Tamper Evident Bag Visual Indicator Design
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Solution Overview
Problem
Existing security bags lack sufficient tamper evidence, making it difficult to determine if unauthorized access has occurred, and are often expensive to manufacture and require intense concentration to seal and verify properly.
Innovation Solution
A tamper evident security bag with visual indicators on the bag and seal that are identical or associated with each other, providing clear evidence of unauthorized access through codes, holograms, or other designs, and an adhesive seal that prevents premature adhesion and reveals tampering attempts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specialized adhesive tapes are used to secure the security bag, then the bag can be sealed, but the tamper evidence capability is insufficient and manufacturing cost increases
Solution Approach 1:
The patent applies color-changing visual indicators that display a first color when intact and a second color when tampered with. The bag indicator and seal indicator use complementary color schemes (e.g., green/white and red/black) to provide clear visual distinction between sealed and tampered states, eliminating the need for expensive specialized adhesive tapes while maintaining reliable tamper evidence.
Solution Approach 2:
The invention uses inexpensive visual indicator materials such as printed color codes, holograms, or embossed patterns on the bag and seal components. These indicators are designed as single-use elements that provide reliable tamper evidence at low cost, replacing expensive specialized adhesive tapes with affordable alternative materials.
2Manufacturing precision
If intense concentration is applied to seal and verify the security bag, then effective sealing can be achieved, but the operation becomes complex and time-consuming
Solution Approach 1:
The visual indicators are designed to automatically display their status without requiring operator interpretation or concentration. The color-coded system (first color = sealed, second color = tampered) provides self-evident information that eliminates the need for intense concentration to verify sealing effectiveness, while maintaining simple sealing operations.
Solution Approach 2:
The patent employs color-changing indicators that automatically change appearance based on the sealed or tampered state. This visual feedback mechanism eliminates the need for complex verification procedures or intense concentration, as the sealing status is immediately apparent through color differentiation, thereby simplifying operation while maintaining precision.
3Ease of operation
If visual indicators are made visible under naked eye, then ease of verification improves, but the technology available for creating such indicators is limited
Solution Approach 1:
The patent utilizes color-changing visual indicators visible to the naked eye, employing techniques such as printed color codes, holograms, embossed patterns, or thermal transfer printing. These methods provide clear visual verification under normal lighting conditions without requiring complex technological systems, balancing verification ease with manageable technical complexity.
Data Source
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AI summary
The invention relates to security bags and in particular, to a tamper evident bag (10). The tamper evident bag includes a security bag (12) which has at least one opening (14) and is provided with a bag visual indicator (16a). The tamper evident bag (10) further includes a seal (18) for securely closing the at least one opening (14) of the security bag (12). The seal (18) is provided with a seal visual indicator (20) which is associated with the bag visual indicator (16a), such that unauthorized access to the security bag (12) is evident when the seal (18) has been tampered with. The invention extends to a tamper evident kit which includes a security bag (12) and a separate seal (18).