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Abstract

A method for interlaminating a transparent embossed hologram, the transparent embossed hologram comprising a support having two sides, at least one of the two sides either itself being embossed or having a layer thereon which is embossed and a layer of a HRI-material contiguous with the embossed side or embossed layer, comprising the steps of: a) providing the outermost surface of the layer of inorganic HRI-material with a layer of an adhesive composition containing a solution or dispersion of at least one polymer in an organic solvent medium; b) drying the layer of the adhesive composition on the outermost surface of the HRI-material thereby providing a conditioned outermost surface of the layer of inorganic HRI-material with a transparent continuous adhesive layer; and c) laminating the transparent continuous laminatable layer to a foil, wherein the organic solvent medium is selected from the group consisting of ketones, ethers, heterocyclic ethers, lactams, amides, halo-aliphatic compounds, nitriles and esters; wherein at least one of the support and the foil is transparent; and wherein the HRI material is a material with a refractive index of at least 0.3 higher than that of the embossed material. A laminate and a security document comprising the laminate obtainable by the above-disclosed process are also disclosed.

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First Claim