Rotogravure Cylinders, Intermediates and Methods
AssigneeParamount International Services Ltd.
InventorIoannis Ioannou
Life of this patent
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Abstract
An intermediate rotogravure product has a cylindrical case onto which a circumferential copper layer extends, the circumferential copper layer having a characteristic surface roughness Rz and porosity. A copper engraving layer is on the circumferential copper layer. A method for engraving into adds a copper engraving layer, followed by engraving a predetermined pattern. A rotogravure cylinder product and method add a copper engraving layer on the circumferential copper layer that can be engraved in accordance with a predefined pattern and protected with a protection layer.
Claims21
An intermediate product comprising a cylindrical base of aluminum onto which a circumferential copper layer extends, the base and the circumferential copper layer having a mutual interface, wherein the circumferential copper layer has a surface roughness Rz of less than 0.5 μm and a porosity of less than 1.0%, and wherein the intermediate product further comprises a copper engraving layer that is present on the circumferential copper layer.
A method for engraving into an intermediate product that is a cylindrical base of aluminum onto which a circumferential copper layer extends, the base and the circumferential copper layer having a mutual interface, wherein the circumferential copper layer has a surface roughness Rz of less than 0.5 μm and a porosity of less than 1.0%, and wherein the intermediate product further comprises a copper engraving layer that is present on the circumferential copper layer, comprising engraving a predetermined pattern into the copper engraving layer.
A rotogravure cylinder comprising a cylindrical base of aluminum onto which a circumferential copper layer extends, the base and the circumferential copper layer having a mutual interface, wherein the circumferential copper layer has a surface roughness Rz of less than 0.5 μm and a porosity of less than 1.0%, and wherein the cylinder further comprises a copper engraving layer that is present on the circumferential copper layer and that is engraved in accordance with a predefined pattern and protected with a protection layer.
A method of manufacturing rotogravure cylinders, wherein a circumferential copper support layer is provided onto a cylindrical base of aluminum, and a copper engraving layer is engraved according to a desired pattern and protected with a protection layer, wherein the provision of the circumferential copper support layer is arranged to obtain a layer with a surface roughness Rz of less than 0.5 μm and a porosity of less than 1.0%.
A method of printing packaging material with rotogravure cylinders, wherein a circumferential copper support layer is provided onto a cylindrical base of aluminum, and a copper engraving layer is engraved according to a desired pattern and protected with a protection layer, wherein the provision of the circumferential copper support layer is arranged to obtain a layer with a surface roughness Rz of less than 0.5 μm and a porosity of less than 1.0%, applying ink to the rotogravure cylinder and transferring at least some of the ink from the rotogravure cylinder to the packaging material.
Dependencies are inferred from the claim text.