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Nan Ning Dong Yun Plate Making Co.,Ltd

 
 
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Gravure cylinder 

  Category : Media and publishing->Printing and binding supplies->gravure cylinder

     
Gravure cylinder
       

  Product Specification
 
  Model No:      all size
  Country  CN
  Materials  ironsteel
  Color  sliver

 

    Product Detail
  The gravure cylinder is a hollow or shafted steel cylinder used on gravure cylinder press. The cross-section of the cylinder must be as close to a perfect circle as possible, to avoid generating any "bumps" or printing distortions.
Onto the gravure cylinder base is electroplated a layer of copper, into which the image will be carved. Copper has been used as the image-carrying layer since the earliest days of intaglio printing, and it provides the highest degree of predictable, structural, and functional results. It is easy enough to electroplate and to engrave, and it also withstands increased printing pressure without causing breakdowns in the walls of the cells comprising the image. After plating the copper to the cylinder base, the copperplated surface is ground down to a reduced size, if necessary. Polishing and finishing operations ensure that inaccuracies inherent in the copperplating procedure are compensated for.
On the other hand,the images is provided or designed by customers, and was processed by our technicians with Photoshop and Adobe illustrator softwares,the customers must review the images and give their permission to start engrave.then computer-controled hig-speed engraver is used to carve the images on the cylinder body, The cylinders for printing different colors are engraved at a different screen and angle. The image engraved comprising many tiny cells, The cells have the shape of an inverted pyramid and their depth may vary from 1 to 50 micrometres, the distribution and depth of which determine the lightness or darkness of a particular image area.
To impart an added degree of protection and lower the coefficient of friction ,a thin layer of chrome is electroplated on top of the engraved cylinder.

   


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