Thermoplastic Bottle Tilted Annular Gripping Portion
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Solution Overview
Problem
Plastic bottles with conventional annular gripping portions lack sufficient top loading resistance, leading to potential buckling or collapse during stacking, and require excessive plastic material, which complicates pouring and increases material waste.
Innovation Solution
A thermoplastic bottle design featuring a side wall with a symmetry plane and a tilted annular gripping portion, where the thickness varies to create a natural hand positioning guide, enhancing both top loading resistance and aesthetic appeal while minimizing plastic usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional annular gripping portion is provided in the bottle, then the ease of operation is improved, but the top loading resistance deteriorates causing buckling or collapse during stacking
Solution Approach 1:
The invention applies local quality by providing a gripping portion only in a specific angular sector (approximately 120 degrees) rather than a complete annular gripping portion around the entire bottle. This localized gripping area maintains ease of operation while preserving structural integrity and top loading resistance in the remaining bottle walls.
Solution Approach 2:
The gripping portion is segmented into a specific angular sector rather than being continuous around the bottle. This segmentation creates discrete gripping zones that provide ergonomic benefits while maintaining structural strength in non-gripping areas, resolving the contradiction between ease of operation and stacking strength.
2Ease of operation
If panels are used to create the gripping portion, then the ease of operation is improved, but the amount of plastic material required increases
Solution Approach 1:
The gripping portion is created through localized geometric features (such as rounded edges or slight profile variations) in a specific angular sector rather than adding separate panel structures. This approach provides ergonomic gripping benefits while minimizing additional plastic material consumption.
Solution Approach 2:
The gripping features are merged into the main bottle wall structure rather than being separate added components. The gripping portion is formed as an integrated part of the bottle profile, eliminating the need for additional panels and reducing overall material usage.
3Strength
If the bottle body includes interconnected walls with gradual transitions, then the top loading resistance is improved, but the visual impression becomes common and compactness is reduced
Solution Approach 1:
The bottle combines gradual transitions in the main body for structural strength with a localized distinctive gripping portion in a specific angular sector. This allows the bottle to maintain both top loading resistance through continuous walls and visual appeal through the unique asymmetric gripping feature.
Solution Approach 2:
The gripping portion is positioned asymmetrically in a specific angular sector rather than being uniformly distributed. This asymmetric design provides distinctive visual appeal and brand recognition while maintaining the symmetric structural integrity needed for top loading resistance.
Data Source
AI summary
The side wall, extending below a shoulder of the thermoplastic bottle, has a gripping portion formed substantially in the middle of the bottle body and includes a first line and a second line each defined in a vertical symmetry plane. The second line has a second point at minimal distance ds2 between the side wall and the central axis, while the first line has a first point at minimal distance dsl between the first line and the central axis. For these particular points in the gripping portion: ·ds2<ds1·hs1<hs2 A thick portion is provided at and above the second point.