Plastic Bottle Neck Ribs and Knurled Base for Stable Capping
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Solution Overview
Problem
Plastic beverage bottles are prone to sliding due to their low coefficient of friction and lack of robustness, and existing capping technologies often require external support rings that can interfere with the sealing process, especially for long-skirt capsules.
Innovation Solution
The design incorporates a plastic bottle with a neck portion featuring spaced apart circumferential ribs aligned normal to the vertical axis and a knurled base finish with ridges to prevent sliding, allowing for hermetic sealing without an exterior support ring, using a threaded segment for the bottle cap and a skirted capsule.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an exterior support ring is used for capping, then the bottle can be hermetically sealed, but the support ring interferes with the sealing process of long-skirt capsules
Solution Approach 1:
The patent removes the exterior support ring from the bottle design entirely. Instead, the bottle neck incorporates integrated structural features (such as an integrated cap support structure or modified neck geometry) that provide the necessary support during capping without requiring a separate exterior support ring, thereby eliminating interference with long-skirt capsule sealing
Solution Approach 2:
The patent merges the support function previously performed by the exterior support ring into the bottle neck structure itself. The neck portion is designed with integrated features that combine both structural support and sealing functions, eliminating the need for a separate support ring component
2Weight of moving object
If plastic material is used for the bottle, then the bottle is lightweight and cost-effective, but the low coefficient of friction causes the bottle to slide when upright
Solution Approach 1:
The patent applies a non-sliding element (such as a knurled surface, ribbed pattern, or textured finish) to the bottom surface of the bottle. This local modification increases friction only at the contact point with the supporting surface, preventing sliding while maintaining the overall lightweight plastic construction of the bottle
Solution Approach 2:
The patent incorporates a non-sliding element with a specific geometric profile (such as a concave base or curved non-sliding feature) that provides stability by creating a stable contact point or line with the supporting surface, preventing the bottle from sliding when upright
3Reliability
If circumferential ribs are added to the neck portion, then the bottle can support long-skirt capsules and improve capping, but the device complexity increases
Solution Approach 1:
The circumferential ribs on the bottle neck serve multiple functions: they provide structural support for long-skirt capsules during capping, create a stable interface for cap engagement, and potentially aid in the molding process. By making the neck structure multi-functional, the patent reduces the need for additional separate components, thereby limiting the increase in overall device complexity
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 solution effectively prevents bottle sliding and enables proper capping of long-skirt capsules by providing a stable contact surface and a concave support ledge, enhancing the sealing process and handling efficiency.
Implementation Method 1
a bottle made of plastic in its upright position may have a tendency to slide. Prior attempts to address the sliding issue have included molding feet into the bottom surface of the bottle.
Implementation Method 2
The neck portion includes a threaded segment for receiving a bottle cap. The bottle cap is attached to the bottle without the use of an exterior support ring.
Data Source
AI summary
Disclosed is a bottle for containing a beverage which has plastic body. The bottle includes a bottom surface having a non-sliding element located to be in contact with a surface when the bottle is in the upright position. In addition or alternately, the bottle includes a neck portion which has at least two spaced apart circumferential ribs. Preferably, each of the ribs is disposed normal to a vertical axis of the bottle in its upright position. In another embodiment of the invention, the ribs are continuous along the exterior of the neck.