Container Bottom Reinforcement for Pressure Deformation Control
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Solution Overview
Problem
Existing containers face challenges in maintaining rigidity and aesthetic appearance when internal pressure fluctuations occur, particularly during temperature changes, as reinforcement ribs on the bottom portion do not adequately adjust to positive or negative pressure shifts.
Innovation Solution
The container design incorporates reinforcement portions with specific shapes and orientations, including radially extending ribs, to enhance the rigidity of the raised bottom portion, ensuring it maintains its shape during pressure fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the thickness of the bottom portion is reduced to allow easy deformation during decompression, then the bottom portion can be deformed to suppress body portion deformation, but the rigidity becomes too low causing excessive deformation when internal pressure increases
Solution Approach 1:
The bottom portion is divided into multiple functional zones: a thick rigid ring portion at the periphery for maintaining overall rigidity, a thinner central depressed portion for absorbing decompression, and radial reinforcement ribs connecting them. This segmentation allows different regions to serve different purposes simultaneously.
Solution Approach 2:
Different thicknesses and structural properties are applied to different locations of the bottom portion. The peripheral ring has greater thickness for rigidity, while the central area has reduced thickness for deformability. Reinforcement ribs are strategically placed to provide localized structural support where needed.
2Strength
If reinforcement ribs are provided on the bottom portion to increase rigidity, then the bottom portion maintains its shape better, but the ability to deform during pressure fluctuation is reduced
Solution Approach 1:
The reinforcement structure is segmented into radial ribs that extend from the central depressed portion toward the peripheral ring, but do not completely rigidly connect them. This allows controlled deformation while maintaining overall rigidity.
Solution Approach 2:
The bottom portion combines regions of different structural properties: rigid peripheral ring, flexible central depressed area, and intermediate reinforcement ribs. This composite structure integrates both rigidity and deformability characteristics in a single component.
3Stability of the object's composition
If uneven portions are provided on the body portion to suppress irregular deformation during decompression, then the body portion maintains its shape, but the surface becomes uneven affecting label attachment
Solution Approach 1:
The deformation-absorbing structure is extracted from the body portion and relocated to the bottom portion. The recessed portion is formed in the bottom surface, separating the deformation function from the body portion's surface requirements, allowing the body to remain smooth for proper label attachment.
4Reliability
If the container is sterilized at high temperature before filling to ensure content quality, then content quality is maintained, but the container may deform due to internal pressure increase
Solution Approach 1:
The bottom portion is pre-designed with a recessed portion and reinforcement structure that can accommodate pressure increases during sterilization. This beforehand preparation allows the container to withstand sterilization conditions without deforming, ensuring both content quality and container integrity.
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 effectively suppresses deformation of the bottom portion, maintaining the container's aesthetic appearance and structural integrity under varying internal pressures, including those caused by temperature changes during sterilization processes.
Implementation Method 1
reinforcement portions 24 that extend in a radial direction of the bottom portion 14 and reinforce the bottom portion 14 are formed at least in the connecting portion 21
Data Source
Figure 1
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Figure 4~5
AI summary
This container is configured so that: a bottom section 14 has a ground contact section 18 provided to the outer periphery of a body section 13, and has a raised bottom section 17 provided inside the ground contact section 18 and deformed in accordance with a change in inner pressure; the raised bottom section 17 is provided with an upper surface section 20 provided at the center, and is also provided with a connection section 21 which connects the upper surface section 20 and the ground contact section 18; the connection section 21 is formed so that, when the inner pressure is normal pressure, the upper surface section 20-side end of the connection section 21 is positioned closer to a neck section 12 than the ground contact section 18-side end of the connection section 21; and at least the connection section 21 of the bottom section 14 is provided with a reinforcement section 24 which extends in the radial direction of the bottom section 14 and reinforces the bottom section 14.