Polygonal Container Sidewall with Alignment Ribs 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 frustoconical sidewall with 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 cost increases
Solution Approach 1:
The container sidewall is divided into multiple panel sections separated by annular ribs. This segmentation creates a structured framework that distributes mechanical loads across multiple elements, enhancing overall strength without requiring uniform thickening of the entire container wall.
Solution Approach 2:
The annular ribs provide localized reinforcement at specific circumferential positions where structural support is most needed. This allows the container to achieve enhanced strength at critical locations while maintaining thin wall construction in other areas, optimizing material usage.
2Strength
If annular ribs are provided in the container sidewall to enhance strength, then container strength is improved, but the strength enhancement is limited especially in middle regions where gripping occurs
Solution Approach 1:
The invention transitions from purely circumferential reinforcement (annular ribs) to include longitudinal reinforcement elements that extend along the height of the container. This adds a vertical dimension to the strengthening strategy, providing support in the middle regions where gripping forces are applied.
Solution Approach 2:
The reinforcement structure employs non-uniform distribution of strength elements, with increased concentration and complexity in the middle regions of the sidewall where gripping occurs. The panel sections and ribs are strategically positioned to provide enhanced support at these critical locations rather than uniform distribution throughout.
3Volume of stationary object
If containers are stacked for shipment and storage, then space efficiency is improved, but containers do not fully nest leading to increased space usage and instability
Solution Approach 1:
The container design incorporates geometric features including frustoconical sidewalls and complementary panel sections that enable one container to be fully inserted within another. The shaped sidewalls and panel configurations create interlocking geometries that ensure complete nesting, maximizing space efficiency during storage and shipment.
Solution Approach 2:
The container sidewalls are pre-formed with specific geometric configurations (frustoconical shape, panel section orientations) that automatically guide proper alignment and nesting when containers are stacked. This preliminary geometric preparation ensures that containers self-align into stable nested configurations without requiring additional alignment mechanisms.
4Strength
If non-round cross-sectional shapes are used for containers, then container strength and stacking are improved, but containers do not fully nest when stacked
Solution Approach 1:
The non-round cross-section is divided into multiple panel sections separated by annular ribs, creating a segmented polygonal structure. This segmentation allows the container to maintain the strength benefits of non-circular geometry while the flat panel sections provide planar surfaces that enable complete nesting when containers are stacked in aligned orientations.
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 may include a generally parabolic-shape protrusion that extends radially outwardly relative from the sidewall to form peaks along an external surface of the container and valleys along an inner surface of the container. The peaks are adapted to direct corners of the first container's sidewall toward the corners of the second container's sidewall in order to orient the containers as they are stacked.