This product has been designed to improve the adhesion of different inks on difficult substrates. The primer forms a completely clear and colorless film after curing which accepts a wide range of solvent-based, water-based and UV-curing printing inks. The primer is specially suitable for the presses which have no corona discharge treatment unit. It is generally used on untreated PE, PP, BOPP and metallized PP films and PP-based papers. It can also be used on aluminum foils.