Method for producing security elements by the individualization of volume holograms and security elements produced therewith

Abstract

When coating a document surface () having relief-like information () carrying personal data, for example, with a monomer-containing liquid UV adhesive () across the entire surface and then laminating thereon a volume hologram (), the varying adhesive thicknesses between the volume hologram and the document surface resulting from the relief cause differentiated swelling and thereby a differentiated color shift of the hologram. After the desired color shift is achieved, the UV adhesive () is completely cured. In this way, individual holographic information is obtained, which is located exactly above the relief-like information of the document. With this method, holographic overlays comprising personal data and a passport picture can be produced, and it is possible to link defined optical document information to the hologram in an accurately positioned manner, so that information is visible both non-diffractively and, from a different viewing angle, holographically in a different color.