Polygonal Container Sidewall Alignment for Full Nesting
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Solution Overview
Problem
Thin-walled disposable plastic containers are prone to bending, distortion, and instability due to their thin walls, and they often fail to nest properly when stacked, leading to increased space usage and potential instability.
Innovation Solution
The container features a polygonal sidewall with a frustoconical shape and a rotational alignment structure that includes protruding or recessed elements, such as ribs, fingers, or indentions, to enhance structural integrity and facilitate full nesting by aligning adjacent containers during stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If thicker material construction is used to strengthen containers, then container strength is improved, but production costs increase
Solution Approach 1:
The container sidewall is divided into multiple frustoconical panels that are joined at seams. This segmentation creates a structured framework that distributes mechanical loads across multiple elements, providing enhanced strength without requiring increased material thickness throughout the entire container wall.
Solution Approach 2:
The container employs a composite structure combining thin-walled frustoconical panels with reinforcing seams and rigidity-enhancing features at panel intersections. This composite approach allows the thin walls to maintain structural integrity through geometric reinforcement rather than material thickness increases.
2Volume of stationary object
If containers are stacked for shipment and storage, then space efficiency is improved, but containers may not fully nest and become unstable
Solution Approach 1:
The container design enables full nesting of stacked containers through specifically configured frustoconical panels and complementary geometric features. The panels are shaped and positioned to allow inner containers to nest completely within outer containers, maximizing space efficiency while maintaining stack stability through precise geometric matching.
Solution Approach 2:
The frustoconical panel configuration introduces asymmetric geometric features that facilitate directional nesting and alignment. The non-uniform panel shapes and intersection angles create complementary interfaces between stacked containers, ensuring proper orientation and stable nesting arrangements.
3Ease of manufacture
If thin-walled construction is used for disposable containers, then production cost is reduced, but containers are subject to bending and collapsing
Solution Approach 1:
By segmenting the sidewall into multiple frustoconical panels, the structure creates inherent geometric reinforcement. The panel seams and intersection points act as structural nodes that resist bending and collapsing forces, allowing thin walls to maintain strength through form rather than material thickness.
Solution Approach 2:
The frustoconical shape of the panels introduces curved geometric forms that inherently resist bending and collapsing. The conical geometry distributes applied loads across the curved surface area, preventing localized buckling and maintaining structural integrity with thin wall construction.
Data Source
AI summary
A container having enhanced wall integrity is provided that includes a sidewall having a polygonal cross-sectional shape and an alignment structure formed therein. The alignment structure is adapted for orienting the container with respect to a second container such that the panel sections of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. Alternatively, the alignment structure can protrude from the sidewall to form peaks and valleys along an inner surface of the container. The peaks include first and second faces sloping in opposite directions designed to direct corners of the first container's sidewall toward the valleys of the second container in order to orient the containers as they are stacked.