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Aluminum Foil Overprint Varnish: Formulation & Testing Guide
07/04/2026
In flexible packaging printing, aluminum foil — whether the harder 0.2–0.25 mm variety or the softer 0.07–0.09 mm grade — receives what the industry calls overprint varnish (OP varnish), also known as gloss coating or OP protective agent...
Packaging Print Gloss: UV and Water-Based Varnish Guide
05/29/2026
Surface varnishing transforms a printed package from flat ink-on-paper to a finished product with depth, protection, and shelf appeal. The two dominant technologies — UV varnish and water-based varnish — serve different applications and ...