Renewable Skin Care Composition for Absorbent Articles
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Solution Overview
Problem
Current skin care compositions for absorbent articles, derived from non-renewable petroleum sources, face challenges in stability and transfer efficiency, often being too mobile at higher temperatures, leading to migration within the article and inadequate skin protection, while being too immobile at ambient temperatures, resulting in insufficient skin care benefits.
Innovation Solution
A skin care composition for absorbent articles comprising 40% to 90% emollients and 10% to 60% immobilizing agents, both derived from renewable resources, with a DSC Percent Melt at 50°C between 10% to 50%, ensuring stability and effective transfer to the skin without excessive migration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If skin care composition uses renewable resources (plant-based emollients), then environmental sustainability and consumer preference are improved, but the composition becomes too mobile at higher temperatures causing migration within the article
Solution Approach 1:
The patent combines plant-based emollients (renewable resources) with waxes and fatty alcohols to create a composite skin care composition. This composite structure allows the formulation to maintain renewable resource benefits while achieving temperature stability through the synergistic interaction of different natural components, preventing migration at elevated temperatures.
Solution Approach 2:
The patent modifies the physical and chemical parameters of the skin care composition by adjusting the ratios of emollients, waxes, and fatty alcohols. By changing these compositional parameters, the formulation achieves optimal viscosity and melting point characteristics that prevent migration at storage temperatures while maintaining transferability at skin temperature.
2Adaptability or versatility
If skin care composition uses renewable resources, then petroleum-based materials are reduced, but the composition becomes too immobile at ambient temperatures resulting in insufficient transfer to skin
Solution Approach 1:
The patent carefully adjusts the compositional parameters, specifically the balance between solid waxes and liquid emollients, to achieve the optimal melting point range (37-65°C). This parameter optimization ensures the composition remains solid at ambient temperature (preventing migration) but becomes sufficiently mobile at skin temperature (enabling transfer).
Solution Approach 2:
The skin care composition exhibits dynamic behavior where its physical state changes with temperature. At storage temperatures, the composition maintains a solid, stable structure. At skin temperature, it transitions to a more mobile state that facilitates transfer to the wearer's skin, providing temperature-dependent functionality.
3Ease of operation
If skin care composition is made mobile to enable transfer to skin, then skin care benefits are improved, but migration within the article occurs during packaging and transit
Solution Approach 1:
The patent utilizes phase transition principles by formulating the skin care composition with a melting point range (37-65°C) that is above ambient storage temperature but below or near skin temperature. This phase transition approach ensures the composition remains in a stable solid phase during storage and transit, preventing migration, while transitioning to a mobile liquid phase at skin temperature to enable transfer.
Solution Approach 2:
The patent incorporates waxes and fatty alcohols as stabilizing agents that preemptively prevent migration during storage and transit. These ingredients act as a cushioning mechanism that maintains structural integrity under various storage conditions, ensuring the composition is ready for effective transfer when applied to the skin without prior migration issues.
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 composition provides a stable and effective skin care solution that maintains adequate barrier functionality and transfer efficiency, minimizing migration within the article, even under extreme temperatures, thus enhancing skin protection and user experience.
Implementation Method 1
the skin care composition has a DSC Percent Melt at 50°C from about 10% to about 50%
Implementation Method 2
a DSC Percent Melt at 50°C
Data Source
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AI summary
An absorbent article comprising a substantially water-free skin care composition comprising from about 40% to about 90% by weight of at least one emollient derived from a renewable resource and from about 10% to about 60% by weight of at least one immobilizing agent derived from a renewable resource; wherein the skin care composition has a DSC Percent Melt at 50C from about 10% to about 50%.