3D Wrinkle Rendering for Flexible Packaging
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Solution Overview
Problem
Current methods for simulating flexible packaging in 3D visualization fail to produce realistic wrinkle models, as they do not adequately account for the elastic properties of materials like paper and foil, resulting in unrealistic renderings.
Innovation Solution
A method involving discretizing the packaging surface into a triangular mesh, modeling its physics, running a simulation to find a stable end-state, and modifying the mesh to visually smooth it, while using shading techniques that respect the material's properties such as high stretch and shear resistance and low bending resistance, to achieve a realistic rendering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If general purpose modeling tools are used to create 3D visualization of packaging, then the visualization can be generated, but the rendering is not sufficiently realistic for design purposes
Solution Approach 1:
The patent applies parameter changes by modifying the mesh structure to account for material-specific elastic properties. Different material types (paper, foil, plastic) are modeled with distinct elastic parameters including stretch resistance, shear resistance, and bending resistance. This allows the simulation to generate realistic wrinkle patterns specific to each material type, significantly improving rendering realism while maintaining a systematic modeling approach.
Solution Approach 2:
The patent segments the packaging surface into a triangular mesh structure, where each triangle represents a small element of the material. This segmentation allows independent calculation of elastic deformations for each mesh element based on local stress conditions and material properties. The discrete triangular elements can be individually adjusted to capture complex wrinkle geometries, enabling realistic rendering of flexible packaging under various loading conditions.
2Manufacturing precision
If elastic properties of flexible packaging materials are accurately modeled, then realistic wrinkle patterns are achieved, but computational complexity increases
Solution Approach 1:
The patent implements partial action by applying elastic deformation calculations only to regions of the mesh that are under stress or likely to wrinkle. Rather than computing full elastic responses for the entire packaging surface, the simulation focuses computational effort on areas where wrinkles are expected to form, such as near folds, seals, and regions with concentrated loads. This selective approach maintains accuracy in critical areas while reducing overall computational complexity.
3Measurement precision
If high resolution mesh is used to capture wrinkle details, then visualization quality improves, but processing time increases
Solution Approach 1:
The patent applies local quality by using non-uniform mesh density across the packaging surface. Regions expected to exhibit complex wrinkle patterns, such as near fold lines, seals, and areas with high stress concentration, are represented by finer mesh elements with smaller dimensions. In contrast, regions with smooth surfaces and minimal deformation are represented by coarser mesh elements. This localized refinement captures wrinkle details where needed while maintaining coarser resolution elsewhere, optimizing the balance between visualization quality and processing time.
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 method effectively generates realistic 3D models of wrinkly flexible packaging, providing a more accurate visualization of packaging materials by simulating their elastic properties and resulting in a more realistic representation of wrinkles.
Implementation Method 1
modeling the physics of the mesh, and running a simulation to find a stable end-state for the mesh... respecting the material's properties such as high stretch and shear resistance and low bending resistance
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
A method, and apparatus, and a computer-readable medium encoded with instructions to carry out a method. The method is of rendering a model of a surface of wrinkly material such as paper or foil, e.g., a model of packaging on a display device. The method includes accepting a description of the different parts of the surface of the packaging, and how and where any of the parts are connected, discretizing to form a mesh, modelling the physics of the mesh, running a simulation to find a stable end-state for the mesh, modifying the mesh to visually smooth the mesh in a way that is perceived as typical for flexible packaging material; and rendering the model on a display device. The modifying the mesh is to visually smooth the mesh includes modifying during the rendering or modifying prior to the rendering.