Whatever printing method is chosen, an overprint varnish enables:
• The print work to be enhanced.
• The rub resistance and the mechanical resistance to be improved.
• The chemical resistance of the ink film to be improved.
This chapter outlines the 4 major families of overprint varnishes and summarises their main properties.
1/ Conventional offset / letterpress varnishes
2/ Acrylic varnishes
3/ UV varnishes
4/ Flexo / Gravure varnishes
5/ Summary tables
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