Blow-Molded Container Grooves Axial Compression Strength
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Solution Overview
Problem
Containers used to enclose and transport fluids or objects face challenges in balancing strength against material cost and weight, often experiencing breakage due to stresses during use.
Innovation Solution
The development of high-strength blow-molded containers with a thin overall sidewall thickness and variable wall thickness featuring grooves to distribute axial compression loads, providing crush resistance while minimizing material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If strengthening features are incorporated into the container to provide strength against breakage, then the strength of the container is improved, but the weight and cost of materials increase
Solution Approach 1:
The container sidewall is segmented into multiple axial sections separated by circumferential grooves. This segmentation creates discrete structural zones that can independently bear compressive loads, providing strength without requiring a uniformly thick wall throughout the entire container
Solution Approach 2:
The container employs variable wall thickness with thicker material concentrated at the axial sections between grooves where compressive strength is needed, and thinner material in other areas. This local quality optimization ensures strength where required while minimizing material usage and weight
2Strength
If strengthening features are incorporated into the container to provide strength against breakage, then the strength of the container is improved, but the cost of materials increases
Solution Approach 1:
The container sidewall is segmented into multiple axial sections separated by circumferential grooves. This segmentation creates discrete structural zones that can independently bear compressive loads, providing strength without requiring a uniformly thick wall throughout the entire container
Solution Approach 2:
The container employs variable wall thickness with thicker material concentrated at the axial sections between grooves where compressive strength is needed, and thinner material in other areas. This local quality optimization ensures strength where required while minimizing material usage and cost
3Quantity of substance
If the container uses a thin overall sidewall thickness to minimize material usage, then the cost and weight of materials are reduced, but the strength against breakage deteriorates
Solution Approach 1:
The container sidewall is segmented into multiple axial sections separated by circumferential grooves. This segmentation creates discrete structural zones that can independently bear compressive loads, providing strength without requiring a uniformly thick wall throughout the entire container
Solution Approach 2:
The container employs variable wall thickness with thicker material concentrated at the axial sections between grooves where compressive strength is needed, and thinner material in other areas. This local quality optimization ensures strength where required while minimizing material usage and cost
4Quantity of substance
If the container uses a thin overall sidewall thickness to minimize material usage, then the cost and weight of materials are reduced, but the strength against breakage deteriorates
Solution Approach 1:
The container sidewall is segmented into multiple axial sections separated by circumferential grooves. This segmentation creates discrete structural zones that can independently bear compressive loads, providing strength without requiring a uniformly thick wall throughout the entire container
Solution Approach 2:
The container employs variable wall thickness with thicker material concentrated at the axial sections between grooves where compressive strength is needed, and thinner material in other areas. This local quality optimization ensures strength where required while minimizing material usage and cost
Data Source
AI summary
A container may comprise a tubular body having a longitudinal axis and a rounded sidewall; a base portion; a rim portion; a vertical portion defined, in part, by the rounded sidewall, aligned along the longitudinal axis, and extending between the base portion and the rim portion; a plurality of grooves defined within the vertical portion, each of the grooves comprising a width defining opposing sides of each of the plurality of grooves, wherein: each of the plurality of grooves is aligned parallel with the longitudinal axis; the valley of each of the plurality of grooves is radially inset a distance from the vertical portion perimeter; and opposing sides of adjacently positioned ones of the plurality of grooves define a peak that is radially aligned with the vertical portion perimeter. The container may also comprise a set of base transition grooves extending between the base portion and the vertical portion and aligned parallel with the longitudinal axis.