Until now the only way that printers could add a foil effect to specific elements within a design was by using water-based ink. Excalibur has a plastisol solution. 801 Foil Proof is a clear coat plastisol that repels foil. Simply screen-print Foil proof over top of the plastisol where you do not want foil to stick. When you heat seal the foil onto the image, the foil will only stick to the parts of the design that are not clear coated. For best result we recommend using with a printable adhesive.