Optimized Plastic Packaging for Perishable Product Shelf-Life
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Solution Overview
Problem
The use of recycled and bio-plastics in packaging is hindered by contaminant loads, high costs, and variability in composition, making it difficult to predict their effectiveness in extending the shelf-life of perishable products, as they often result in reduced vitamin content and increased product degradation due to light haze and filtering effects.
Innovation Solution
A method and system for optimizing plastic compositions by blending resin feedstocks based on measured properties such as radiation absorption, transmission, and fluorescence, using sensors and a computing device to adjust the ratio of feedstocks and add additives, thereby enhancing the light filtering and nutritive retention properties of the final plastic product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If recycled and bio-plastic materials are used in packaging, then sustainable and eco-friendly packaging is achieved, but the composition variability and contaminant loads make it difficult to predict effectiveness in extending shelf-life
Solution Approach 1:
The patent applies parameter changes by systematically varying the ratios of different resin feedstocks (recycled PET, virgin PET, bio-based polymers) and adjusting processing parameters during extrusion to achieve consistent optical properties. This allows the formulation to compensate for composition variability in recycled materials while maintaining reliable shelf-life extension effectiveness through controlled light filtering properties.
Solution Approach 2:
The patent uses composite materials by creating multi-component plastic formulations that combine recycled PET, virgin PET, and bio-based polymers in specific ratios. This composite approach allows the benefits of sustainable materials to be achieved while maintaining consistent performance through the synergistic combination of different material properties, particularly for light absorption and filtration.
2Reliability
If recycled plastic materials are used, then sustainable packaging is achieved, but light haze and filtering effects increase, reducing vitamin content and increasing product degradation
Solution Approach 1:
The patent applies local quality by targeting specific wavelength ranges of light for filtration while allowing other wavelengths to pass through. The formulation is designed to absorb harmful UV and blue light wavelengths that cause vitamin degradation, while maintaining transparency in the visible spectrum to preserve product appearance and consumer appeal.
Solution Approach 2:
The patent utilizes color changes by incorporating resin feedstocks and additives that provide selective light absorption in the UV and blue spectrum. This creates a functional optical property where the packaging material appears transparent or translucent to consumers but simultaneously filters detrimental wavelengths that cause nutrient degradation.
3Reliability
If the ratio of resin feedstocks is adjusted to optimize light filtering properties, then shelf-life is extended, but the manufacturing process complexity increases
Solution Approach 1:
The patent applies feedback by implementing real-time monitoring of optical properties during the extrusion process and using this information to dynamically adjust the resin feedstock ratios. This closed-loop control system automatically compensates for variations in recycled material composition, achieving consistent light filtering performance without requiring complex manual intervention or formulation adjustments.
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 increases the shelf-life and perceived freshness of vegetables by optimizing the plastic composition to block detrimental light wavelengths, reducing nutrient degradation, and maintaining higher vitamin content, thus addressing the limitations of traditional recycled and bio-plastic packaging materials.
Implementation Method 1
One or more properties of the plastic composition, including radiation absorption, radiation transmission, gas evolution, fluorescence, or melting properties, are measured
Implementation Method 2
One or more properties of the plastic composition, including radiation absorption, radiation transmission, gas evolution, fluorescence, or melting properties, are measured
Implementation Method 3
The plurality of resin feedstocks are blended to form the plastic composition
Data Source
AI summary
The present invention relates to relates to a method of optimizing a plastic composition formed from a plurality of resin feedstocks. A plurality of resin feedstocks are provided. The plurality of resin feedstocks are blended to form the plastic composition. One or more properties of the plastic composition, including radiation absorption, radiation transmission, gas evolution, radiation fluorescence, or melting properties, are measured. The ratio of the plurality of resin feedstocks being blended into the plastic composition is adjusted, based on said measuring, to form an optimized plastic composition. A system for performing the method is also disclosed.