Toner Based Adhesive: This is a simple 2 to 3 step process. The artwork you want foiled is first printed in a rich black through a digital press using a toner. The sheet is then run through a heated laminating process (sometimes referred to as sleeking) where the foil adheres to the black printed image. The sheet can then run through the digital printer where CMYK can run alongside the foiled areas, or in many cases, over the foil creating all types of metallic colors.
Polymer Based Adhesive: With this process, through a digital enhancement press, a raised polymer is applied where the foil is to appear. Through a separate station on the digital press, the foil adheres to where the polymer is applied. This is usually performed after the printing process and can provide a textured raised look to the foiled areas, creating unique designs for all types of printed materials.