a thin material which is applied to paper or other substrate through the combination of heat and pressure. Hot-stamping foil can be used to support holographic images which can be transferred, using heat and pressure, onto another substrate such as paper or plastic. The layers containing the holographic image are extremely thin, typically 5-6 microns. Therefore, they need to be supported on a thicker material such as 19-micron thick polyester. The action of stamping the foil with a heated die causes a ‘release’ layer between the hologram and the polyester support, to melt while simultaneously softening an adhesive ‘size’ coating. These combined effects allow the hologram to leave the polyester support and adhere to its new location.
