Adhesion Promoter Layer for Individualized Security Features
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Solution Overview
Problem
Existing methods for producing security features in value and security products, such as documents and elements, are not suitable for individualization and fail to enhance security against counterfeiting and falsification effectively, lacking precision and cost-effectiveness.
Innovation Solution
A method involving a substrate with adhesion promoter layers applied in specific patterns to create detachable and inseparable connections for application elements, allowing for the creation of high-resolution, individualizing security features through controlled mechanical removal and structuring of foils, enhancing the security and authenticity of products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional security features are used in value and security products, then the products can be produced with standardized formats and basic security, but the products lack individualization and high-level protection against counterfeiting and falsification
Solution Approach 1:
The security feature is segmented into a modular structure consisting of a substrate, application element, and adhesion promoter layer. This segmentation allows individual customization of each component while maintaining standardized production processes, enabling both high security and ease of manufacture.
Solution Approach 2:
The adhesion promoter layer is applied in advance to specific areas of the substrate before the application element is attached. This preliminary action creates predetermined attachment zones that enable precise individualization of security features while using standardized, automated application processes.
2Reliability
If high-resolution individualizing structures are produced, then the security features become more secure against counterfeiting, but the manufacturing precision requirements increase and production becomes more complex
Solution Approach 1:
The adhesion promoter layer acts as an intermediary between the substrate and application element, enabling high-resolution pattern transfer. The layer's controlled adhesion properties allow precise positioning and attachment of fine detailed structures without requiring excessively tight tolerances in the manufacturing process.
Solution Approach 2:
The adhesion strength of the adhesion promoter layer is controlled by changing its chemical or physical parameters (such as curing degree, composition, or thickness) in different areas. This parameter control enables high-resolution patterning through controlled attachment and removal processes, reducing the overall manufacturing precision requirements.
3Strength
If application elements are permanently connected across the entire surface, then the security features are durable, but the ability to create individualizing patterns through mechanical removal is lost
Solution Approach 1:
The adhesion promoter layer is applied with local quality variations, creating areas of different adhesion strength in different locations on the substrate. This allows the application element to be permanently attached in some areas while remaining removable in others, enabling both durability and pattern creation flexibility.
Solution Approach 2:
The attachment area is segmented into zones with different adhesion characteristics. Some zones provide strong permanent attachment for durability, while other zones allow controlled removal for pattern creation. This segmentation resolves the contradiction between strength and adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables the production of highly secure, individualized security features with improved precision and reproducibility, enhancing the security of value and security products by creating sharp contrasts and high-resolution patterns, making them more resistant to counterfeiting and falsification.
Implementation Method 1
one layer of an adhesion promoter is formed on one of the surfaces of the substrate and/or on the back of the at least one application element
Data Source
AI summary
A method is created for the selective and precise personalization of an application element (210) designed as a transfer element with which method the personalized security feature (200) for a value product and/or a security product (100) can be produced. The method comprises the following method steps: (a) provision of a substrate (105) having surfaces (101), (b) provision of at least one application element having a front side (211) and a rear side (212), (c) generation of a coating of an adhesive agent (220) on one of the substrate surfaces and/or on the reverse side of the at least one application element, (d) application of an application element with its reverse side to the substrate surface provided with a coat of adhesive agent (220) or application of an application element with its reverse side having the adhesive agent (220) onto the substrate surface, (e) inseparable bonding of the application element concerned with the substrate surface exclusively in at least one of at least one adhesion region (230) bounded by at least one free region (240) and (f) mechanical removal from the substrate surface of the parts of said application element located in the at least one free region and not inseparably bonded while parts of said application element located in the at least one adhesion region remain inseparably bonded to the substrate surface. Said application element has regularly arranged thin regions (250) so that parts of said application element located in the at least one free region separate in the thin regions from the parts of said application element located in the at least one adhesion region on mechanical removal from the substrate surface.