Patent ID: 7940185
Filing Date: 2011-05-10
Classification: B42D,G06K,H01L,Y10T

Abstract:
1. A multilayer structure forming a cover paper for a passport, the multilayer structure being folded in accordance with a fold of the cover, the structure including a radio-frequency identification device having a chip, the materials constituting the various layers of the multilayer structure being selected, as the thickness of said layers, in such a manner that the cover withstands mechanical and thermal shocks, and is configured to be subjected to at least one of graining treatment by having a film deposited thereon by hot transfer under pressure, decoration treatment by having a film deposited thereon by hot transfer under pressure, and lamination treatment while depositing security films, the structure including at least one sheet having a fiber base, the chip being received, without leading to extra thickness, in the thickness of a first layer whose thickness is greater than the thickness of the chip so that said chip is protected from shocks both by the first layer and by a support layer, one face of which is covered by the first layer, the thickness of the first layer being sufficient to ensure that during a compression of said treatment, the thickness of the first layer is greater than that of the chip, the first layer presenting toughness enabling said layer, in the event of short-term compression, to conserve thickness greater than or equal to the thickness of the chip, the chip being received in the thickness of the multilayer structure without leading to extra thickness, the structure not presenting any localized extra thickness.