Method of refurbishing rotogravure cylinders, rotogravure cylinders and their use
AssigneeMeton Gravure Technologies, Ltd.
InventorIoannis IOANNOU
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Abstract
The rotogravure cylinder comprising a rotary gravure base and thereon a copper engraving layer is refurbished to contain a zinc layer between a gravure base and a layer package suitable for engraving and printing. This layer package for instance comprises a metallic support layer, a copper engraving layer and suitably a protection layer. Deposition of the zinc layer may be tuned for thickness variation, in combination with deposition of the layer package in a fixed thickness.
Claims23
Method of refurbishing a rotogravure cylinder comprising a rotary gravure base and thereon a copper engraving layer, which method comprises the steps of:
- (i) providing the rotogravure cylinder to be refurbished;
- (ii) removing the copper engraving layer, therewith obtaining the exposed rotary gravure base;
- (iii) applying a zinc layer to the exposed rotary gravure base, wherein the zinc layer comprises zinc or a zinc alloy;
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- (iv) applying a layer package suitable for engraving and printing, comprising a metallic support layer and a new copper engraving layer.
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Retrogravure cylinder comprising a cylindrical rotary gravure base on which a circumferential zinc layer containing zinc or a zinc alloy extends, the base and the circumferential zinc layer having a mutual interface, on which circumferential zinc layer a layer package suitable for engraving and printing is present, which layer package comprises a metallic support layer and a copper engraving layer.
Use of a rotogravure cylinder comprising a cylindrical rotary gravure base onto which a circumferential zinc layer extends, the base and the circumferential zinc layer having a mutual interface, on which circumferential zinc layer a layer package suitable for engraving and printing is present, which layer package comprises a metallic support layer and a copper engraving layer, which is engraved with a desired pattern for the printing of packaging materials by transfer of ink from the rotogravure cylinder to the packaging material.
Dependencies are inferred from the claim text.