Anti-counterfeiting identification card with asymmetric structure

Abstract

The invention provides an anti-counterfeiting identification card with an asymmetric structure, can reduce cost of a single-sided anti-counterfeiting identification card on the basis of ensuring realization of a full-page holographic anti-counterfeiting image on a surface of the anti-counterfeiting identification card. The anti-counterfeiting identification card comprises a base layer and laser etching layers, wherein a first composite surface layer and a second composite surface layer are respectively arranged on one side, far away from the base layer, of the two laser etching layers, the first composite surface layer comprises a bearing base material layer and a structure supporting layer, a holographic micro-nano structure is formed on the structure supporting layer in an impressing mode, a structural surface where the holographic micro-nano structure is located is covered with a transparent dielectric coating layer composed of an oxide film with the refractive index larger than 1.8, and a protective layer is arranged, the protective layer and the structure supporting layer are made of the same material, a difference value between a thermal expansion coefficient of the materialand thermal expansion coefficients of the materials of the base layer, the laser etching layer and the bearing base material layer is [+30%, -30%], and the second composite surface layer comprises a bearing base material layer and a base layer. The invention further discloses a manufacturing method of the anti-counterfeiting identification card with the asymmetric structure.

Description

technical field [0001] The invention relates to the technical field of anti-counterfeit card production, in particular to an anti-counterfeit card with an asymmetric structure and a production method. Background technique [0002] In today's society, various card-type documents represented by second-generation ID cards are widely used in fields such as identity authentication, fast payment, and access control management. Due to their functional requirements, these cards are added with functions such as anti-counterfeiting images and endorsement information on the card itself, so as to achieve the purpose of safe use. In the card production process, different structural layers will be set, and the corresponding functional requirements will be realized by embedding holographic micro-nano structures and laser etching endorsements on the corresponding structural layers. Films of different materials are used for different structural layers, and then formed by gluing, hot pressin...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the full-page holographic anti-counterfeit image cannot be simultaneously realized and the cost of one-sided card is reduced, the present invention provides an anti-counterfeit card with an asymmetric structure, which can realize the full-page anti-counterfeit card surface. Based on the holographic anti-counterfeiting image of the version, the cost of single-sided anti-counterfeiting cards is reduced

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