Packaging for Circulating Lug Element with Offset Tear Edge
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Solution Overview
Problem
Existing packaging solutions for cylindrical items, such as rolls of plaster, face challenges in providing adequate protection against theft and sufficient space for printing, while also being cost-effective and easy to open, due to issues with plastic blister packs and material stress in flat cardboard designs.
Innovation Solution
The packaging design features a holding section and tear-off edge that run offset and parallel to the packaging plane, with an inclined connecting section to minimize material stress and allow easy access for opening, using a one-piece cardboard design with perforation lines and gripping tabs to enhance stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the second surface element lies flat against the first surface element to reduce material stress, then the element can be securely fastened, but the tear edge runs in the packaging plane making it difficult for users to reach and open
Solution Approach 1:
The holding section is extended in the direction perpendicular to the packaging plane, creating a three-dimensional structure that allows the tear edge to be accessible from the rear while maintaining secure fastening at the front. This dimensional extension resolves the contradiction by providing both secure attachment and easy opening functionality.
2Area of stationary object
If the projection has small dimensions in the packaging plane to reduce packaging size, then the packaging is more compact, but the element cannot be securely attached without excessive material stress
Solution Approach 1:
The holding section extends perpendicular to the packaging plane, utilizing the third dimension to provide secure attachment for small projections without requiring large planar dimensions. This allows compact packaging while maintaining secure fastening through the extended holding structure.
3Device complexity
If the holding section and tear edge run in the packaging plane, then the packaging structure is simple, but the tear edge is inaccessible and difficult to grasp for opening
Solution Approach 1:
The holding section is extended in the perpendicular direction to create an accessible tear edge that protrudes from the packaging plane, allowing users to easily grasp and open the packaging while maintaining relatively simple overall structure.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The package (3) has a projection enclosed around an element e.g. plaster roller, and a surface element (1) with an opening. Another surface element is formed as one-piece and has a holding section partly extending over the opening, where the holding section has a tearing edge (11). The surface element has connecting sections (18, 19) that connect attachment sections (8, 9) of the element (1) and the holding section with each other. The sections (18, 19) run bendingly to the plane and the holding section, and the edge runs parallel to the plane and the element (1).