Tamper Evidence Closure with Segmented Cam for Visible Band Detachment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional tamper evidence bands often fail to detach from the closure upon being loosened, making it difficult for end-users to determine if the closure has been previously removed from the container.
Innovation Solution
A threaded tamper evidence finish and closure system is introduced, featuring a tamper evidence ledge, threads for secure fastening, a handling valley for air-conveying, and a segmented cam with a tamper evidence band that remains engaged with the ledge after closure removal, providing a visible indication of tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional tamper evidence band is used that remains on the closure after loosening, then the closure can be easily loosened and reused, but the end-user cannot reliably determine if the closure has been previously removed
Solution Approach 1:
The tamper evidence band is segmented into multiple sections that are attached to the closure at specific intervals. When the closure is loosened, these segments separate from the closure and remain on the container finish, providing a reliable visual indication that the closure has been removed while still allowing the closure to be easily loosened by the end-user.
2Reliability
If the tamper evidence band is firmly attached to the closure, then the band remains with the closure when loosened, but it becomes difficult for the end-user to directly observe whether the closure has been previously separated
Solution Approach 1:
The tamper evidence band is designed to be extracted from the closure when the closure is loosened. The band segments detach from the closure and remain on the container finish, making it visible to the end-user that the closure has been previously removed. This extraction mechanism maintains reliable attachment during normal use while providing clear visual feedback upon loosening.
3Ease of operation
If the closure is designed to allow easy removal by end-users, then consumer access is facilitated, but the container can be refilled and resealed with little visual indication of reuse
Solution Approach 1:
The tamper evidence band is pre-positioned on the closure in a way that anticipates future loosening. When the closure is initially loosened by the end-user, the band segments automatically detach and remain on the container finish, providing immediate visual indication of the loosening event. This preliminary configuration ensures that any subsequent removal, refilling, and reinstallation of the closure will be clearly visible to the end-user.
Data Source
AI summary
A tamper evidence closure is provided for rotatably engaging with a finish of a container to seal contents within the interior of the container. A multiplicity of thin connections attach a tamper evidence band to a circumference of the tamper evidence closure. A segmented cam extends around the circumference of the tamper evidence band. An angled lower surface of the cam facilitates passing the tamper evidence band over a tamper evidence ledge of the finish during assembly of the tamper evidence closure onto the container. An upper surface of the cam engages with the tamper evidence ledge to break the thin connections and retain the tamper evidence band positioned on the finish during loosening of the tamper evidence closure. Multiple overhang portions above the cam press against an upper portion of the tamper evidence ledge to ensure that the tamper evidence band remains engaged with the tamper evidence ledge.