IBC Molded Bottle Stiffening Protrusions for Crack Resistance
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Solution Overview
Problem
Existing intermediate bulk container (IBC) systems face challenges with the strength of molded bottles, which can lead to cracking and deformation under stress, affecting the integrity of the storage volume and increasing handling risks.
Innovation Solution
The IBC system incorporates a molded bottle design with vertical columns, sidewalls, and stiffening protrusions on the sidewalls, along with a gusset on the top wall, to enhance structural support and prevent bowing or flexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metallic reinforcement structure is added around the molded bottle, then the strength and stability are improved, but the cost increases and the device complexity increases
Solution Approach 1:
The reinforcement structure is segmented into multiple stiffening protrusions distributed at specific locations on the bottle (front, rear, left, and right sides). Each protrusion is positioned at a height between 0.25 to 0.75 times the bottle height from the base, creating localized reinforcement zones that collectively enhance overall structural strength without requiring a complete metallic cage around the entire bottle.
Solution Approach 2:
Instead of uniformly reinforcing the entire bottle, the patent applies reinforcement locally through stiffening protrusions only where needed - at the four cardinal directions and at specific height zones. This localized approach provides targeted strength enhancement while minimizing added complexity and cost compared to full metallic reinforcement.
2Strength
If the molded bottle wall thickness is increased to prevent cracking, then the strength is improved, but the internal storage volume decreases
Solution Approach 1:
The reinforcement function is segmented into multiple discrete stiffening protrusions rather than using a continuous thick wall structure. These protrusions are strategically positioned to provide crack resistance at critical stress points while maintaining thinner walls in non-critical areas, thereby preserving internal storage volume.
Solution Approach 2:
Instead of increasing strength by adding thickness in the radial dimension (wall thickness), the patent adds structural reinforcement in the vertical and horizontal dimensions through protrusions extending from the bottle surface. This dimensional approach provides crack resistance without compromising the internal storage volume.
3Stability of the object's composition
If stiffening protrusions are added to the sidewalls, then the resistance to bowing and flexing is improved, but the manufacturing complexity increases
Solution Approach 1:
The stiffening protrusions are merged with the bottle molding process itself, allowing both the bottle body and reinforcement features to be manufactured as a single integrated component. This integration reduces manufacturing complexity compared to adding separate reinforcement elements, as the protrusions are formed during the rotational molding process using mold extensions.
Solution Approach 2:
The stiffening protrusions serve multiple functions simultaneously: they provide resistance to bowing and flexing, enhance stacking stability, and contribute to crack prevention. This multi-functionality reduces the need for additional separate components, thereby minimizing manufacturing complexity while achieving multiple structural goals.
Data Source
AI summary
An intermediate bulk container system includes a molded bottle and a pallet. The molded bottle includes a bottom wall and a top wall opposite the bottom wall. A plurality of support columns extend vertically from the bottom wall and define a column thickness. A plurality of sidewalls extending vertically between the bottom wall and the top wall and horizontally between the support columns. A stiffening protrusion is defined on at least a pair of the sidewalls.