Container having enhanced wall integrity and alignment element
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Solution Overview
Problem
Thin-walled disposable plastic containers are prone to bending and distortion, and they do not fully nest when stacked, leading to increased space usage and instability.
Innovation Solution
A container design featuring a polygonal frustoconical sidewall with a rotational alignment structure that includes protruding or recessed ribs and fingers to ensure parallel alignment and nesting of adjacent containers, enhancing structural integrity and reducing material thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If thinner material is used for container walls, then production cost is reduced, but structural strength and resistance to bending/crushing deteriorates
Solution Approach 1:
The container sidewall is divided into multiple panel sections separated by ribs. This segmentation creates a multi-chamber structure that provides structural strength through the rib divisions while using thinner material between the ribs, resolving the contradiction between thin walls and structural strength
Solution Approach 2:
The container employs a composite structure combining thin thermoplastic material with integrated rib reinforcements. The ribs act as structural elements that compensate for the thinness of the wall material, achieving both cost reduction through thinner material and maintained strength through the composite rib-wall structure
2Strength
If thicker material construction is used, then structural strength is improved, but production cost increases
Solution Approach 1:
Instead of uniformly thickening the entire container wall, the invention segments the wall into panels separated by ribs. This allows the ribs to provide localized structural reinforcement where needed while keeping the panel sections thin, avoiding the increased production cost associated with uniformly thick walls
Solution Approach 2:
The rib structures provide localized reinforcement at specific positions (corners and panel divisions) rather than uniformly throughout the entire container wall. This local quality approach maintains structural strength at critical points while keeping overall material usage and production cost low
3Device complexity
If containers are stacked without alignment features, then device complexity is reduced, but nesting efficiency and stack stability deteriorate
Solution Approach 1:
The container employs an asymmetric polygonal cross-section (e.g., hexagonal or octagonal) rather than a circular shape. This asymmetry creates unique panel orientations that naturally align when containers are stacked, improving nesting efficiency and stack stability without requiring complex alignment features
Solution Approach 2:
The panel sections and ribs are pre-formed during container manufacturing with specific geometric orientations. This preliminary action ensures that when containers are stacked, the panels and ribs automatically align in a nested configuration, providing stable stacking without requiring additional alignment mechanisms
4Strength
If non-round cross-sectional shapes are used, then structural strength is improved, but nesting efficiency deteriorates
Solution Approach 1:
The container uses a regular polygonal cross-section (such as hexagonal or octagonal) that combines the structural strength benefits of non-round shapes with improved nesting characteristics. The symmetric polygonal geometry allows containers to nest more efficiently compared to irregular shapes, reducing stack space while maintaining structural integrity
Solution Approach 2:
The container employs a frustoconical shape with curved surfaces transitioning between the polygonal base and the top opening. This curvature allows the rigid polygonal panels to flex slightly during nesting, improving space efficiency in stacked configurations while maintaining the structural strength benefits of the polygonal panel design
Data Source
AI summary
A container having enhanced wall integrity and a rotational element is provided that includes a sidewall having 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. The peaks include first and second faces sloping in opposite directions designed to direct corners of the first container's sidewall toward the interior valleys of the second container in order to orient the containers as they are stacked.