with the form cylinder, said form cylinder for each coating unit carrying a flexible printing form for receiving a flowable coating substance from the metering system for transfer to passing sheet material, and the flexible printing form for each said coating unit form cylinder being one of a flexible planographic printing form or a flexible raised printing plate.
A coating machine for applying coatings to sheet material as it is moved in a sheet conveyance direction for improving the sheet surface quality comprising in the sheet conveyance direction a first coating unit for applying a flowable coating substance to a front side of the sheet material;
- a second coating unit for applying a flowable coating substance to a front side of the sheet material;
- a sheet turning unit for reversing the position of the sheet, a first coating unit for applying a flowable coating substance to a reverse side of the sheet material;
- a second coating unit for applying a flowable coating substance to a reverse side of the sheet material;
- a delivery unit for receiving and delivering the coated sheet material;
- and said coating units each including a printing form carrying form cylinder, a counter pressure cylinder, and a dosing system having an application roller associated with the form cylinder;
- and one of said coating units for the sheet front side and one of the coating units for the sheet reverse side being operable for applying a patterned coating to the sheet material and one of said coating units for said first side and one of said coating units for said reverse side being operable for applying a full surface coating to the sheet material.
Dependencies are inferred from the claim text.