Laserable Security Product Layer for Integrated Braille Personalization
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Solution Overview
Problem
Existing methods for incorporating Braille on valuable or security documents require multiple steps and are inefficient, lacking a streamlined process for integrating both tactile and optical personalization.
Innovation Solution
A method involving a laser-compatible film layer with a partially opaque cover layer, allowing for simultaneous optical and tactile personalization by using a low- and high-intensity laser beam to create Braille characters within a multi-layered structure, ensuring better adhesion and security against counterfeiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Braille is applied superficially by embossing or printing on card bodies, then the production process is simple, but the Braille characters have poor bond stability and can be easily removed
Solution Approach 1:
The patent embeds the laserable film layer containing Braille characters within the multi-layer structure of the valuable or security product, nesting the Braille information between core layers and printing layers. This integration ensures the Braille characters become an inherent part of the product structure rather than a superficial addition, significantly improving bond stability and resistance to removal while maintaining production efficiency through laser processing.
2Ease of manufacture
If separate steps are used for applying Braille fonts and other personalizations, then each step can be optimized independently, but the production effort and complexity increase
Solution Approach 1:
The patent combines multiple personalization functions into a single laser processing step. The laserable film layer is designed to respond to laser beams by forming both tactile Braille characters and optical personalization elements simultaneously. This merging of functions reduces the number of production steps, lowers equipment complexity, and maintains the ability to optimize each personalization type through laser parameter control.
3Productivity
If a single laser step is used for both tactile and visual personalization, then production efficiency increases, but the precision of each function may be compromised
Solution Approach 1:
The laserable film layer is designed with spatially varying properties to enable different responses to laser processing in different regions. The film composition, thickness, or optical properties are locally optimized to produce tactile Braille dots in certain areas while creating visual personalization elements in other areas. This local quality differentiation allows a single laser step to achieve both functions with high precision.
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
Simplifies the manufacturing process by integrating personalized Braille and other optical information in a single step, enhancing security through visible discoloration upon removal and reducing the risk of counterfeiting.
Implementation Method 1
introducing person-specific and/or product-specific tactile non-detectable information into the laserable film layer with a low intensity laser beam
Implementation Method 2
forming person-specific and/or product-specific information in the form of at least one tactile Braille character with a high intensity laser beam which is higher than the low intensity
Data Source
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AI summary
The invention relates to a method for manufacturing a valuable or security product (100), comprising the steps of: - providing a core layer (102) of the valuable or security product (100), - applying at least one laser-compatible film layer (106) to the core layer (102) or to one or more polymer layers (104) applied to the core layer (102), - introducing person-specific and/or product-specific non-tactile information (108) into the laser-compatible film layer (106) using a low-intensity laser beam, and - creating person-specific and/or product-specific information in the form of at least one tactilely detectable Braille character (110) using a high-intensity laser beam, which is higher than the low intensity. The invention also relates to a valuable or security product (100).