Flexible Packaging Graphic Pre-distortion via 3D Mapping
Solution Overview
Problem
The challenge in designing flexible packaging, such as shrink packaging, lies in accurately predicting and compensating for graphic distortions that occur during the shrinking process, which is labor-intensive and prone to errors, lacking effective tools for pre-distortion and visualization of the final 3D shape.
Innovation Solution
A method and apparatus that utilize a 3D model of the packaging and the shrinking process to map 2D graphics onto the 3D surface, providing tools for pre-distortion and visualization of the final shape, enabling accurate placement and compensation for distortions, thereby improving the design and printing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual trial and error pre-distortion is used to compensate for graphic distortions during shrinking, then graphic accuracy on the final 3D packaging is improved, but labor time and processing cost increase significantly
Solution Approach 1:
The system performs pre-distortion of graphics automatically before printing, using a 3D model of the packaging and simulation of the shrinking process to calculate the necessary distortion compensation. This preliminary action eliminates the need for manual trial-and-error adjustments during production, directly resolving the contradiction by achieving high graphic accuracy while reducing labor time.
Solution Approach 2:
The patent replaces the manual mechanical process of trial-and-error pre-distortion with an automated computer-based system that uses 3D modeling and simulation to calculate and apply the necessary graphic distortions. This substitution of manual mechanics with automated computational methods achieves both high precision and efficiency.
2Manufacturing precision
If physical prototypes are created to visualize the final 3D packaging shape, then design accuracy and client approval are improved, but production cost and time increase
Solution Approach 1:
The system creates a virtual 3D model of the packaging with the distorted graphics rendered on its surface, providing an accurate visual representation of the final product. This virtual copy replaces the need for physical prototypes, achieving the same design verification purpose without consuming physical materials, thereby resolving the contradiction between design accuracy and material cost.
3Manufacturing precision
If complex multi-step pre-distortion processing is performed manually, then graphic distortion compensation is improved, but device complexity and error potential increase
Solution Approach 1:
The patent combines multiple separate operations (3D modeling, shrinking simulation, distortion calculation, and graphic application) into an integrated computer-based system. This merging of previously separate manual steps into a unified automated process maintains high distortion compensation accuracy while reducing process complexity and eliminating human error potential.
Data Source
AI summary
A method to aid designing flexible packaging for wrapping around a solid object and finalizing the packaging. The method includes accepting a description of the surface of a sheet of packaging material after wrapping around the solid object and finalizing, using a mapping of points in the 2D plane of the sheet of the packaging material to the corresponding points in the 3D surface of the wrapped and finalized packaging. The method further includes displaying the surface of the wrapped and finalized packaging or displaying graphic elements on the surface of wrapped and finalized packaging. A version includes pre-distorting graphics to correct for any distortions to graphics that occur during the wrapping and finalizing process, and generating press-ready graphics from the pre-distorted graphics for printing onto the surface of the sheet of packaging material.