Shape Memory Polymer Temperature Label with Graded Predeformations
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Solution Overview
Problem
Current temperature indication and anti-counterfeit technologies are costly, complex, and inefficient for real-time monitoring of single products in industries requiring constant temperature environments, and existing shape memory polymer methods are cumbersome in manufacturing due to multiple predeformation treatments at different temperatures.
Innovation Solution
A thermally driven shape memory polymer label with predeformations formed at the same temperature, where the geometrical dimensions of predeformations continuously change along the extension direction, allowing for simple, efficient, and cost-effective temperature indication and anti-counterfeit verification by observing recovery conditions upon heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple predeformation treatments are performed at different temperatures to create temperature indication labels using shape memory polymers, then temperature indication capability is achieved, but manufacturing complexity and production cost increase significantly
Solution Approach 1:
The patent combines multiple predeformation treatments that were previously performed at different temperatures into a single treatment step. By applying one predeformation at a specific temperature that creates multiple recovery temperature levels simultaneously, the manufacturing process is simplified from multiple sequential steps to a single integrated step, reducing complexity while maintaining temperature indication functionality
Solution Approach 2:
The patent changes the parameters of the predeformation treatment by using a single temperature condition that produces predeformations with different recovery characteristics. By controlling the predeformation amount, position, and applied stress at one temperature, multiple temperature indication levels are achieved, eliminating the need for multiple temperature treatments
2Reliability
If multiple predeformation treatments at different temperatures are used to create multilevel anti-counterfeit labels, then authentication reliability is improved, but production efficiency decreases due to cumbersome manufacturing steps
Solution Approach 1:
The patent merges multiple separate predeformation treatment operations into a single integrated process step. By applying predeformation at one temperature condition that simultaneously creates multiple recovery temperature points, the production process becomes more efficient while maintaining the multilevel authentication capability required for reliable anti-counterfeit verification
3Measurement precision
If traditional electronic devices or mechanical structures are used for temperature monitoring, then measurement precision is improved, but cost and ease of manufacture worsen
Solution Approach 1:
The patent employs shape memory polymer-based temperature indication labels that are inexpensive, simple to manufacture, and designed for single-use or limited-use applications. These disposable indicators provide sufficient temperature monitoring precision for their intended purpose while being far easier and cheaper to produce than electronic or mechanical temperature monitoring devices
Solution Approach 2:
The patent replaces complex electronic or mechanical temperature monitoring systems with a passive shape memory polymer-based indication system. The shape memory effect provides inherent temperature sensing capability without requiring electronic components, power sources, or complex mechanical structures, greatly simplifying manufacturing while maintaining adequate measurement precision
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 approach simplifies manufacturing, improves production efficiency, reduces costs, and enhances temperature change sensitivity while providing precise indication of maximum temperatures and authenticity verification.
Implementation Method 1
Many polymer materials have significant shape memory effects, and can sense environment changes and respond to the environment changes in a morphology change (recovering the initial state) manner
Implementation Method 2
The basic method is to form multiple predeformations with different recovery temperatures at different temperatures above the initial glass transition temperature or melting transition temperature of the shape memory polymer
Data Source
AI summary
The present invention relates to temperature detection and indication technology and anti-counterfeit indication technology, and particularly to a temperature indication or multilevel anti-counterfeit indication label and a temperature indication or multilevel anti-counterfeit indication method based on a shape memory polymer. The temperature indication or multilevel anti-counterfeit indication label based on the shape memory polymer includes a matrix of a thermally driven shape memory polymer material, and one or more predeformations are formed on the matrix; the predeformation is formed in one or more stress processes at the same temperature; when multiple predeformations are formed, the sizes of the multiple predeformations are different; and when one predeformation is formed, the geometrical dimension of the predeformation continuously changes along the extension direction of the predeformation.