Foamed Barrier Patch for Skin Active Agent Delivery
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Solution Overview
Problem
Conventional cosmetic patches are often uncomfortable due to their opaque, impermeable, and stiff nature, leading to ineffective delivery of skin active agents and a poor user experience, as they can feel heavy and tight, and may dry out, reducing their occlusive benefits.
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 flexibility and occlusion while maintaining the delivery of skin active agents, and featuring a pressure-sensitive adhesive for comfortable wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the patch is made opaque and impermeable, then occlusion and protection are improved, but comfort and breathability deteriorate
Solution Approach 1:
The patent introduces a breathable film layer with controlled porosity that allows vapor transmission while blocking liquid. This porous structure enables the patch to maintain occlusion benefits for active ingredient delivery while permitting skin respiration, thereby resolving the contradiction between occlusion reliability and wearing comfort
Solution Approach 2:
The patent employs a composite structure combining impermeable adhesive layers with a breathable film layer. This multi-material composition allows different regions of the patch to perform different functions: the adhesive layers provide occlusion and active ingredient delivery, while the breathable film layer provides vapor permeability and comfort, thus resolving the contradiction between occlusion and comfort
2Ease of operation
If the patch is made thin and flexible, then comfort and conformability are improved, but structural stability and delivery efficacy deteriorate
Solution Approach 1:
The patent divides the patch into multiple functional layers, each with optimized thickness and properties. The breathable film layer is kept thin for flexibility and vapor permeability, while the adhesive layers contain the active ingredients and provide structural support for delivery efficacy. This segmentation allows each layer to be optimized independently, resolving the contradiction between flexibility and delivery reliability
3Ease of operation
If the patch is made breathable, then comfort is improved, but drying out and loss of occlusive benefits worsen
Solution Approach 1:
The breathable film layer acts as an intermediary between the skin and the external environment. It selectively permits vapor transmission for comfort while blocking liquid loss that would cause drying out. This intermediary layer maintains the occlusive benefits needed for active ingredient delivery while providing the breathability needed for comfort, thus resolving the contradiction between comfort and substance loss
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 offers a comfortable, breathable, and effective delivery of skin active agents, enhancing user satisfaction by maintaining the occlusive benefits and preventing drying out, thus improving skin appearance and treatment efficacy.
Implementation Method 1
a foamed second layer comprising a foamed polymer film comprising a Mean Void Volume Percentage from about 45% to about 80%
Data Source
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.