Petal-Shaped Bottom With Transverse Grooves
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Solution Overview
Problem
Existing petal-shaped bottoms for containers, while effective for carbonated liquids, consume excessive material and become unstable when reduced in weight, leading to deformation under internal pressure, which compromises stacking and palletization.
Innovation Solution
A petal-shaped bottom design with transverse grooves in the valleys to control deformations, featuring a convex shape, protruding feet, and a central dome to enhance mechanical strength, allowing for reduced material usage while maintaining stability and preventing unexpected folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the height of the petal-shaped bottom is reduced to limit material consumption, then the quantity of material is reduced, but the bottom deforms under internal pressure and loses mechanical strength
Solution Approach 1:
The bottom is divided into functional zones: feet for support, valleys for absorption, and grooves for controlled deformation. This segmentation allows each zone to perform its specific function efficiently, maintaining overall strength while using less material.
Solution Approach 2:
Transverse grooves are added to the valleys, introducing a new dimensional feature that enables controlled deformation in the radial direction. This allows the bottom to accommodate pressure-induced deformations without compromising structural integrity, even with reduced material quantity.
2Weight of moving object
If the petal-shaped bottom is lightened by 15% to reduce weight, then material consumption is reduced, but unexpected folds appear in the valleys and stacking becomes hazardous
Solution Approach 1:
Transverse grooves are pre-formed in the valleys during manufacturing, creating predetermined deformation paths before the container is put into service. This preliminary structuring prevents random fold formation during stacking and ensures reliable performance throughout the container's lifecycle.
Solution Approach 2:
The introduction of transverse grooves changes the deformation parameters of the bottom, allowing controlled deformation in specific zones while maintaining rigidity in load-bearing areas. This enables weight reduction while preserving stacking reliability.
3Strength
If transverse grooves are added to the valleys, then controlled deformation is achieved and mechanical strength is maintained, but the device complexity increases
Solution Approach 1:
The grooves are localized specifically in the valley zones where deformation needs to be controlled, rather than being applied uniformly across the entire bottom. This localized approach provides the necessary mechanical strength enhancement while minimizing the increase in overall structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves improved mechanical strength and stability, enabling safe stacking and palletization without material weight increase, even under moderate internal pressures, by absorbing pressure-induced deformations through the grooves.
Implementation Method 1
These grooves make it possible to control, by absorbing them, the deformations that are due to the pressure prevailing in the container
Data Source
AI summary
Container made of plastic material includes a body and a petal-shaped bottom (3) extending the body, the bottom (3) having a bottom wall (4) of general convex shape toward the outside of the container, from which feet (7) formed by protrusions project, separated two by two by portions of the bottom wall (4) forming recessed valleys (12) that extend radially to a periphery (8) of the bottom (3), the bottom (3) also including, in each valley (12), in the vicinity of the periphery (8) of the bottom (3), at least one groove (17, 18) that extends transversely relative to the radial direction of extension of the valley (12).