A UV tape pull is a test method used to check the adhesion of UV coating or ink. There is no official test method, but this has become a de facto test method used by UV printers. Using 1/2" 3M 610 tape, the tape is applied to the printed substrate and pulled off. If the coating/ink does not delaminate, the adhesion is considered acceptable. Reasons for poor adhesion would include: substrate has too low a dyne level (surface energy), additives to the ink are not compatible with the coating, and under cure/over cure with the UV dryer. Always use an ink that is compatible with UV coating. PIA's Paper & Ink Lab can evaluate UV coating and ink adhesion.