Tamper-Evident Container Tabbed Hinge Design
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Solution Overview
Problem
Current tamper-evident containers lack a secure mechanism to indicate if the contents have been accessed without leaving visible signs of tampering, making it difficult to ensure the integrity of stored food products during transportation and storage.
Innovation Solution
The design incorporates a tamper-evident tab that, when pulled, separates the lid from the base by tearing along pre-defined weakened regions, providing a clear indication of access while maintaining the container's integrity until opened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tamper-evident mechanism is added to indicate content access, then the security and integrity indication is improved, but the device complexity increases
Solution Approach 1:
The hinge is divided into a first portion attached to the lid and a second portion attached to the base, with a tab connecting these portions. This segmentation allows the tamper-evident mechanism to provide clear visual indication of container opening while maintaining a relatively simple overall structure.
Solution Approach 2:
The hinge is pre-configured with weakened regions that allow it to break at specific locations when the container is opened. This preliminary preparation ensures that tamper evidence is automatically generated during the normal opening process without requiring additional complex mechanisms.
2Reliability
If the hinge is made secure to prevent opening, then the container security is improved, but the ease of operation deteriorates
Solution Approach 1:
The hinge has different properties in different locations: the weakened regions are designed to break easily during opening, while the fold line maintains sufficient strength for normal hinge operation. This local differentiation allows the hinge to be both secure and easy to open.
Solution Approach 2:
The hinge structure incorporates regions with different structural parameters - the weakened regions have reduced material thickness or strength to facilitate breaking, while the fold line maintains adequate strength for repeated opening and closing operations.
Data Source
AI summary
A tamper-evident container includes a base and a lid. A base extension and a lid extension are connected to a hinge to join the base and the lid together in a closed, pre-use configuration. A tab extends from either the lid extension or the base extension in a direction away from the lid and the base such that the tab extends beyond the hinge. The tab is joined to one of the extensions via weakened regions that can be torn when the tab is pulled to indicate that the container has been tampered with or opened.