3. Printing and decorating on flexible substrates

These are generally films or flexible sheets.

Flexographic and rotogravure printing processes use colored inks to continuously print flat, flexible substrates (films or sheets).

Marking speeds: from a few thousand to over 10,000 prints/h.

Checking print adhesion: the classic test is simple: a strip of adhesive film is stuck to the print. The print is deemed to be good if it resists peeling off, and bad if it does not.

3.1 Flexography

A highly fluid (air-dried) ink is transferred to the plate cylinder via a set of inking rollers. The rubber cliché, embossed and upside-down, is printed right-side-up on the product to be printed. This is the...

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