摘要:
The invention relates to a security element (1) which comprises a substrate (6) bearing at least the following elements on at least one of the faces thereof, namely: an optical structure (4) producing at least one image of at least one pattern (5) and/or producing image points of a light source illuminating the optical structure; and an adhesive (14), in particular a heat-sealable varnish, covering at least part of the aforementioned face of the substrate (6) without fully covering the optical structure (4).
摘要:
The present invention relates to a security element (1; 30) intended for being added to or on a security document (21; 31), including at least one first optical structure (2) such as a standard rainbow hologram and/or a raster image representing a first pattern (22) and at least one second optical structure (3), which is achromatic and represents a second pattern (23) at least partially identical to the first pattern (21).
摘要:
The invention relates to a security element (1) which, prior to the incorporation thereof into an object, particularly a security document, comprises a substrate (6) bearing at least: an optical structure (4) producing at least one image of at least one comparison pattern and/or producing image points of a light source illuminating the optical structure; and a reference pattern (3), in which the optical structure (4) and the reference pattern (3) are borne by the substrate (6) in order to allow the simultaneous observation of an image provided by the optical structure (4) and of the reference pattern (3).
摘要:
A process for manufacturing a sheet material comprising at least two fibrous plies juxtaposed one on top of the other, including the following steps: a first paper ply is produced by filtration of an aqueous suspension of fibers on the wire cloth of a cylinder mold or of a former; a second paper ply is produced on the wire cloth of a second cylinder mold so as to form at least one recess in the second ply; at least one at least partially transparent element is placed between the two plies that are still wet; and the two plies are joined together so that said at least one recess of the second ply, the at least one at least partially transparent element and the at least one elongate region of zero thickness of the first ply are situated facing one another; then drying the obtained structure.
摘要:
The present invention concerns a flat safety element, comprising a support that contains, on at least one of its faces, a set of elementary characters, characterized in that said elementary characters are equipped with a variation in shape and/or density and/or size in such a manner as to ensure a detectable design is at least visible.
摘要:
A process for manufacturing a sheet material comprising at least two fibrous plies juxtaposed one on top of the other, including the following steps: a first paper ply is produced by filtration of an aqueous suspension of fibers on the wire of a cylinder mould or of a former, a partly transparent element being inserted into the ply during the formation of the ply, and such that the transparent element is placed in the elongate region of zero thickness; a second paper ply is produced on the wire of a second cylinder mould so as to form at least one recess in the second ply; the two plies are joined together so that at least one recess in the second ply is located facing the elongate region of zero thickness of the first ply; and the structure thus obtained is dried.
摘要:
A process for manufacturing a sheet material comprising at least two fibrous plies juxtaposed one on top of the other, including the following steps: a first paper ply is produced by filtration of an aqueous suspension of fibers on the wire of a cylinder mould or of a former; a second paper ply is produced on the wire of a second cylinder mould so as to form at least one recess in the second ply; at least one at least partially transparent element is placed between the two plies that are still wet; and the two plies are joined together so that said at least one recess of the second ply, the at least one at least partially transparent element and the at least one elongate region of zero thickness of the first ply are situated facing one another; then drying the obtained structure.
摘要:
The invention relates to a sheet having a recto face and a verso face together with at least one watermark or pseudo-watermark and such that at least part of said watermark or pseudo-watermark is observable in transmitted light from only one of the faces of said sheet.
摘要:
A wet process for manufacturing a fibrous ply on a forming fabric of a paper machine, including a stack of fabrics, the stack of fabrics having a surface fabric and at least one under-fabric, these being superposed, the fibrous ply having at least one element of a given thickness, wherein it includes the following step: formation of the ply by the dewatering of an aqueous fiber-based suspension on the forming fabric, the stack of fabrics of which includes a reduced dewatering region compared with the first under-fabric, in at least one under-fabric and/or beneath the surface fabric, the reduced dewatering region being in correspondence with the position that the element will have.
摘要:
A security paper comprising a fibrous substrate comprising a watermark having repeating motifs, and a security structure that does not completely cover the watermark and has at least one semi-reflective area which is superposed at least partly on the watermark; which paper on the one hand allows observation, through the semi-reflective area, at least partially, of one of the motifs, and on the other hand allows observation at least partially of another of said motifs in a region of the watermark that is not covered by the security structure.