Parallelogram Corner Container Blank for Stability
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Solution Overview
Problem
Collapsible containers with asymmetric geometry tend to tilt and wrinkle, leading to instability and increased material waste during manufacturing, especially when curved designs are used.
Innovation Solution
A container blank with a symmetrical frustoconical central portion and acute-angled parallelogram corners, which balances the center of gravity and reduces tilting, combined with a handle portion for easy gripping and a spout-like duct for pouring, and a tapering filling duct to prevent air penetration and spillage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rectilinear container blank with a handle-forming corner or lateral portion is used, then a carrying means can be arranged in the container, but the compartment has asymmetric geometry causing the centre of gravity to move forward and the container to tilt and wrinkle
Solution Approach 1:
The patent applies asymmetry in reverse by designing a symmetric container blank geometry. The container blank has a symmetric longitudinal profile where the front boundary line and rear boundary line are mirror images, and the side walls are symmetrically arranged. This symmetry ensures that the centre of gravity remains centered, preventing tilting and wrinkling, while still allowing handle formation at the rear portion for carrying capability.
2Shape
If the container blank has an outer curvature to improve appearance, then the container is more aesthetically pleasing, but the tendency towards wrinkling increases and material waste increases
Solution Approach 1:
The patent optimizes the curvature parameters of the container blank by introducing a controlled longitudinal curvature that is gentle enough to maintain aesthetic appearance but not so sharp as to cause wrinkling. The boundary lines are designed with specific curvature radii that balance visual appeal with structural stability, preventing the material from folding or wrinkling during filling and handling.
3Shape
If sharp curvatures are used in the container blank to enhance design, then the container has a more distinctive appearance, but the amount of material waste increases during manufacturing
Solution Approach 1:
The patent employs smooth, continuous curvatures throughout the container blank design, avoiding sharp angles or abrupt transitions. The boundary lines and side walls feature gentle arcs that flow into each other, creating a distinctive organic appearance while ensuring efficient material utilization during manufacturing. The curvature is optimized to minimize excess material that would otherwise be wasted during the forming process.
Data Source
AI summary
The invention relates to a container blank (1) comprising a bottom-forming wall (3) and two opposite side walls (2), said walls (2, 3) being joined along boundary lines (9, 10, 13). The container blank is characterised in that intersections (A, B, C, D) between a front boundary line (9) and respectively a rear boundary line (10) and an upper portion (5) and a bottom portion (7) constitute corners of a parallelogram having an angle of inclination ((x) relative to the longitudinal axis (L) of the container blank (1). The front boundary angle which is acute towards the bottom portion (7). The front boundary line (9) and the intermediate boundary line (13) give the central portion (6) an essentially symmetrical shape along the longitudinal axis (L) of the container blank (1). The invention also relates to a container (21) which is produced by filling of such a container blank (1).