Security at its Best

HRI coatings are not as commonly available as aluminum metallization, so one possibility is combining zinc-sulfide with a directly-embossable polyester film. Instead of putting the coating on the film after the hologram is embossed, currently, Toray is experimenting with a process that embosses through the HRI coating, basically creating an on-demand security hologram. However, this process has received some criticism because it could prove bad if in the wrong hands. Toray is proceeding cautiously to ensure this does not occur.