Keeping up Appearances

SICPA Eastern Region Technical Manager Dave Steele lists the most common signs of improper coating formulation as deriving from poor wetting or poor adhesion characteristics. If the coating being employed is printed over an ink containing excessive silicone, the coating may exhibit reticulation, pinholing, etc., resulting in poor coverage and poor performance. High levels of silicone within inks also cause inefficient intercoat adhesion between the coating and the ink.