Multi-layered Barrier Patch with Foamed Polymer for Skin Care
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Solution Overview
Problem
Conventional cosmetic patches are often uncomfortable to wear due to their opaque, dry, and impermeable nature, leading to ineffective delivery of skin active agents and a poor user experience.
Innovation Solution
A multi-layered barrier patch comprising a non-foamed and foamed polymer film layer with a specific Mean Void Volume Percentage and thickness, providing occlusion and breathability while maintaining flexibility and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the patch is made opaque and impermeable, then skin active agents are delivered effectively, but the patch becomes uncomfortable and heavy to wear
Solution Approach 1:
The patch incorporates different layers with different optical properties: a foamed layer providing breathability and comfort, and a non-foamed layer providing occlusion and active ingredient delivery. This local differentiation allows the patch to have both breathable and occlusive properties in different regions.
Solution Approach 2:
The patch uses a composite structure combining foamed and non-foamed polymer layers. The foamed layer provides vapor permeability and comfort, while the non-foamed layer provides liquid impermeability and occlusion, creating a material system that exhibits both breathable and occlusive properties simultaneously.
2Adaptability or versatility
If the patch is made thin and flexible, then it conforms to skin contours, but it becomes prone to wrinkling in use
Solution Approach 1:
The patent employs a thin film structure (5-250 microns) that is flexible enough to conform to facial contours while maintaining sufficient structural integrity through the multi-layer construction to resist wrinkling during use.
Solution Approach 2:
The multi-layer composite structure provides enhanced dimensional stability compared to a single thin layer, allowing the patch to remain thin and flexible while resisting wrinkling through the combined mechanical properties of the foamed and non-foamed layers.
3Ease of operation
If breathable materials are used, then comfort is improved, but the patch allows self-drying of actives
Solution Approach 1:
The patch designates specific layers for specific functions: the foamed layer handles vapor transmission for comfort, while the non-foamed layer maintains liquid barrier properties to prevent active ingredient drying, creating localized functional zones within the single patch structure.
Solution Approach 2:
The patch is segmented into functionally distinct foamed and non-foamed layers, allowing independent optimization of each layer's properties - the foamed layer maximizes breathability while the non-foamed layer maximizes occlusion, with both working together in the integrated patch system.
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 patch effectively delivers skin active agents while offering a comfortable and breathable experience, enhancing user satisfaction and the efficacy of skin care treatments.
Implementation Method 1
a foamed second layer comprising a foamed polymer film comprising a Mean Void Volume Percentage from about 45% to about 80%
Implementation Method 2
a method of delivering cosmetic compositions to a target area of the skin via the use of a barrier patch
Data Source
Figure 1~3
Figure 4~9
AI summary
A beauty care product is provided. The beauty care product has a multi-layered barrier patch with a non-foamed first layer and a foamed second layer. The non-foamed first layer has a non-foamed polymer film with a first surface and a thickness from 5 microns to 250 microns. The foamed second layer has a foamed polymer film comprising a Mean Void Volume Percentage from 45% to 80% and a thickness of from 10 microns to 250 microns. The beauty care product also has a cosmetic composition with an effective amount of a skin active agent and a pressure sensitive adhesive.