Temperature-Sensitive Identification Tag for Food Spoilage Detection
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Solution Overview
Problem
During food transportation and storage, it is challenging to ensure that products are maintained at the required refrigerated or frozen temperatures, especially during categorizing and delivery processes where temperature control may not be strictly enforced, leading to potential spoilage.
Innovation Solution
An identification tag is designed to be attached to products, featuring a bag body with a chamber containing a temperature-sensitive identification substance that changes state (solid to liquid) in response to temperature variations, causing the bag body to crack and allowing the substance to leak, thereby visually indicating improper temperature storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If temperature control is not strictly enforced during categorizing and delivery processes, then operational flexibility is improved, but product spoilage risk increases
Solution Approach 1:
The identification substance undergoes phase change in advance during frozen storage, creating cracks in the bag body beforehand. This preliminary action prepares the indicator system so that when temperature abuse occurs later during delivery or categorizing, the liquid identification substance can immediately leak out and provide visible warning, enabling quick detection without continuous monitoring during critical transport phases.
Solution Approach 2:
The identification tag acts as an intermediary indicator system between the product and the monitoring staff. The phase-changing identification substance serves as a mediator that translates temperature conditions into visible signals (crack formation and liquid leakage), allowing staff to easily identify temperature-abused products without requiring complex temperature logging equipment or continuous active monitoring during delivery and categorizing processes.
2Reliability
If continuous temperature monitoring is implemented, then product freshness is ensured, but operational complexity increases
Solution Approach 1:
The identification tag is self-service in that it automatically indicates temperature abuse conditions without requiring external power sources, electronic sensors, or active monitoring systems. The phase-changing identification substance autonomously responds to temperature conditions by changing state and causing visible leakage, providing self-monitoring capability that eliminates the need for complex electronic temperature logging devices or continuous electronic surveillance during delivery and storage.
Solution Approach 2:
The identification tag uses a simple, inexpensive disposable structure with a bag body containing phase-changing material. Rather than implementing expensive, reusable electronic monitoring systems that require power sources, data storage, and complex retrieval processes, this invention employs simple visual indicators that provide sufficient information for quality control decisions without requiring ongoing maintenance or complex infrastructure.
3Productivity
If visual identification methods are used, then detection speed is improved, but measurement precision decreases
Solution Approach 1:
The identification substance changes its physical state from solid to liquid in response to temperature conditions, creating distinct visual differences. When the substance leaks out due to bag body cracking caused by phase expansion during improper thawing, it provides clear visual indication through color and state changes. This allows rapid visual detection by staff while the specific freezing point of the identification substance provides precise temperature threshold detection, combining both speed and accuracy.
Solution Approach 2:
The identification substance utilizes phase transition between solid and liquid states as a detection mechanism. During proper frozen storage, the substance remains solid and contained. When temperature abuse occurs and the substance melts, it leaks through cracks in the bag body, providing immediate visual warning. The phase transition occurs at a specific temperature threshold, enabling both rapid visual detection and precise temperature deviation identification.
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
The identification tag effectively communicates temperature deviations by visual changes, allowing staff to identify and remove products that have not been stored at the appropriate temperature, thereby preventing spoilage and ensuring product freshness.
Implementation Method 1
The identification substance is changeable between two different states. When the identification substance is changed from one of the states to the other of the states, the identification substance has a volume increase and causes at least one crack on the bag body
Implementation Method 2
When the identification substance is changed from one of the states to the other of the states, the identification substance has a volume increase
Implementation Method 3
when the identification tag is in the second temperature lower than the freezing point of the identification substance, the identification substance has a volume increase to cause at least one crack on the bag body. As such, once the product with the identification tag is preserved in the first temperature higher than the freezing point of the identification substance during the delivery or storage of the product, the identification substance melt to be in the liquid state so as to leak out of the bag body from the crack
Data Source
AI summary
The disclosure provides an identification tag including a bag body, an identification substance, and an identification component. The bag body is configured to be disposed on a product, and has a chamber. The identification substance is stored in the chamber. The identification substance is colored, and the state of the identification substance is changeable with temperature. When the identification substance is changed from one of the states to the other of the states, the identification substance has a volume increase and causes at least one crack on the bag body, wherein the at least one crack is connected to the chamber.