Aqueous coating / varnish
A thin clear liquid finish that seals printed ink and adjusts sheen without adding the thick plastic film of lamination.
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What it is
Aqueous coating and press varnish are thin liquid finishes laid over printed ink. Aqueous coating is water based, dries quickly, and is usually flooded across the sheet for rub and fingerprint resistance. Varnish behaves more like a clear printing ink and can be gloss, satin, or matte, across the whole sheet or in selected areas.
Reach for either when a brochure, carton, or postcard needs more protection and a controlled sheen without the thicker plastic film of lamination. They are quieter finishes than spot UV: a varnish can pick out an area, but it does not normally build the hard, wet-looking surface or raised edge associated with UV-cured spot gloss.
Gotcha: a coating changes the working surface. Glue, foil, inkjet addressing, and pens may refuse to stick, so leave those areas uncoated. Heavy coverage can also crack at a fold if the stock is not scored first. Specify the finish and exactly where it stops instead of writing only 'varnish' on the job ticket.
Ask AI for it
Prepare this carton artwork in Adobe InDesign for a flood satin aqueous coating. Add a separate nonprinting annotation layer that marks glue, barcode, and inkjet-date areas as coating knockouts, keep every fold on a scored line, and export the print art as PDF/X-4. Also export a one-page coating map that labels coated and uncoated regions so the finisher can verify the mask before production.