Blow Molded Bottle Reduced Pressure Absorbing Panel Design
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Solution Overview
Problem
Small capacity synthetic resin blow molded bottles inadequately provide reduced pressure absorbing functions due to limited trunk area, and shoulder column portions tend to deform under pressure.
Innovation Solution
The bottle features a cylindrical mouth, shoulder, trunk, and bottom with alternately arranged reduced pressure absorbing panel portions and column portions, where panel portions have bent edges and surface features that increase in diameter, ensuring a sufficient absorbing function and preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If reduced pressure absorbing panel portions are provided in the trunk of a small capacity bottle, then the bottle structure is simple, but the reduced pressure absorbing function is insufficient due to small trunk area
Solution Approach 1:
The patent transitions from providing reduced pressure absorbing panel portions only in the trunk (one dimension) to extending them into the shoulder region (adding another dimension). This dimensional expansion allows the panel portions to occupy a larger volume while maintaining structural simplicity, thereby resolving the contradiction between simple structure and sufficient absorbing function in small capacity bottles.
2Reliability
If reduced pressure absorbing panel portions are provided in the shoulder, then the reduced pressure absorbing function is improved, but shoulder column portions undergo depression and deformation
Solution Approach 1:
The patent applies local quality by creating alternating regions of different structural characteristics: panel portions with larger cross-sectional areas for pressure absorption, and column portions with smaller cross-sectional areas for structural support. This local differentiation allows the shoulder region to simultaneously achieve improved reduced pressure absorbing function while preventing column deformation through strategically placed supportive column structures.
3Volume of moving object
If the bottle has a small capacity, then the bottle size is compact, but the trunk area is insufficient for effective reduced pressure absorption
Solution Approach 1:
The patent resolves this contradiction by extending the reduced pressure absorbing panel portions from the trunk into the shoulder region, effectively utilizing the shoulder's larger cross-sectional area to compensate for the limited trunk volume. This dimensional extension allows small capacity bottles to achieve adequate pressure absorption capacity without increasing overall bottle volume.
Solution Approach 2:
The patent segments the bottle body into distinct functional regions: panel portions for pressure absorption and column portions for structural support. This segmentation allows optimized allocation of space within the compact bottle, ensuring that pressure absorption functionality is sufficient despite the small overall capacity.
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
This design effectively absorbs reduced pressure in small capacity bottles, preventing unsightly deformation and enhancing the appearance by optimizing the reduced pressure absorbing function.
Implementation Method 1
reduced pressure absorbing panel portions to absorb (mitigate) reduced pressure that is generated inside the bottle when the content liquid is cooled after being filled at the high temperature
Data Source
AI summary
In a synthetic resin blow molded bottle, reduced pressure absorbing panel portions and column portions are formed alternately in the circumferential direction. Each column portion has a diameter that gradually increases downward and that remains substantially constant vertically. Each reduced pressure absorbing panel portion includes a pair of panel side edge portions, which is bent to the inner side from the adjacent column portions, a panel surface portion, which connects the pair of panel side edge portions, and a panel lower edge portion, which is bent to the outer side from a lower end edge of the panel surface portion. The panel surface portion of each reduced pressure absorbing panel portion includes a panel upper-side surface portion, whose diameter gradually increases downward, and a panel lower-side surface portion, which connects the panel upper-side surface portion and the panel lower edge portion and which has a substantially constant diameter vertically.