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US 2007/0165182 A1Published application
Sheeting and methods for the production thereof
AssigneeGiesecke & Devrient GmbH
InventorsWinfried Hoffmuller, Theodor Burchard, Thorsten Pillo, Manfred Heim
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Abstract
The present invention relates to a foil material for transfer to a target substrate, and methods for manufacturing such a foil material. In a method according to the present invention, a plastic substrate foil (32) is provided that is suitable for aligning liquid crystal material. To the substrate foil (32) is discontiguously applied a layer (34) comprising a liquid crystal material that is aligned.
Claims55
A method for manufacturing a foil material for security elements, having the method steps:
- a) providing a plastic substrate foil that is suitable for aligning liquid crystal material,
- b) discontiguously applying a first layer comprising a liquid crystal material to the substrate foil, the liquid crystal material being aligned.
A security element for securing valuable articles, having:
- a discontiguously present layer comprising a liquid crystal material;
- and
- a contiguously present functional layer that is disposed directly over the discontiguously present layer comprising liquid crystal material, the functional layer being formed by a UV-curing lacquer layer, a layer comprising cholesteric liquid crystal material or an embossing lacquer layer.
Dependencies are inferred from the claim text.