Abstract:
A security element, preferably a security wire, for a secure document, may include a masking structure for reducing the visibility of a surface of the element when the latter is located inside the document or on the surface thereof, the masking structure comprising a mixture of at least two nanometric fillers.
Abstract:
A high-durability paper and method of manufacture thereof. The paper may be intended for manufacturing bank notes, offering good resistance to circulation, especially good resistance to pulverulent soiling in dry medium, to friction in wet medium and to soiling in wet medium, which is moreover appropriately capable of satisfying all the manufacturing constraints, especially the printing constraints. The high-durability paper includes a fibrous substrate, and a protective coat completely covering at least one face of the fibrous substrate, where the protect coat includes at least one base layer on the substrate side and a polyurethane-based outer printability layer that covers the base layer.
Abstract:
The invention relates to a crease-resistant security film including: fibers; polyurethane aggregates, the proportion of said polyurethane amounting to between 5 and 45 wt. % in relation to the total dry weight of the fibers and the polyurethane, and said polyurethane having a break elongation that is higher than 600%; and a main cationic flocculant in a quantity of between 1 and 5 wt. % in relation to the total dry weight of the fibers and the polyurethane. The invention also relates to the method for the production of said film, and to a security document including said security film.
Abstract:
The present invention relates to a security element (20) to be built into an item, particularly a document (10), said security element comprising a holographic layer, enabling a volume hologram to be generated, and a non-holographic variable opacity structure generated by the presence of: a) one or more cutout(s) and/or at least partially translucent areas and moreover at least partially opaque area(s); and/or b) oriented platelet pigments. The variable opacity structure is at least partially placed over the hologram within a region of the security element observable in transmitted light.
Abstract:
A multilayer structure contains a first security element, in particular a watermark or pseudo-watermark. A diffusing structure having a diffusing region that at least partially covers the first security element. A first luminescent layer at least partially covers the first security element and is capable of emitting a visible light of a first color when subjected to a predefined excitation radiation. The first luminescent layer extends between the first security element and the diffusing structure or the diffusing structure extends between the first security element and the first luminescent layer. In one variation, the first security element is observable in light transmitted through the multilayer structure when the structure is subjected to a predefined excitation radiation and/or in white light, only from the face of the structure situated on the same side as the first security element.
Abstract:
A security element for integration into documents for authentication thereof. The security element comprises a substrate. A reflective optical structure and a reference pattern are disposed on the same side of the substrate. The reflective optical structure is made up of an array of Fresnel lenses. The reference pattern appears in the foreground when observed by an observer. A virtual image of the observer appears in the background behind the foreground pattern.
Abstract:
A multilayer structure incorporating at least one security element. The multilayer structure includes a substrate made of a thermoplastic material with at least one non-opaque region. The multilayer structure further includes an external layer. An internal layer is disposed between the substrate and the external layer. The external and internal layers are made of a thermoplastic material. An opening in the internal layer defines a security region. An insert having a non-opaque security element is at least partially disposed within the security region. The security element and the non-opaque region of the substrate at least partially overlap.
Abstract:
The invention relates to a crease-resistant security film including: fibres; polyurethane aggregates, the proportion of said polyurethane amounting to between 5 and 45 wt. % in relation to the total dry weight of the fibres and the polyurethane, and said polyurethane having a break elongation that is higher than 600%; and a main cationic flocculant in a quantity of between 1 and 5 wt. % in relation to the total dry weight of the fibres and the polyurethane. The invention also relates to the method for the production of said film, and to a security document including said security film.
Abstract:
A structure that is customizable by thermal transfer printing, in particular D2T2 or re-transfer, in particular for a multi-layer secure card structure, may include a layer of a non-opaque material for receiving thermal transfer printing, preferably comprising a vinyl polymer, in particular non-halogenated, better still a polyvinyl ester, and more preferably still polyvinyl acetate (PVAc); and a fibrous paper sub-layer, comprising at least one security element incorporated into the paper and/or arranged on the surface of the fibrous sub-layer.
Abstract:
A method for authenticating a security element by superimposing N shared colour images in order to obtain at least one target colour may include a phase of constructing an authenticator system that includes a step of selecting a target colour; a step of selecting a series of N decomposition colours which, by means of superimposition, together enable the target colour to be obtained; and a step of recording the N shared images each with a decomposition colour from the series. A security element comprising at least one shared image may be obtained according to the method.