Pouring Element Receiving Areas for Packaging Joint Integrity
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Solution Overview
Problem
Existing composite packaging technologies face challenges in creating a secure and leak-proof connection between the pouring element and the packaging jacket, particularly in the corner areas where high stresses lead to material failure and leaks, due to the demands of thermal and mechanical loads during the forming process.
Innovation Solution
The design incorporates receiving areas with rounded surfaces or chamfers at the surface abutments to accommodate the fold line of the packaging casing ears, providing space for deformation and reducing compression, along with material ribs and wing-like attachments to enhance tightness and structural strength, and a truncated pyramid flange for optimal fold angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the packaging jacket is thermally activated and mechanically folded to create ears and seal to the gable surfaces, then a secure connection is achieved, but high stresses in corner areas cause material failure and leaks
Solution Approach 1:
The patent applies beforehand cushioning by creating receiving areas with increased material thickness at the corner areas of the gable surfaces before the thermal and mechanical forming process. These receiving areas, formed by counteracting forces during molding, provide a material reservoir that absorbs the high stresses during ear folding and sealing, preventing material failure and leaks while ensuring secure connection.
2Ease of manufacture
If the flange is designed as a truncated pyramid with converging connecting surfaces, then optimal fold angles are achieved, but corner areas experience high compression and stretching stresses
Solution Approach 1:
The patent applies local quality by differentiating the material structure at corner areas from the rest of the gable surfaces. The receiving areas at the corners have increased material thickness and are pre-formed with counteracting forces, providing localized reinforcement where high stresses occur during the truncated pyramid folding process, while maintaining the optimal fold angles required for ease of manufacture.
3Shape
If the gable area is formed into a truncated pyramid shape, then the packaging structure is optimized, but the thermal and mechanical loads during forming place high demands on material strength
Solution Approach 1:
The patent applies beforehand cushioning by pre-forming receiving areas with increased material thickness at the corner areas during the molding process. These receiving areas are created using counteracting forces that build up material reserves before the thermal and mechanical forming of the truncated pyramid gable area, enabling the structure to withstand the high loads during forming without material failure.
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 design significantly reduces material stress and the risk of leaks by allowing for even energy input and deformation, ensuring a secure and gas-tight connection between the pouring element and the packaging jacket, while also being easier to manufacture and maintain.
Implementation Method 1
the plastic on the flange and on the packaging casing section is locally melted
Data Source
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AI summary
Shown and described are a pouring element for a packaging, in particular a composite packaging for liquid foods with a polyhedral gable area (6) and folded packaging jacket ears (7), with a base body (1), a polyhedral flange (4) intended for connection with a packaging jacket, the connecting surfaces (9) of which meet at surface abutments (10), as well as a composite packaging for liquid foods with a polyhedral gable area (6) and folded packaging jacket ears (7), in which the packaging jacket is correspondingly connected to the pouring element, and a composite packaging for liquid foods with such a pouring element.In order to keep the packaging undamaged and thus airtight during the connection process between the pouring element and the packaging jacket and during the folding of the packaging jacket ears (7), it is provided that receiving areas (14) for the folding line (8) of the packaging jacket ears (7) are formed in the area of the surface abutments (10).