Acoustic Emission Encoding in Frangible Tape Closures
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Solution Overview
Problem
Existing methods for tracking and validating the opening of containers, such as packaging boxes and sealed bottles, face challenges in accuracy and reliability due to user self-reporting errors and the vulnerability of electronic systems to environmental conditions, cost, and counterfeiting.
Innovation Solution
The use of frangible materials with encoded acoustic emissions, such as adhesive tapes with apertures that produce distinct sounds upon rupture, to encode and transmit data about the contents, including authenticity verification, through non-uniformities in yield strength and reinforcement patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic sensors and communication systems are incorporated into containers to actively report opening events, then accuracy and reliability of data collection are improved, but device complexity, cost, and vulnerability to environmental conditions increase
Solution Approach 1:
The patent replaces electronic sensors and communication systems with a purely mechanical acoustic emission system. A frangible web or closure element mechanically produces acoustic signals when ruptured or deformed during opening, eliminating the need for batteries, processors, and wireless communication hardware while maintaining reliable detection of opening events
Solution Approach 2:
The patent employs disposable frangible web elements and acoustic emitters that are inexpensive to manufacture and discard. These single-use mechanical components replace expensive, complex electronic systems, providing cost-effective opening detection without requiring power sources or sophisticated electronics
2Device complexity
If self-reporting methods are used to track container opening, then device complexity is reduced, but measurement precision and reliability of data accuracy deteriorate
Solution Approach 1:
The patent implements self-reporting through passive acoustic emission. The frangible web or closure element automatically generates acoustic signals when opened, without requiring user action, memory, or recording capabilities. This maintains simplicity while improving precision over active self-reporting methods
Solution Approach 2:
The patent replaces unreliable human memory and manual recording with objective mechanical acoustic emission. The physical rupture or deformation of the frangible web produces consistent acoustic signals that objectively record opening events, eliminating human error in remembering or recording opening times
3Device complexity
If visual inspection methods are used to verify product authenticity, then device complexity is reduced, but reliability of validation accuracy deteriorates due to sophisticated counterfeits
Solution Approach 1:
The patent employs acoustic signal characteristics as a verification code. The specific pattern, frequency, and timing of acoustic emissions from the frangible web or closure element create a unique acoustic signature that is difficult to replicate, providing reliable authenticity verification without visual inspection
Solution Approach 2:
The patent replaces visual inspection with acoustic verification. The mechanical production of acoustic signals through controlled rupture or deformation provides a more secure validation method that is harder to counterfeit than visual features, while maintaining simplicity through passive acoustic emission
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a reliable, cost-effective, and tamper-proof method for tracking container openings and verifying product authenticity, eliminating the need for complex electronics and ensuring accurate data transmission without requiring 'smart' functionality.
Implementation Method 1
the rupturing thereof produces an acoustic emission. The apertures are adapted to incorporate an acoustic sequential nonuniformity into the acoustic emission
Implementation Method 2
The portion exhibits a yield sequential nonuniformity of a yield strength, and is adapted such that the yielding thereof produces an acoustic emission
Data Source
AI summary
“Smart” functionality is provided to “dumb” containers. A closure such as tape is provided with structural nonuniformity, such as holes punched to weaken the material or polymer printing to strengthen the material. Data is encoded in structural nonuniformity, so when the closure is torn, cut, or otherwise yields the data is encoded in the acoustic emission. The structural nonuniformity also may be readable optically or otherwise. Encoded data may include event detection (logging containers opening), package/product information (e.g., lot numbers, contents), validation (e.g., validation codes to distinguish authentic from counterfeit products), and user recognition (e.g., brand jingles, warning sounds). Closures may be made/dispensed with structural nonuniformity in place, and/or structural nonuniformity may be added to closures already securing a portal. Hand-held systems may dispense and/or modify closures with structural nonuniformity.