Molded Plastic Container With Circular Top And Rectangular Bottom
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Solution Overview
Problem
Existing container designs fail to maximize capacity while allowing easy orientation for labeling and efficient filling, and compatibility with existing packaging machinery, particularly in molded plastic containers with circular top openings.
Innovation Solution
A molded plastic container with a circular top opening, a flat bottom panel featuring straight and arcuate sides, and a side panel forming a truncated cone, allowing for efficient filling and labeling, and compatibility with existing machinery, with specific radii ratios optimizing capacity and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a circular top opening is used in the container, then compatibility with existing packaging machinery and ease of filling is improved, but maximizing capacity while maintaining structural efficiency becomes difficult
Solution Approach 1:
The container is divided into distinct geometric zones: a circular top opening region for machinery compatibility, and a rectangular bottom panel region for capacity optimization. The side walls transition between these zones, allowing each section to fulfill its specific function without compromising the other.
Solution Approach 2:
The container transitions from a two-dimensional circular cross-section at the top to a four-cornered rectangular base, utilizing vertical dimensionality to reconcile the conflicting geometric requirements. This dimensional transition allows the container to maintain circular compatibility at the opening while achieving rectangular space efficiency at the base.
2Volume of moving object
If the bottom panel has a rectangular shape with four corners, then capacity is maximized, but compatibility with circular top opening and existing machinery becomes problematic
Solution Approach 1:
The container employs asymmetric geometry where the top opening is circular and the bottom panel is rectangular with four corners. This intentional asymmetry allows the container to optimize for different functions at different levels: circular symmetry for machinery interface and rectangular asymmetry for space utilization.
3Ease of manufacture
If traditional container designs are used, then manufacturing simplicity is maintained, but orientation for labeling and filling efficiency is compromised
Solution Approach 1:
The container is pre-formed with a four-cornered rectangular base and specific aspect ratio dimensions during the molding process. This preliminary geometric configuration ensures that the container naturally orients itself correctly during automated filling and labeling operations, eliminating the need for additional orientation mechanisms or complex handling procedures.
Data Source
AI summary
A container is disclosed having a top rim, a sidewall, and a bottom panel, wherein the sidewall extends at least from the top rim to the bottom panel, the top rim is generally circular, the bottom panel is generally rectangular, and the sidewall transitions from a circular portion adjacent to the top rim to a generally rectangular portion adjacent to the bottom panel.