Carton End Flap Segmentation for Stacking Strength
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Solution Overview
Problem
Existing cartons lack sufficient reinforcement features, leading to potential crushing when stacked, and are often made from thicker materials to compensate for this weakness, increasing manufacturing costs.
Innovation Solution
The carton design incorporates foldable end flaps with distal portions that act as internal structural members, providing reinforcement and angled corners to enhance strength, allowing for the use of lighter or thinner materials while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If thicker materials are used to compensate for lack of reinforcement, then carton strength is improved, but manufacturing cost increases
Solution Approach 1:
The end flaps are divided into multiple segments including a base portion, intermediate portion, and distal portion. These segmented flaps can be folded along multiple fold lines to create complex three-dimensional reinforcement structures that provide strength without requiring thicker materials throughout the entire carton.
Solution Approach 2:
The end flaps extend beyond the edges of the side panels in the lateral direction, creating reinforcement features that protrude laterally from the carton body. This dimensional extension allows the flaps to provide structural support at critical corners and edges where stacking forces are concentrated, enabling the use of thinner materials for the main carton body.
2Strength
If reinforcement features are added to prevent crushing, then carton strength is improved, but device complexity increases
Solution Approach 1:
The reinforcement function is merged with the existing end-flap closure structure. The same flaps that close the ends of the carton are extended and configured to provide lateral reinforcement, eliminating the need for separate reinforcement components and reducing overall structural complexity while maintaining strength.
Solution Approach 2:
The end flaps serve multiple functions: they close the ends of the carton, provide lateral reinforcement at corners and edges, and create internal structural members when folded. This multi-functionality reduces the need for additional specialized reinforcement components, simplifying the overall device complexity.
3Ease of manufacture
If lighter materials are used to reduce cost, then manufacturing cost is reduced, but carton strength deteriorates
Solution Approach 1:
Thinner or lighter materials are used for the main body panels of the carton, while the end flaps are configured with specific geometries (base portion, intermediate portion, distal portion) that concentrate material at critical reinforcement locations. This local quality variation allows lighter overall weight while maintaining strength where it is most needed during stacking.
Data Source
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AI summary
A carton for holding a plurality of articles. The carton includes at least one top panel, a first side panel, a second side panel, and a bottom panel. A plurality of end flaps is foldably connected to a respective panel to close an end of the carton. The carton includes reinforcement features at the end of the carton to increase the strength of the carton.