3D Security Element Micro-Lens Array Injection Molding
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Solution Overview
Problem
Current security technologies struggle to effectively distinguish genuine from forged products, especially with the rise of sophisticated forging techniques, and are limited in application to paper media, necessitating a more robust and versatile forgery prevention method.
Innovation Solution
A three-dimensional security element is created using a micro-pattern fabrication process involving a metallic circular plate, micro-lens array, and image array, integrated with an injection-molded product through an in-mold injection process, featuring a primer layer and protective film to enhance security and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional security technologies are used, then forgery prevention is attempted, but the technologies are limited to paper media and effectiveness deteriorates due to highly precise forging techniques
Solution Approach 1:
The patent transitions security elements from two-dimensional paper media to three-dimensional injection-molded products by changing the dimensional parameter. The security element is integrated into the molded product itself, expanding application scope while maintaining forgery prevention effectiveness through complex 3D micro-lens array structures that are difficult to replicate
Solution Approach 2:
The patent combines multiple functional layers (micro-lens array, image array, reflective layer, protective layer) into a composite security element structure. This composite approach enhances forgery prevention effectiveness while the integration with injection-molded materials expands versatility to plastic products
2Reliability
If enterprise-level security technology is developed, then forgery prevention capability is improved, but research costs and equipment costs increase
Solution Approach 1:
The security element is integrated directly into the injection-molded product during the manufacturing process itself. The mold includes the security element as an integral part, eliminating the need for separate security technology equipment and reducing research and implementation costs while maintaining high security levels
Solution Approach 2:
The patent merges the security element with the product manufacturing process by integrating it into the injection mold. This combination eliminates separate security verification equipment needs and reduces overall system cost while maintaining enterprise-level security effectiveness
3Reliability
If a three-dimensional security element with micro patterns is created, then forgery prevention capability and ease of identification are improved, but manufacturing process complexity increases
Solution Approach 1:
The security element with complex micro patterns is pre-formed and integrated into the injection mold before product manufacturing. This preliminary preparation allows the complex three-dimensional structure to be created once in the mold, simplifying the actual production process while maintaining high security and identification capability
Solution Approach 2:
The patent uses injection molding technology to create complex three-dimensional micro patterns that would be difficult to achieve with traditional mechanical fabrication methods. This substitution simplifies the manufacturing process while enabling sophisticated security element structures
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 provides an effective forgery prevention mechanism with high security, ease of identification, and flexibility in design, offering a three-dimensional effect and texture, reducing system costs, and enabling easy verification without specialized equipment.
Implementation Method 1
exposing micro patterns of an image array and a micro-lens array to a laser or electron beam on a glass plate onto which a photoresist has been applied
Implementation Method 2
configured such that a plurality of lenses in a refractive, diffractive and GRIN (Gradient Index) form are arranged in a 2D array
Implementation Method 3
configured such that a plurality of lenses in a refractive, diffractive and GRIN (Gradient Index) form are arranged in a 2D array
Implementation Method 4
filling a surface on which the image array has been formed with ink or vacuum-depositing ink on the surface
Data Source
AI summary
A method for producing a three-dimensional security element and an injection-molded product having the three-dimensional security element and, more specifically, to a method for producing a three-dimensional security element suitable for an in-mold process by using a moiré expansion phenomenon, and for producing an injection-molded product to which the three-dimensional security element is applied. The present invention according to one embodiment comprises a three-dimensional security element and an injection-molded product having the three-dimensional security element, wherein the three-dimensional security element further comprises: a micro lens array to which various types of lenses can be applied; an image array; a primer layer for facilitating adhesion; and a projection film for protecting the three-dimensional security element from heat and pressure. According to the configuration above, three-dimensional effects can be implemented, such as a latent image effect, a floating effect, and an inverted parallax effect, wherein an effect is determined by a period rate and a matching angle between the micro lens array and the image array.