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gravure cylinder layers

gravure cylinder layers

Jan 16, 2021

De-Chrome and Re-Chrome. Photographs of gravure-coated catalyst layers as a function of gravure cylinder mesh/volume fraction and speed ratio. It encompasses easy printing operation. While a copper layer is sufficient for electromechanical gravure, an additional zinc layer is required for laser gravure. The observed dependence of coating quality on cylinder mesh and speed ratio is consistent with gravure coating theory. ROTOGRAVURE Printing Rotogravure: (typically referred to as Gravure) An intaglio process (in-tal-yo means engraved or cut in) in which a negative image is etched into the surface of a copper printing cylinder as tiny cells or dots of various sizes and depths. Advantages of rotogravure printing. The engraving system uses a laser imager to give a crisp, precise & sharp output. Printing speed: rotogravure is qualified by a wonderful print quality and impressive printing speed. gravure printing are discussed, such as preparation of gravure cylinders, engraving quality and the effect of engraving ... printed layers. Copper Plating. Hence, gravure has to bear the added burden of the supplier’s infrastructure cost, transport cost, and profit margin (Luman, 2017; Ellis, 2017). The gravure printing cylinder is a steel base plated with nickel, copper and finally chrome. In operation the cylinder is bathed in printing ink and wiped clean with a carbon steel doctor blade. We apply the various metal layers using the required strength and sequence, depending on the special requirements on the gravure cylinder. Current technology gravure cylinders have two layers of metal on a steel base: soft engravable copper and hard protective chrome. The copper is … This was the beginning of the modern rotogravure process. Gravure printing of fine features required for To clarify, two unlike metals, carbon steel and chrome, are in constant contact with an alkali solution between them. In the case of rotogravure, the cylinder prints directly on the layer. Laser precision for gravure & flexo. All cylinders have same tri-helical-type engraving pattern. The base rotates in a bath or tank filled with a copper sulphate solution. We use new cylinders or prepare previously used gravure cylinders again. If you have cylinders still in production, where the chrome is worn but the engraving is still good, we can also De-Chrome and Re-Chrome cylinders, often known as De and Re in the industry. The machine processes rotogravure cylinders, flexo plates, embossing cylinders, anilox rollers and high-depth speciality coating cylinders. Print quality: rotogravure has an invariant printing personality. Pre-impregnated melamine paper is known as decorative paper which base paper with the help of rotating gravure cylinders, with advantages of waterproof, anti-heat, anti-lighting, anti-resistance and better soft feature than melamine paper. Proofed gravure cylinders are cleaned, and then packaged and shipped to the customer. Laser engraving is ideally suitable for high resolution line work on paper, foil and board. We apply various metal layers using the required strength and sequence, depending on the special requirements on the gravure cylinder. Rossini SpA presents Ecograv System: the world’s first production line for rotogravure cylinders without copper and chrome coating ready for electromechanical engraving. The invention of photography led to the method of transferring a photo image onto a carbon tissue coated in a light-sensitive gelatine which allowed the etching of an image onto a steel, copper covered cylinder. 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