Patent FR-2892843-A1 (FR)
Title: Structure for producing safety/value document, comprises electronic device, partially intercalated fibrous layer with window, adhesive layer in contact with intercalated layer, and removable anti-adherent protective film of adhesive layer
Inventor: RANCIEN SANDRINE
IPC: D21H21/40
Filed: 2006-11-14
Abstract: The structure for producing safety or value document, comprises an electronic device (8), partially intercalated fibrous layers with a window (4) in which the electronic device partly extends, an adhesive layer that is in contact with the intercalated layer, a removable anti-adherent protective film of an adhesive layer, an additional intercalated layer with the window in a module, and a masking layer laid out at the right of the window of the intercalated layer to partially mask the electronic device when the structure is observed in a transmitted and/or reflected light. The structure for producing safety or value document, comprises an electronic device (8), partially intercalated fibrous layers with a window (4) in which the electronic device partly extends, an adhesive layer that is in contact with the intercalated layer, a removable anti-adherent protective film of an adhesive layer, an additional intercalated layer with the window in a module, and a masking layer laid out at the right of the window of the intercalated layer to partially mask the electronic device when the structure is observed in a transmitted and/or reflected light, and a visible safety element placed on the section of the structure. The intercalated layer is placed to reflect a light, where the layer is metallized/laminated with metallic film. The intercalated layer comprises a colored core with a white coating, an authentication element and a falsification detection element in which the elements are visible and/or detectable using a specific detection device. The intercalated layer includes a safety element of magnetic/crystalline coating, magnetic fibers, detectable tracers by magnetic resonance and fluorescence X, impression of a varnish or ink, luminescent/fluorescent tracers, photochromic compounds, thermochromic compounds, electroluminescent and/or piezochromatic and/or color change, and optical variable and/or diffractive element such as holographic, iridescent or liquid crystal element. The window of the intercalated layer comprises an image form imitator, a logo or an inscription. The electronic device comprises a flexible support (7) carrying an electronic chip (10) and an antenna (11) connected to the electronic chip, which extends to the window of the intercalated layer, a module with a connection part intended to be connected to the antenna and the electronic chip with an encapsulation resin, and an antenna channeled by the additional intercalated layer. The support is sandwiched between two layers of the structure. The support comprises an additional intercalated layer in which the support of the electronic device is placed. The encapsulation resin is placed in the window of the other intercalated layer. The adhesive layer is colored to partially mask the electronic device when the structure is observed in transmitted and/or reflected light. The window is smaller than the other intercalated layer. The adhesive layer allows a cold assembling of the intercalated layer with an adjacent layer of the safety/value document in which the adhesive layer is a heat activable layer.