Photopolymer Holograms Top Pira's List of Disruptive Technologies in Security Printing
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Unlike the silver-halide materials that were used in the 1980s and 1990s, which were essentially fine-grain photographic films and required wet chemical development, the new photopolymer materials can be optically exposed with the holographic image and stabilised with an exposure to ultra-violet light with no wet processing. Whereas silver halide film was thick and intractible the new photopolymers can be used in the form of thin transfer foils that can be applied to documents as stripes, threads or patches. Pira sees significant potential for this type of hologram is in banknotes, travel documents and plastic cards.
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