Moisture regulating element for use in packaging
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Solution Overview
Problem
Existing packaging technologies fail to effectively regulate moisture levels, leading to high relative atmospheric humidity that promotes mold growth and affects the quality of food and other moisture-sensitive products, while also causing condensation that impairs visual appearance and shelf life.
Innovation Solution
A moisture-regulating element comprising a layer of pulp fibres with integrated moisture-regulating means, such as inorganic salts, sugars, or super-absorbent polymers, that can absorb or release moisture to maintain optimal humidity levels, preventing mold growth and extending shelf life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packaging is used to protect foodstuffs against drying out, then the quality and shelf life are improved, but the relative atmospheric humidity increases which promotes mold growth and deteriorates product quality
Solution Approach 1:
The patent applies parameter changes by using moisture-regulating means that dynamically adjust the humidity parameter within the packaging. These means can absorb moisture when humidity is too high and release moisture when humidity is too low, maintaining optimal humidity levels (typically 40-60% relative humidity) to prevent both mold growth and drying out of foodstuffs
Solution Approach 2:
The patent introduces an intermediary substance (moisture-regulating means) between the foodstuff and the external environment. This intermediary actively manages moisture transfer, absorbing excess moisture from the packaging atmosphere to prevent mold growth while preventing excessive moisture loss from the foodstuff, thus mediating between the conflicting requirements of preventing both drying out and mold growth
2Reliability
If moisture-regulating means are incorporated into the packaging, then humidity control is improved, but the device complexity increases
Solution Approach 1:
The patent employs disposable moisture-regulating means that are inexpensive and can be easily integrated into standard packaging. These means are typically single-use components that are discarded with the packaging after use, eliminating the need for complex recovery or regeneration systems and keeping the overall device complexity low
Solution Approach 2:
The patent uses composite materials that combine moisture-regulating functionality with structural packaging materials. The moisture-regulating means may be integrated into cardboards, papers, or plastic layers, creating multi-functional composite packaging structures that provide both mechanical protection and humidity control without requiring separate complex systems
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 moisture-regulating element effectively maintains optimal humidity, preventing mold growth and extending the shelf life of foodstuffs and other products by controlling moisture levels, thereby improving their visual and tactile properties.
Implementation Method 1
The means used can also give up the bound water again when the moisture content becomes too low (in relation to the capability of the means used to bind water); in this case moisture is given up to the air, i. e. the means is dewatered. A balance between the means and the surrounding is achieved.
Implementation Method 2
The moisture can be adsorbed (hydration) or given up (dewatering).
Data Source
AI summary
A moisture-regulating element for use in packaging is claimed, which comprises a layer of pulp fibres and optionally further layers, characterized in that the element contains means which are able to regulate the moisture content.The moisture-regulating element may be used in packaging for the transport and other storage of moisture-sensitive products or can serve as such, in order to store these products under optimal moisture conditions.