Container Closure Tamper Element Retention Mechanism
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Solution Overview
Problem
Existing container closures with tamper evidence elements face challenges such as easy loss of the tamper evidence element, difficulty in opening, inadequate indication of the unsealed state, and a two-handed operation requirement.
Innovation Solution
A closure design featuring a tamper evidence element connected by a frangible connection to a movable second part, which ruptures upon opening, and a holding device that secures the tamper evidence element to the first part after rupture, ensuring it does not get lost and can be recycled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tamper evidence element is connected by a frangible connection to the second part, then the tamper evidence element can rupture upon opening to indicate unsealed state, but the tamper evidence element easily gets lost after detachment
Solution Approach 1:
The holding device acts as an intermediary between the tamper evidence element and the first part. After the frangible connection ruptures, the holding device captures and retains the tamper evidence element, preventing it from being lost while maintaining the tamper indication function. This mediator ensures the element remains attached to the closure assembly throughout the opening process.
2Reliability
If the tamper evidence element is designed to detach as a small piece, then it can indicate tamper by separation, but it creates environmental pollution and is difficult to recycle
Solution Approach 1:
The holding device enables recovery of the tamper evidence element after use. Instead of being discarded as a small detached piece that pollutes the environment, the element is retained by the holding device on the closure assembly, allowing it to be recovered and recycled together with the main closure components.
3Reliability
If the closure requires two-handed operation for opening, then it ensures secure handling, but it reduces operational convenience and intuitiveness
Solution Approach 1:
The holding device provides self-service functionality during the opening process. As the user opens the closure, the holding device automatically captures and secures the tamper evidence element without requiring additional manual intervention. This eliminates the need for two-handed operation while maintaining secure handling and proper tamper evidence retention.
Data Source
Figure 1~2B
Figure 3~5
Figure 6A~7
AI summary
A closure (1) for a container, comprising: a first part (2); a second part (3) relatively movable to the first part (2) to move between a closed condition, in which an opening (21) of the closure (1) is covered, and an open condition, in which the opening (21) is uncovered; and a tamper evidence element (5) that is, on the one hand, connected to the second part (3) by a frangible connection (51) and that is, on the other hand, arranged to be withheld relative to the first part (2) such that, as the second part (3) moves with an opening motion relative to the first part (2) from the closed condition to the open condition, the opening motion ruptures the frangible connection (51). The tamper evidence element (5) is adapted to be actuated in order to rupture the frangible connection (51) independent of moving the second part (3) relative to the first part (2) by the opening motion, and the closure (1) further comprises a holding device (22) arranged on the first part (2) and adapted to secure the tamper evidence element (5) to the first part (2) after the frangible connection (51) has been ruptured.