Container Closure With Pivot-Side Lifting Member for Plug-Seal Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing closure devices with tethered caps and plug seals face issues with re-closing, leading to deformation or breakage of the plug seal and subsequent leaking, and require consideration for ease of molding.
Innovation Solution
A closure device with a cap that includes a lifting member positioned at the pivot side, which repositions the cap relative to the container neck during closing, aligning the container wall with the plug seal channel to avoid damage, and features a mold for injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cap is re-closed without repositioning after opening, then the closing operation is simple and quick, but the plug seal impacts the container wall causing deformation or breakage
Solution Approach 1:
The lifting member performs a preliminary action by contacting the container wall before the plug seal during the closing operation. This preliminary contact elevates the cap and repositions the plug seal to align with the channel, preventing direct impact with the container wall and avoiding deformation or breakage of the plug seal.
2Reliability
If the lifting member is added to reposition the cap during closing, then the plug seal is protected from damage, but the device complexity increases
Solution Approach 1:
The lifting member is merged with the cap structure as an integrated component. The lifting member extends from the base of the cap and is positioned radially inwardly from the plug seal, combining the sealing function and the repositioning function into a single unified structure, thereby minimizing additional complexity.
3Manufacturing precision
If the lifting member is positioned radially inwardly from the plug seal at the pivot side, then the cap aligns properly during closing, but the molding process becomes more complex
Solution Approach 1:
The lifting member is positioned at a specific local region of the cap - radially inwardly from the plug seal and at the pivot side. This localized positioning provides the necessary alignment function during closing while minimizing the overall complexity of the molding process, as only a specific region of the cap requires the additional structural feature.
Data Source
AI summary
A closure device for a container neck having a cap which is pivotable between closed open configurations, comprising: a base; an outer wall extending circumferentially around the base; a plug seal extending from the base, at an inner face of the cap, and spaced from the outer wall to define a channel for receiving the container neck and for forming a seal against an inner wall of the container neck when the cap is in the closed configuration; a lifting member extending from the base and positioned radially inwardly from the plug seal, the lifting member being positioned at a pivot-side of the cap and having a contact face at a free end of the lifting member for contacting a top end of the container neck before the top end contacts the plug seal during actuation of the cap from the open configuration to the closed configuration.