Tamper-Evident Container With Tear Tab And Hinged Lid
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Solution Overview
Problem
Existing container designs fail to provide a clear visual indication of whether the lid has been opened, making it difficult for consumers to determine if a container has been tampered with, and allowing pilferers to reopen the container without leaving evidence.
Innovation Solution
A tamper-indicating container structure featuring a 'Tear here' tab with specific perforation and clean cut lines that, when broken, allows the lid to be opened while preventing unauthorized access without removing the tab, and a hinge plate that separates if attempted to be prised open without tearing the tab.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a tab with perforations is used to indicate lid opening, then visual indication is provided, but the indication is not obvious and can be easily bypassed by pilferers
Solution Approach 1:
The tab is extracted as a separate removable component from the lid assembly. When the lid is opened, the tab is pulled out through perforations, creating a physical gap that provides clear visual indication. This separates the indication function from the lid structure itself, making the indication obvious and hard to bypass.
Solution Approach 2:
The tab is pre-positioned in a specific location on the lid before use. The perforations are pre-formed in a pattern that guides the tab removal action. This preliminary arrangement ensures that when opening occurs, the tab will naturally be removed and provide indication, preventing pilferers from bypassing the indication mechanism.
2Stability of the object's composition
If the lid is secured by press fit friction, then the lid remains closed during handling, but consumers must intentionally exert force to open it
Solution Approach 1:
The lid opening mechanism is segmented into two distinct actions: breaking the press-fit seal and removing the tab. The press-fit design maintains stability during handling, while the tab with perforations provides a designated breaking point that requires intentional force, separating the stable closure function from the deliberate opening action.
3Loss of information
If a tab interconnects base and lid, then tab removal indicates opening, but experienced pilferers can leave the tab in place and pry the lid open
Solution Approach 1:
The tab is designed to be extracted or removed from the lid structure during the opening process. The perforations are positioned and oriented such that the tab must be pulled through them, creating a permanent gap. This extraction mechanism ensures that the tab cannot remain in place while the lid is pried open, as the tab removal is integral to the lid opening action.
Solution Approach 2:
The tab and perforations are pre-configured in a specific geometric arrangement that prevents bypassing. The perforations are positioned at corners or edges of the lid, and the tab is oriented to block access to these areas, making it impossible to pry the lid open without first removing the tab through the perforations.
Data Source
AI summary
A container having a lid includes a cavity defined by a bottom wall and a first plurality of upstanding sidewalls. A first flange is formed integrally with the first plurality of upstanding sidewalls at their respective uppermost ends and extends outwardly with respect to the cavity. A second plurality of upstanding sidewalls is mounted about the outer periphery of the first flange. A second flange is formed integrally with the second plurality of upstanding sidewalls at their respective uppermost ends and extends outwardly with respect to the cavity. The second flange has a tear tab adapted to be gripped by a user. The tear tab is corner-mounted in a first embodiment and is formed on a leading end of the second flange in a second embodiment. In both embodiments, the tear tab is bordered by perforation lines and clear cut lines and is easily seen if it has been torn.