Flip-Top Closure Tamper-Evident Tab Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flip-top closures lack effective tamper evidence mechanisms, making it difficult to ensure the integrity of sealed contents after opening.
Innovation Solution
A flip-top closure design featuring frangible tamper-evidence tabs that detach and remain visible, providing visual indication of tampering, with a retaining ring and undercut areas for secure engagement with the container neck, allowing for a semi-assembled package that can be easily opened and resealed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flip-top closure uses a frangible ring that breaks away and remains on the container neck, then tamper evidence is provided, but the closure structure becomes more complex and the assembly process becomes more difficult
Solution Approach 1:
The closure is divided into distinct functional components: a base with recessed areas, a lid with hinge connection, and tabs with lip portions. Each segment serves a specific purpose - the tabs provide tamper evidence while the base and lid provide sealing and opening functionality. This segmentation allows the tamper evidence feature to be integrated without requiring a completely complex closure redesign.
Solution Approach 2:
The tabs with lip portions are nested within recessed areas of the base when the closure is assembled. The lip portions fold back onto the tabs and lock with the base, creating a nested configuration that provides tamper evidence while maintaining a relatively simple overall closure structure. The nested design allows the tamper evidence mechanism to be compact and integrated.
2Reliability
If a flip-top closure incorporates a removable tamper-evident member, then tamper evidence is provided, but the device complexity increases and manufacturing becomes more difficult
Solution Approach 1:
The tamper evidence tabs are merged with the lid structure, extending from the lower surface of the lid. The lip portions of the tabs are integrated into the molding process along with the lid and base, creating a unified component structure. This merging eliminates the need for separate removable tamper-evident members, simplifying both manufacturing and assembly while maintaining effective tamper evidence functionality.
3Reliability
If the closure uses frangible elements connected to a portion of the flip-top closure, then tamper evidence is provided, but the closure structure becomes more complex
Solution Approach 1:
The frangible tabs with lip portions are located specifically at the lower surface of the lid, extending into recessed areas of the base. This localized placement of tamper evidence elements provides effective monitoring of closure integrity without requiring complex structures throughout the entire closure. The local quality approach concentrates the tamper evidence functionality in specific areas, maintaining overall structural simplicity.
Data Source
AI summary
A closure is provided for a container. The closure includes a base having a substantially cylindrical shape with a recessed area along a top perimeter of the base. The closure also includes a lid configured to close over and open off of the base. The closure further includes a tab that extends from a lower surface of the lid and includes a lip portion configured to fold back onto the tab and lock with the base when the lid is closed over the base. The tab detaches from the lid when opening the lid from the base after the lip portion is folded back onto the tab. A portion of the outer surface of the tab is visible through the at least one recessed area after the lid is closed over the base and remains partially visible after the tab has detached from the lid.