Chiral Liquid Crystal Polymer Marking for Anti-Counterfeiting
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Solution Overview
Problem
Current methods for protecting products from counterfeiting, such as those using chiral liquid crystal polymers, are vulnerable to sophisticated replication techniques due to limited chemical and coding permutations, necessitating a more advanced system that is easy to apply, detect, and decode while being difficult to replicate.
Innovation Solution
A process involving the application of a chiral liquid crystal precursor composition on a substrate, followed by heating and modification with a modifying composition to create a liquid crystal polymer marking with unique optical properties, allowing for multiple coding levels that are challenging to replicate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional marking methods are used, then application and detection are simple, but the system is vulnerable to replication due to limited coding permutations
Solution Approach 1:
The marking system is segmented into multiple independent coding layers: base marking layer, overprinted image layer, and chiral liquid crystal polymer layer. Each layer contributes to the overall code, creating numerous permutations through their combination rather than relying on a single complex code structure.
Solution Approach 2:
The invention uses composite material structure combining conventional marking materials with chiral liquid crystal polymer materials. The chiral LCP layer adds optical properties and additional coding capability, creating a multi-layer composite marking system that increases versatility while maintaining manageable complexity.
2Reliability
If multiple coding layers are added to prevent counterfeiting, then security is improved, but the ease of application and detection deteriorates
Solution Approach 1:
The chiral liquid crystal polymer layer is applied over the existing marking and overprinted image, merging multiple coding elements into a single integrated marking system. This consolidation maintains security through multiple coding layers while simplifying application to a single sequential process and detection to a unified authentication procedure.
3Reliability
If sophisticated marking systems are implemented, then replication difficulty increases, but production cost and authentication complexity increase
Solution Approach 1:
The system uses chiral liquid crystal polymer materials that can be applied using conventional printing and coating techniques, effectively copying existing manufacturing processes. This allows sophisticated multi-layer coding to be produced using standard production equipment, maintaining ease of manufacture while increasing counterfeit resistance through the added optical and coding complexity.
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
The resulting liquid crystal polymer marking provides enhanced security against counterfeiting by offering numerous coding permutations, easy application and detection, and robust authentication capabilities.
Implementation Method 1
heating the applied composition to bring same to a first chiral liquid crystal state
Implementation Method 2
a chiral liquid crystal precursor composition... first chiral liquid crystal state... second chiral liquid crystal state
Implementation Method 3
applying to one or more areas of the applied composition at least one of: (1) at least one modifying composition which modifies the first chiral liquid crystal state locally in the one or more areas
Implementation Method 4
The layer or film comprises in at least one area (region) thereof a liquid crystal polymer that has at least one optical property which is different from an optical property of the remainder of the layer or film
Data Source
Figure 1~2
AI summary
A liquid crystal polymer marking is obtainable by a process that comprises applying a chiral liquid crystal precursor composition onto a substrate, heating the composition to a chiral liquid crystal state, applying to at least one area of the precursor composition a modifying composition, if necessary, heating the at least one area to bring same to a modified liquid crystal state, and subsequently curing and/or polymerizing the resultant product.