High-Tack Pressure Sensitive foamboard features an extruded polystyrene core with clay coated liners. One liner features a smooth clay-coated paper, perfect for printing. The second liner features a high tack self-adhesive film covered by a protective release paper. Manual application is quick and easy, just peel and stick but beware, this foamboard features an aggressive adhesive that immediately grabs onto photo media and smooth paper, so getting the placement right on the first try essential. Once applied, simply manually burnish the surface and then place in a cold vacuum frame or through cold rollers to fully activate the adhesive. After pressure application this forms an incredibly strong permanent bond.