Process and arrangement for sealing the gap between the ends of a gravure printing plate mounted on a printing cylinder
AssigneeBASF SE
InventorsGerhard Bleckmann, John Lynch, Heinz Mohr
Life of this patent
Estimating the term…
Abstract
The gap (15) formed between the end portions (5) of a gravure printing plate (3) which is anchored in a groove (2) of a printing cylinder (1) on which the plate is mounted is covered with a sheet (6) which overlaps the end portions. The gap cavity (9) thus formed is then filled with a thermoplastic and/or hardenable material and when this has hardened the cover is removed.
Claims24
A process for sealing the gap between the ends of a gravure printing plate mounted on a printing cylinder of a sheet-fed or reel-fed rotary gravure printing machine, one or both ends of the gravure-printing plate being folded over and hooked into a groove running parallel to or obliquely to the printing cylinder axis, the process comprising
- placing a sheet over the gap and the adjoining two end portions of the surface of the gravure printing plate,
- pressing the sheet against the surface of the gravure printing plate so that the gap is covered in a flush manner by the sheet,
- filling the resulting gap cavity with a thermoplastic and/or hardenable material,
- solidifying the filling material and
- removing the sheet after the filling material has hardened.
Arrangement for sealing the gap between the ends of a gravure printing plate mounted on a printing cylinder of a sheet-fed or reel-fed rotary gravure printing machine, the arrangement comprising
- a printing cylinder with a groove running parallel to or obliquely to the printing cylinder axis, in which groove one or both ends of the gravure printing plate have, after being folded over, been hooked and anchored,
- a sheet resting on the two end portions, adjoining the gap, of the surface of the gravure printing plate so as to cover the gap,
- a pressure member which overlaps these end portions, supports the sheet and is connected to a holding-down device, and
- one or more feed channels, opening into the gap cavity, for the filling material or for a pressure-generating medium and/or a heating or cooling medium.
Dependencies are inferred from the claim text.