Surface Structuring via Explosive Embossing and Pre-Structure Superposition
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Solution Overview
Problem
Existing surface structuring methods, such as explosive embossing, face limitations in producing complex and reproducible surface structures, particularly for forgery-proof applications, due to issues like deformation, imaging quality, and complexity in mold structure layers.
Innovation Solution
The method involves pre-stratifying the solid surface with a preliminary structure and applying an explosive or mold structure layer to create a superimposed surface structure, reducing the number of layers and complexity, allowing for more degrees of freedom in surface design and achieving higher precision and security against plagiarism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple layers (structured surface + intermediate layer) are used in explosive embossing, then imaging quality and structure definition are improved, but device complexity and process steps increase
Solution Approach 1:
The patent combines the intermediate layer and structured surface into a single integrated layer that performs both functions: providing structural definition and controlling the explosive embossing process. This merging eliminates the need for separate intermediate layers while maintaining imaging quality.
Solution Approach 2:
The structured surface layer is designed to serve multiple functions simultaneously: it acts as the template for the desired surface structure, controls the explosive pressure distribution, and defines the imaging quality. This multi-functionality reduces the overall system complexity by eliminating dedicated intermediate layers.
2Manufacturing precision
If high detonation pressure is used to achieve high imaging quality, then manufacturing precision improves, but the solid body suffers from excessive deformation
Solution Approach 1:
The structured surface layer is designed with varying local properties - denser regions where high pressure is needed for imaging quality, and more compliant regions where pressure needs to be distributed to avoid deformation. This local variation in layer properties allows simultaneous achievement of high imaging quality and controlled deformation.
Solution Approach 2:
The structured surface layer acts as a pre-designed cushioning structure that distributes and controls the explosive pressure before it reaches the solid body. The layer's structure is optimized in advance to provide the right balance between transmitting enough pressure for imaging and cushioning to prevent excessive deformation.
3Object-affected harmful factors
If intermediate layers are used to dampen detonation pressure, then harmful effects on the solid body are reduced, but imaging quality and structure definition deteriorate
Solution Approach 1:
The patent merges the damping function into the structured surface layer itself, eliminating the need for separate intermediate layers. The structured layer is designed with properties that provide both the structural definition for imaging and the pressure distribution characteristics for damping, achieving both goals simultaneously.
4Manufacturing precision
If complex mold structures are used to achieve high surface structure complexity, then manufacturing precision improves, but device complexity and cost increase
Solution Approach 1:
Instead of creating complex physical mold structures, the patent uses the structured surface layer as a template that is copied onto the solid body through the explosive embossing process. This copying approach allows complex surface structures to be achieved without the corresponding complexity in physical mold structures, reducing device complexity and cost.
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 approach enables the cost-effective production of complex, reproducible surface structures with enhanced security features, reducing deformation risks and improving imaging quality, while offering flexible arrangement options for unique and secure surface patterns.
Implementation Method 1
the structure of this structured surface is mapped onto the surface of the solid by an explosive structure layer having the structured surface is arranged on the surface of the solid and the structure of the explosive structure layer is blasted into the surface of the solid by detonating it
Implementation Method 2
a relatively high detonation pressure with a steep pressure increase develops during the conversion of the explosive
Data Source
AI summary
A method for applying a surface structure to a solid is proposed, wherein a structured surface is applied to the surface of the solid and the structure of this structured surface is mapped onto the surface of the solid by: - arranging an explosive structure layer having the structured surface on the surface of the solid and blasting the structure of the explosive structure layer into the surface of the solid by detonating it; and/or - arranging at least one mold structure layer having the structured surface on the surface of the solid and blasting the structure of the mold structure layer into the surface of the solid by detonating a separate explosive layer. According to the invention, the surface of the solid is itself provided with a surface prestructure before blasting, wherein the structure of the explosive structure layer or the mold structure layer is defined by the structure of the solid surface.the form-structure layer is applied to at least a sub-area of the surface pre-structure, so that the generated surface structure results from a superposition of the surface pre-structure with the blasted structure.