Shape-Memory Female Embossing Tool for Fast Reconfigurable Reliefs
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Solution Overview
Problem
The existing production methods for male and female embossing tools are costly and inflexible, making them unaffordable for small to medium-sized packaging series, and require long lead times due to custom machining, limiting their use to large production quantities and high-value products.
Innovation Solution
A female embossing tool with an outer layer made of shape-memory material that can be deformed to create complementary recesses for various embossing reliefs, allowing for rapid adaptation to different embossing configurations without the need for new tools, using a method involving a male embossing tool with protuberances to create recesses on the female tool, which can be reused and reconfigured by heat treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If custom-machined male and female embossing tools are produced, then precise shape matching between tools is achieved, but production costs increase and lead times extend
Solution Approach 1:
The invention uses a master male embossing tool to create negative impressions in a deformable layer, which are then transferred to the female tool surface. This copying process achieves precise shape matching without requiring custom machining of both tools, significantly reducing production costs while maintaining embossing precision
Solution Approach 2:
The female tool incorporates a deformable layer whose physical state changes under heat and pressure. By applying thermal energy, the layer becomes pliable to accept the embossed pattern, then solidifies to retain the precise negative impression, enabling accurate shape transfer without custom machining
2Manufacturing precision
If custom-machined embossing tools are produced, then precise embossing relief is achieved, but production lead time increases
Solution Approach 1:
The master male embossing tool is prepared in advance with the desired embossing pattern. This master tool can then be repeatedly used to create impressions in the deformable layer of female tools, eliminating the need to machine each female tool individually and significantly reducing production lead time while maintaining precision
Solution Approach 2:
The embossing pattern is copied from the master tool to multiple female tools through the deformable layer process, enabling rapid production of precise embossing tools without repeated custom machining operations
3Manufacturing precision
If separate male and female embossing tools are produced for different embossing arrangements, then specific embossing patterns are achieved, but tool complexity and production costs increase
Solution Approach 1:
The master male embossing tool serves multiple functions by creating impressions for different embossing patterns in the deformable layer of female tools. A single master tool can produce various female tools with different patterns, eliminating the need for multiple custom-machined tool pairs and enhancing adaptability
Solution Approach 2:
The deformable layer in the female tool allows dynamic adaptation to different embossing patterns. By changing the master tool or the deformation conditions, the same female tool structure can accommodate various embossing arrangements, providing versatility without requiring completely different tool designs
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 solution significantly reduces production costs, allows for flexible production of packaging with various embossing arrangements, and enables precise shape matching between tools, enabling the production of small to medium-sized packaging series with minimal increase in cost compared to large series, and allows for infinite configuration possibilities with a single female embossing tool.
Implementation Method 1
an outer layer made of a material with shape-memory type properties
Implementation Method 2
reusable and reconfigured by heat treatment
Data Source
AI summary
A method for production of a female embossing tool intended for embossing a sheet element: provide a female embossing tool with an outer layer made of a material with shape-memory type properties, and the outer face of the layer has no recesses; provide a male embossing tool with an outer face with at least one protuberance corresponding to at least one desired embossing relief that is to be formed on the sheet element after embossing; and cooperation of the male embossing tool with the female embossing tool such that the outer layer of the female embossing tool undergoes a plastic deformation which creates at least one recess of a shape complementary to the protuberance(s) of the male embossing tool.