Moulded Pulp Egg Packaging Denesting Mechanism
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Solution Overview
Problem
Existing egg packaging units face challenges in high-speed machine handling and stacking due to the need for alternate stacking configurations and inadequate denesting mechanisms, leading to inefficiencies and potential damage during processing.
Innovation Solution
A packaging unit made of moulded pulp with a bottom part and a cover part featuring denesting means near the end surfaces, including abutment surfaces and cam mechanisms, allowing for reliable and efficient denesting without visible modifications, and incorporating design elements that enhance strength and labelling areas while maintaining aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If denesting means are added to improve machine handling and denesting, then productivity and reliability improve, but device complexity increases
Solution Approach 1:
The denesting function is merged into the existing cover part structure by forming abutment surfaces and cam mechanisms as integral parts of the molded pulp cover, rather than adding separate denesting devices. This combining approach enables high-speed automated denesting while avoiding additional complex components.
Solution Approach 2:
The cover part is designed to serve multiple functions: it protects the eggs, provides structural integrity for stacking, and incorporates denesting features through integrated abutment surfaces and cam mechanisms. This multi-functionality improves machine handling without requiring separate dedicated denesting components.
2Stability of the object's composition
If alternate stacking configurations are used to improve stackability, then stacking stability improves, but device complexity and operational complexity increase
Solution Approach 1:
The packaging unit employs asymmetric stacking configurations where odd-numbered and even-numbered stacks are positioned with slight offsets relative to each other. This asymmetric arrangement improves interlocking and stacking stability while the standardized cover part design keeps the overall system complexity manageable.
3Reliability
If visible modifications are made to improve denesting, then denesting reliability improves, but aesthetic appeal and commercial value deteriorate
Solution Approach 1:
The denesting features (abutment surfaces and cam mechanisms) are localized to specific areas of the cover part where they are functionally needed, while the majority of the cover surface maintains its smooth, aesthetically pleasing appearance suitable for commercial packaging and labeling.
Data Source
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AI summary
The invention pertains to a packaging unit (1) for eggs or similar fragile articles, said packaging unit for instance being made of moulded pulp, and comprising a bottom part (2) comprising compartments (4) matching at least partially the outer contours of the articles contained within said unit, a cover part (3) comprising a top surface (7) and substantially planar front- (8) and rear surfaces and substantially planar end surfaces (9,9'), said cover part substantially having a rectangular shape with rounded corners, wherein said cover part comprises denesting means near the end surfaces near the top surface of the cover part. The invention further pertains to such a packaging unit wherein said cover part at its corners comprises portions reflecting the shape of the articles contained within said packaging unit, a portions being formed as a part taken out of a rounded comer and a part of said end surface of said cover part.