Fiber-Based Packaging Forming with Variable Wall Thickness
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Solution Overview
Problem
Existing packaging technologies, particularly those using fiber-based materials, face limitations in formability and design freedom due to their lower elastic limits, restricting the formation of deep cavities and wall angles, which hampers the production of packaging with greater deformation capabilities.
Innovation Solution
A method and device for producing packaging that involves forming a first packaging element with a fiber-based material using a forming station, followed by joining it with a second element to create receiving cavities, allowing for greater deformation and stability through multi-stage forming processes, and utilizing a device with forming and joining stations to reshape the packaging elements for enhanced cavity formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fiber-based packaging material is used, then recyclability is improved, but formability and design freedom deteriorate due to lower elastic limits
Solution Approach 1:
The packaging element is divided into multiple sections with different wall thicknesses. The base area has a greater wall thickness than the wall areas, allowing the thicker base to provide structural support and the thinner walls to enable greater deformation and formability during cavity formation.
Solution Approach 2:
The wall thickness of the packaging element is varied as a parameter, with the base area having a greater wall thickness than the wall areas. This parameter change optimizes both the structural integrity needed for recyclability and the formability required for deep cavity formation.
2Reliability
If fiber-based packaging material is used, then environmental friendliness is improved, but cavity height and deformation capability deteriorate
Solution Approach 1:
The packaging element is segmented into base and wall areas with different thickness characteristics, enabling the structure to achieve greater cavity heights without compromising the integrity of the fiber-based material.
Solution Approach 2:
By changing the wall thickness parameter across different regions of the packaging element, the design achieves enhanced deformation capability and cavity height while maintaining environmental friendliness through fiber-based materials.
3Ease of manufacture
If uniform wall thickness is used, then manufacturing simplicity is improved, but deformation capability and cavity formation deteriorate
Solution Approach 1:
The packaging element is divided into base area and wall areas with different wall thicknesses. This segmentation enables greater deformation capability during cavity formation while remaining compatible with standard deep-drawing processes.
Solution Approach 2:
The wall thickness parameter is changed across different regions of the packaging element, with the base area having greater thickness than the wall areas, optimizing both deformation capability and manufacturing feasibility.
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 production of packaging with larger cavity heights and more flexible designs, improving stability and formability while reducing the need for relief cuts, allowing for greater degrees of deformation and adaptability to packaged goods.
Implementation Method 1
the at least one first formation is reshaped by a first joining tool and wherein the first joining tool is applied to the at least one first formation (4) and the first packaging element is then pressed against the second packaging element using the first joining tool
Implementation Method 2
the first packaging element is then pressed against the second packaging element using the first joining tool
Data Source
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AI summary
A method for producing packaging (1) for a packaged item (2), comprising at least the following steps: a) providing a first packaging element (3) which consists at least partially of a fiber-based packaging material; b) producing at least one first forming (4) with a first opening cross-section (5) in the first packaging element (3); and c) joining the first packaging element (3) with a second packaging element (6) such that the at least one first forming (4) at least partially forms at least one receiving cavity (7) for the packaged item (2) and the first opening cross-section (5) is changed to a second opening cross-section (8). Furthermore, a device (22) for producing such packaging (1) is proposed.