Tamper-Evident Closure with Non-Rotatable Outer Shell
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Solution Overview
Problem
Existing caps and closure assemblies with tamper-evident features lack improvements in ensuring the integrity of contents within containers, particularly in preventing unauthorized access and maintaining secure stacking configurations.
Innovation Solution
A tamper-evident closure assembly featuring a cap with a non-rotatable outer shell and a tamper-evidencing member that breaks upon removal, allowing for secure stacking and indicating if the cap has been opened, with features like frangible connections and annular beads for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cap is made rotatable on the container, then it is easier to open and close, but it cannot provide secure stacking configuration
Solution Approach 1:
The closure assembly is divided into two main segments: a rotatable cap for easy opening/closing operations and a non-rotatable outer shell for secure stacking. The cap can rotate independently on the container neck while the outer shell remains fixed relative to the container, allowing both functionalities to coexist without interference.
Solution Approach 2:
The cap is nested within the outer shell structure, with the cap able to rotate independently inside the non-rotatable outer shell. This nested configuration allows the inner rotating cap to provide ease of operation while the outer shell maintains the secure stacking configuration.
2Reliability
If a tamper-evidencing member is added to indicate cap removal, then product integrity can be monitored, but device complexity increases
Solution Approach 1:
The tamper-evidencing member is constructed as a thin, flexible band that can be easily integrated into the closure assembly structure. This thin-film approach provides reliable tamper indication through simple visual inspection while minimizing the increase in device complexity.
Solution Approach 2:
The tamper-evidencing band utilizes color changes or visual indicators to signal whether the cap has been removed. When the cap is removed, the band becomes visible or changes appearance, providing clear tamper evidence without requiring complex mechanical or electronic systems.
3Stability of the object's composition
If an outer shell is added to prevent rotation, then secure stacking is achieved, but manufacturing complexity increases
Solution Approach 1:
The outer shell is merged with the container structure, where the shell and container are designed to fit together as an integrated unit. This merging approach achieves the non-rotatable configuration and secure stacking capability while simplifying the manufacturing process by reducing the number of separate components that need to be assembled.
Data Source
AI summary
A tamper-evident closure assembly for a container having an opening includes a cap configured to be secured with the container to cover the opening. A tamper-evidencing member is carried by the cap and is configured to provide an indication when the cap is removed from the container. The closure assembly further includes an outer shell having a central aperture through which the cap is received. The outer shell and the cap may be configured to cooperate with each other such that the cap is operatively secured to, and mounted so as to be non-rotatable relative to, the outer shell. Systems for storing material and methods of closing a container and assembling a closure assembly are also provided.