Bottle Bottom with Movable Wall for Decompression Absorption
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Solution Overview
Problem
Conventional bottles with variable bottom wall thickness or rigidity suffer from inconsistent decompression absorption performance, leading to instability in decompression absorption and room for improvement in absorption capacity.
Innovation Solution
A bottle design featuring a bottom wall with a grounding part, standing peripheral wall, annular movable wall, and depression peripheral wall, where the depression peripheral wall is formed with multiple stages and angular cylindrical parts to enhance decompression absorption by reducing wall thickness and increasing orientational crystallization, allowing for improved fluidity and moldability during blow molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bottom wall part has variable thickness or rigidity, then the decompression absorption performance is improved, but the stability of decompression absorption performance varies at different circumferential positions
Solution Approach 1:
The bottom wall part is segmented into multiple functional regions: a grounding part at the outer circumferential edge, a standing peripheral wall part extending upward from the grounding part, and a depression peripheral wall part extending upward from the standing peripheral wall part. This segmentation allows each region to contribute differently to decompression absorption while maintaining overall stability through their coordinated structure.
Solution Approach 2:
Different regions of the bottom wall part are designed with locally optimized properties: the grounding part provides a stable base, the standing peripheral wall part provides structural support, and the depression peripheral wall part provides decompression absorption. This local quality differentiation enables stable and uniform decompression absorption across different circumferential positions.
2Reliability
If the wall thickness of the depression peripheral wall part is reduced to increase decompression absorption, then the decompression absorption performance is improved, but the strength and rigidity of the bottle bottom may be compromised
Solution Approach 1:
The depression peripheral wall part is designed as a thin-walled structure that can flexibly deform during decompression. The movable wall part connects the standing peripheral wall part and the depression peripheral wall part, allowing the depression peripheral wall part to move upward when the bottle experiences decompression, thereby absorbing the decompression force without requiring thick walls.
Solution Approach 2:
The bottom wall part is designed with dynamic characteristics: the movable wall part can pivot about the connection part with the standing peripheral wall part, allowing the depression peripheral wall part to move upward during decompression. This dynamic response enables the thin-walled structure to absorb decompression forces effectively while maintaining strength.
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 stabilizes decompression absorption performance and increases the bottle's capacity for decompression absorption, ensuring consistent and efficient decompression handling while preventing strength loss and deformation.
Implementation Method 1
since the depression peripheral wall part is formed by forcing the synthetic resin material to be greatly stretched during the blow molding, a degree of orientational crystallization in the depression peripheral wall part can be increased
Implementation Method 2
The movable wall part is disposed to freely pivot around a connection part connected with the standing peripheral wall part so as to move the depression peripheral wall part in an upward direction
Data Source
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AI summary
Provided is a bottle (1) including a bottom part (14) having a bottom wall part (19). The bottom wall part (19) includes a grounding part (18) located at the outer circumferential edge thereof, a standing peripheral wall part (21) connecting to the grounding part (18) from a radial inner side of the bottle and extending upward, an annular movable wall part (22) projecting from an upper end of the standing peripheral wall part (21) toward the radial inner side of the bottle, and a depression peripheral wall part (23) extending upward from an inner end of the movable wall part (22) in a radial direction of the bottle. The movable wall part (22) is disposed to freely pivot around a connection part (25) connected with the standing peripheral wall part (21) so as to move the depression peripheral wall part (23) in an upward direction, and the depression peripheral wall part (23) is formed to have multiple stages.