Ready-to-Eat Food Packaging With Inert Atmosphere and Layered Ingredients
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Solution Overview
Problem
Pre-packaged, ready-to-eat foods often sacrifice quality and shelf life due to packaging considerations, lacking an extended shelf life and maintaining high-quality, fresh ingredients.
Innovation Solution
A cylindrical container with a gas permeable membrane and controlled inert gas atmosphere, combined with a specific order of food items, maintains freshness and extends shelf life by up to 40% compared to conventional packaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional packaging is used for ready-to-eat foods, then ease of packaging and transport is improved, but shelf life and ingredient quality deteriorate
Solution Approach 1:
The patent applies inert atmosphere packaging by replacing oxygen with nitrogen gas in the container headspace. This prevents oxidative degradation of fresh ingredients while maintaining package integrity for transport. The nitrogen atmosphere extends shelf life by inhibiting aerobic spoilage organisms and preventing color degradation, directly resolving the contradiction between ease of packaging and extended shelf life.
Solution Approach 2:
The patent uses a flexible lid that seals over the container opening, creating a hermetic seal that maintains the inert atmosphere during transport and storage. This flexible sealing mechanism provides ease of packaging while preventing gas exchange that would compromise shelf life, thus resolving the technical contradiction.
2Device complexity
If conventional packaging is used for ready-to-eat foods, then packaging simplicity is improved, but ingredient quality deteriorates
Solution Approach 1:
The patent employs nitrogen flushing to create an oxygen-free atmosphere that preserves ingredient quality by preventing oxidation and microbial growth. This relatively simple inert atmosphere approach maintains high ingredient quality without requiring complex packaging structures, resolving the contradiction between packaging simplicity and ingredient quality preservation.
Solution Approach 2:
The patent changes the gas composition parameter within the package by replacing atmospheric oxygen with nitrogen. This parameter change (from 21% oxygen to <1% oxygen) dramatically improves ingredient quality and shelf life while maintaining packaging simplicity, thus resolving the technical contradiction.
3Reliability
If refrigeration is used to maintain freshness, then ingredient quality is improved, but shelf life remains limited
Solution Approach 1:
The patent combines refrigeration with nitrogen atmosphere packaging to achieve synergistic preservation. The inert atmosphere prevents oxidative degradation and inhibits aerobic spoilage organisms, extending the effective shelf life beyond what refrigeration alone can achieve. This combination maintains freshness while significantly extending duration, resolving the technical contradiction.
Solution Approach 2:
The patent creates a composite preservation system combining cold temperature (refrigeration) with chemical atmosphere modification (nitrogen gas). This composite approach provides enhanced preservation effectiveness and extended shelf life compared to either method alone, resolving the contradiction between freshness maintenance and shelf life extension.
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 container maintains food freshness for at least 10 days with reduced spoilage, providing a healthy meal option with high-quality ingredients.
Implementation Method 1
A gas permeable membrane covers the opening and is attached to the sidewall to promote and extend freshness and edible life of the food items
Implementation Method 2
one or more inert gases are contained within the central space of the container. The inert gases may include carbon dioxide or nitrogen or combinations thereof
Data Source
AI summary
Packaged food items, such as a fresh, ready to eat salad, comes in a container maintaining a substantially inert, low pressure atmosphere therein. The salad includes a salad dressing positioned lowermost in the container and a lettuce item positioned upper most in the container. Various additional food items are positioned within the container between the salad dressing and the lettuce item. The additional food items include pickled, raw or cooked vegetable items, grain or pasta items, protein items and cheese items. All of the food items are present in different measured proportions depending on the combination of items in the container. The additional food items are layered in a particular order also dependent upon the combination of items present in the container.