High Security Film Print Transfer for Banknote Insertion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current security threads in paper currency can be easily counterfeited due to lack of advanced security features and precise placement capabilities, leading to increased costs and reduced paper yields, as they are limited to machine direction insertion and require complex, time-consuming demetallization processes.
Innovation Solution
A high security film with multiple security features is produced using a print transfer method involving a donor web with various layers, including a plastic film, release coat, dye coat, and metallic coat, where indicia and security elements are printed and laminated onto a receiver web, allowing for precise registration and insertion into paper during the paper making process without the need for new machinery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security threads are used with simple insertion methods, then manufacturing is easier, but security against counterfeiting is reduced
Solution Approach 1:
Security features are pre-formed on the film before insertion into the paper currency. The film is manufactured with embedded security elements, precise patterns, and metallic layers already in place, allowing complex security features to be prepared in advance rather than requiring complex real-time insertion machinery.
Solution Approach 2:
The invention creates a film that replicates the appearance and security features of traditional threads but with enhanced security characteristics. The film copies the functional aspects of security threads while incorporating multiple security layers that are difficult to counterfeit.
2Reliability
If complex demetallization processes are used to remove metal from security threads, then security features are enhanced, but production time increases
Solution Approach 1:
The invention extracts the metallic security features from the complex demetallization process by using a metallic-coated film that retains its metallic layers. The metal is applied in a controlled manner during film manufacturing rather than requiring removal afterward, eliminating the time-consuming demetallization step while preserving security features.
3Ease of manufacture
If security threads are inserted only in machine direction, then insertion process is simpler, but placement versatility is reduced
Solution Approach 1:
The film is designed with flexible properties that allow it to be inserted in various directions (cross-machine direction, machine direction, diagonal) and configured in different shapes (round, oval, rectangular, irregular). The film's flexibility enables dynamic adaptation to different insertion requirements without compromising the simplicity of the insertion process.
4Reliability
If multiple security features are added to enhance security, then counterfeiting resistance improves, but manufacturing complexity increases
Solution Approach 1:
Multiple security features are combined into a single integrated film structure. The film incorporates metallic coatings, security patterns, embedded elements, and multiple layers all in one manufacturing process, rather than requiring separate processes for each security feature. This merging reduces overall manufacturing complexity while maintaining high security.
Solution Approach 2:
The film uses composite material structures combining different layers and materials (metallic coatings, polymer films, security inks, embedded elements) to achieve multiple security functions simultaneously. The composite structure provides enhanced counterfeiting resistance while being manufactured as an integrated product.
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 solution enhances security by enabling precise placement and complex patterns of security features, reducing the risk of counterfeiting and costs, while maintaining paper production efficiency by allowing insertion in various directions and shapes, thus improving the security and yield of paper products.
Implementation Method 1
uses a liquid droplet containing thermosetting or ultraviolet curing adhesive material to fix a transfer material on an image receiving member
Implementation Method 2
applying adhesive in a pattern to a foil using a drop on demand deposition head
Data Source
Figure 1~1A
Figure 2~2A
Figure 3
AI summary
The invention relates to a high security film, optionally in the form of a slit thread or a micro tape, which is then inserted into high security paper such as a bank note paper and the like during the paper making process. The invention envisages a novel method of producing such a high security film using a print transfer method, wherein one or more security features are incorporated on one or more indicia including letters, optionally graphics, during such a production process, using multiple printing stations and lamination.