Tamper-Evident Capping Device Indicator Ring Mechanism
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Solution Overview
Problem
Existing tamper-evident capping devices for containers lack reliability due to easily accessible and removable stopping elements, which can be manipulated to falsely indicate the bottle's pristine integrity.
Innovation Solution
A capping device with an inner cover, pouring sleeve, outer casing, and a separate indicator ring, where the inner cover has outer shoulders preventing the indicator ring from closing, ensuring it remains visible after the first opening, and can be manufactured with various materials for identification methods like laser engraving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a stopping element is made easily accessible for visual indication, then the visibility of tamper-evident status is improved, but the reliability is worsened because the element can be removed or manipulated to create false indication of pristine integrity
Solution Approach 1:
The indicator ring is divided into a visible outer portion and an inner portion that can rotate independently. The outer portion remains fixed and visible on the bottle, while the inner portion rotates during opening to trigger the indication. This segmentation prevents manipulation of the visible indicator while maintaining its visibility.
Solution Approach 2:
The indicator ring is nested within the capping device structure, with the outer casing containing the inner rotating portion. The indicator ring is positioned between the pouring sleeve and outer casing, creating a nested configuration where the visible indicator is protected by the outer casing structure, preventing direct access and manipulation.
2Ease of manufacture
If the indicator ring is made as a separate part, then manufacturing flexibility and identification methods are improved, but the device complexity is increased
Solution Approach 1:
The indicator ring is manufactured as a separate component from the main capping device, allowing independent production and assembly. This enables the use of specialized materials and identification methods (such as laser engraving) for the indicator ring while keeping the rest of the capping device structure relatively simple and modular.
3Reliability
If the inner cover is provided with outer shoulders to prevent closing of indicator ring, then the reliability of tamper-evident indication is improved, but the device complexity is increased
Solution Approach 1:
The outer shoulders are provided only on the inner cover at specific locations where they are needed to prevent closing of the indicator ring. This localized feature adds minimal complexity only where required for the tamper-evident function, rather than complicating the entire capping device structure.
Data Source
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AI summary
The capping device comprises an inner cover connected with a pouring sleeve, formed with means for fixing to a bottle, a base, which is fixed in the pouring sleeve, a cap that is mounted on an outer casing and is connected with the inner cover, wherein the device additionally comprises an indicator ring, which is arranged between the pouring sleeve and the outer casing before the first opening, and which becomes visible on the bottle after first opening.