Security Paper Embedding Cellulose Support Web
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Solution Overview
Problem
Current security paper manufacturing methods for valuable documents face challenges in preventing counterfeiting, particularly with holograms that can be detached from documents, and existing processes are costly and damaging to paper due to the need for electron radiation curing.
Innovation Solution
A security paper with a cellulose support web embedded in the pulp substrate, incorporating security elements like pigments and fibers, which are integrated using an electromechanical system to ensure the security strip is fully embedded and cannot be easily detached, providing a homogeneous and stable surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If holograms are incorporated using adhesive material, then security elements can be added to documents, but the holograms can be detached by heating the adhesive
Solution Approach 1:
The patent merges the hologram with the document substrate by embedding the holographic security element directly into the paper matrix during the paper manufacturing process, eliminating the need for separate adhesive application and creating an integrated structure that cannot be detached without destroying the document
Solution Approach 2:
The holographic security element is nested within the paper substrate, with the hologram being incorporated into the bulk of the document rather than applied to the surface, making it impossible to remove without compromising the integrity of the entire document
2Reliability
If electron radiation is used to cure the resin, then the hologram can be transferred to the paper, but the process is complex, damaging to paper and involves high costs
Solution Approach 1:
The patent replaces the complex electron radiation curing system with a simpler mechanical embedding process during paper manufacturing, where the holographic element is physically incorporated into the paper matrix through standard papermaking operations without requiring specialized curing equipment
Solution Approach 2:
The holographic security element is incorporated into the paper during the paper manufacturing process itself, before the document is finalized, allowing the embedding to occur as part of the base material creation rather than as a subsequent complex finishing step
3Reliability
If security elements are applied to the surface of the substrate, then authentication features can be added, but the elements can be removed or transferred to counterfeit documents
Solution Approach 1:
The security elements are merged with the substrate by embedding them within the paper matrix during manufacturing, creating an integrated structure where the security features become an intrinsic part of the document rather than a separate applied layer that can be removed or transferred
Data Source
AI summary
The invention relates to a security strip and security paper for obtaining security documents such as legal tender notes, checks or identification documents, comprising a cellulose support web that is completely embedded in a pulp substrate. As both the substrate and the support web are formed by plant fibers, a series of physical and chemical bonds are established between the fibers of both elements, the support web thus being perfectly integrated in the pulp. The cellulose support web will sometimes have a series of security elements, such as pigments, synthetic elements and/or security fibers of the type normally used in this type of application.