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Gravure Printing
Gravure is an intaglio printing process. The print layout
is engraved onto the surface of form cylinder as the imager
carrier. The form cylinder has the image area chemically etched
or electronically engraved below the surface of the non-image
area. All the images are screened, creating thousands of tiny
cells.
These tiny cells carry the ink from the ink tray while the
excess ink is stripped off by means of a blade. The impression
roller presses the web against the form cylinder and the ink
penetrates into the web creating the printed image by capillary
action.
The printed web is then dried in ovens between one printing
unit and the next by high velocity heated air. After the last
color has been applied and dried, the web is wound back into
the original roll form.
Gravure printing presses configuration is particularly flexible;
these machines are best suitable for the production of all
kinds of packaging materials with various formats.
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