Security Paper Aperture Additive Anti-Counterfeiting
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Solution Overview
Problem
Current security documents are vulnerable to counterfeiting by splitting the base layer, allowing counterfeiters to separate the laminate layer and personalized information from the security features, making it difficult to recognize counterfeit documents, especially in documents without machine-readable codes.
Innovation Solution
A security paper with a first and second layer of fibrous substrate, where the first layer has at least one aperture and a security additive embedded in a predetermined region surrounding the aperture, ensuring that the additive is detectable when the layer is split, and a security deposit that overlaps the aperture, providing visible or machine-readable security features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the base layer is made as a single fibrous substrate layer, then the manufacturing process is simple, but counterfeiters can easily split the layer to separate security features from personalized information
Solution Approach 1:
The base layer is divided into a first layer and a second layer, with the first layer containing apertures and security additives, and the second layer providing the surface for personalized information. This segmentation prevents counterfeiters from easily splitting and recombining layers while maintaining manufacturing feasibility through sequential deposition processes.
Solution Approach 2:
Security additives are concentrated in specific predetermined regions surrounding the apertures in the first layer, rather than being uniformly distributed. This local concentration creates detectable security features at critical locations while maintaining overall manufacturing efficiency and reducing material costs.
2Strength
If security additives are embedded deeply within the first layer, then they are harder to remove, but they become less visible and detectable
Solution Approach 1:
The security additives are positioned at the boundary between embedded and exposed states, utilizing the third dimension (depth from surface) to optimize both security and detectability. The predetermined regions extend partially into the thickness of the first layer, creating a gradient of embedment that balances security strength with optical detectability.
3Reliability
If the predetermined region extends over the entire surface area, then security coverage is maximized, but manufacturing complexity and cost increase
Solution Approach 1:
The predetermined regions are configured to extend only over specific portions of the surface area rather than the entire surface, concentrating security additives where they are most needed around the apertures. This localized approach reduces manufacturing complexity and material costs while maintaining effective security coverage at critical locations.
Data Source
AI summary
This present invention is directed towards a security paper (10) comprising a first layer (11) of fibrous substrate and a second layer (12) of fibrous substrate overlying the first layer (11). The first layer (11) provides a first surface (13) of the security paper (10) and the second layer (12) provides a second surface (14) of the security paper (10). The first layer (11) has at least one aperture (16) therethrough such that the second layer (12) is not overlaid by the fibrous substrate of the first layer (11) at the at least one aperture (16). A security additive (17) is located within a predetermined region at least partially surrounding the at least one aperture (16). The disclosure further provides a method of manufacturing the security paper (10) and security documents comprising the security paper (10).