Tamper-Evident Container Tabs for Easy Opening and Clear Breach Indication
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Solution Overview
Problem
Existing plastic containers with security measures are expensive, difficult to open, and prone to breakage, lacking a reliable way to indicate unauthorized opening.
Innovation Solution
A tamper evident container design featuring a box with a first tab and a lid connected by a second tab, where the second tab has a weaken line allowing easy opening while ensuring the lid engages securely with the box, using a recess and protrusion mechanism for alignment and engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security measures are added to plastic containers to prevent unauthorized opening, then the ability to identify tampering is improved, but the cost increases and the container becomes more difficult to open
Solution Approach 1:
The security system is segmented into distinct functional components: the first tab remains attached to the box, the second tab remains attached to the lid, and the weaken line connects them. This segmentation allows the container body to remain intact while the tab connection provides tamper evidence, resolving the contradiction between security reliability and ease of opening.
Solution Approach 2:
The weaken line is designed with specific structural parameters (reduced thickness, narrowed width) that change its mechanical properties compared to the rest of the tab. This parameter change ensures the weaken line breaks at a predictable location under normal opening forces, providing tamper evidence while maintaining ease of opening for authorized users.
2Reliability
If traditional security measures are used to prevent container opening, then tamper identification is improved, but the container structure becomes more complex and expensive
Solution Approach 1:
The security function is merged with the existing container structure by integrating the tabs directly into the box and lid assemblies. The first tab is formed as part of the box structure, and the second tab is formed as part of the lid structure, eliminating the need for separate security devices and reducing overall complexity.
Solution Approach 2:
The tabs serve multiple functions: they provide structural connection between lid and box, enable tamper evidence through the weaken line design, and facilitate easy opening for authorized users. This multi-functionality reduces the need for additional specialized security components, simplifying the overall device.
3Reliability
If secure closing mechanisms are added to prevent unauthorized opening, then security reliability is improved, but manufacturing cost increases
Solution Approach 1:
The container structure is designed to be self-servicing for security functions. The weaken line automatically provides tamper evidence when the container is opened, without requiring external monitoring systems, electronic components, or complex locking mechanisms. This self-service approach reduces manufacturing costs while maintaining security reliability.
Data Source
AI summary
A tamper evident container includes a box and a lid. The box has a bottom, an annular wall projected from bottom, and a box flange projected from the annular wall. A first tab is connected to the box flange. The lid has a cover piece and a lid flange. A second tab is connected to the lid flange. The second tab has a root section, a neck section and a head section in sequence, wherein a width of the second tab is gradually decreased from the root section to the neck section, and then is gradually increased from the neck section to the head section. The second tab has a portion connected to the first section, on which a weaken line is provided.