Resealable Lid Assembly with Segmented Tear-Off Strip
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Solution Overview
Problem
Existing open-end container lids with resealable designs fail to form an airtight seal after initial removal, leading to content degradation or leakage when not used immediately, as they cannot be easily resealed once the initial seal is broken.
Innovation Solution
A lid and container assembly featuring a unique construction with internally directed threads and a hook mechanism, where the threads engage a channel on the container's lip after the tear-off strip is removed, allowing for secure screwing and unscrewing while maintaining an airtight seal through a gasket compression mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tear-off strip with hook is used to provide initial seal and access, then ease of operation is improved, but the ability to resealed is lost
Solution Approach 1:
The lid assembly is segmented into distinct functional components: a removable tear-off strip with hook for initial access, and permanently engaged threads that remain on the container lip after strip removal. This segmentation allows the access function to be temporary while the sealing function persists, resolving the contradiction between ease of access and ability to resealed.
Solution Approach 2:
The tear-off strip containing the hook is extracted as a separate, removable component from the main lid structure. After the strip is removed for initial access, the remaining lid with its threaded engagement mechanism stays attached to the container, preserving the sealing capability while having provided easy access.
2Ease of operation
If lid is pounded back on to reseal, then ease of operation is improved, but airtight seal is not achieved
Solution Approach 1:
The manual pounding action is replaced by a threaded mechanical engagement system. The threads on the lid engage with corresponding threads on the container lip, allowing the lid to be screwed back on with controlled, progressive engagement that ensures proper sealing without requiring forceful pounding, thus achieving both ease of operation and seal integrity.
3Reliability
If threads are provided on lid and container, then ability to resealed is improved, but device complexity increases
Solution Approach 1:
The threaded engagement mechanism serves multiple functions: it provides the initial sealing connection, enables easy removal for access, and allows repeated resealing operations. This multi-functionality reduces the need for separate mechanisms for each operation, thereby managing device complexity while achieving reliable resеalability.
Data Source
AI summary
An open ended container and lid combination provides a tamper indicator with a lid and container combination which can be pushed on by a manufacture and then the tamper indicator removed to allow the lid to be unscrewed relative to the container, while also still being able to be screwed back to a closed, and possibly sealed configuration. Two possible seals may be used comprising a seal against an interior surface of an upwardly extending wall of the container and an extension/groove combination of the lid and container.