UV printing
When Does UV Printing Need Primer?
Should every UV job be primed?
Use primer only when the ink, equipment and substrate suppliers approve it and a controlled trial shows a useful result. Primer is not a universal substitute for substrate testing.
Ask compatibility questions first Confirm whether the machine supports the intended primer application method and obtain substrate-specific guidance. Record any restrictions for reflective surfaces, coatings or handling. A recommendation for a different manufacturer’s ink system does not establish compatibility with your system.
Compare prepared samples Use paired samples with documented preparation. Assess visual appearance and the agreed adhesion criteria after the specified interval. Keep the application method consistent and include possible effects on transparency, gloss or texture in the approval decision.