Porous Membranous Dermal Adhesive for Breathability
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Solution Overview
Problem
Traditional dermal adhesives used in medical patches can cause stuffiness, leading to rash or itch, and have limitations in productivity due to high viscosity, which hinders efficient coating and handling.
Innovation Solution
A porous membranous dermal adhesive formed through irradiation of a radiation-curable resin with radiation rays, incorporating a base sheet and a dermal adhesive composition containing radiation-curable resin, fibrous, and particulate resins, which reduces viscosity and enhances breathability and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional dermal adhesive composition is used, then adhesion function is provided, but viscosity is high which hinders efficient coating and handling
Solution Approach 1:
The patent changes the chemical composition parameters of the adhesive by incorporating radiation-curable resins (acrylate, vinyl ether, or epoxide groups) instead of traditional high-viscosity adhesives. This parameter change enables the adhesive to have low viscosity in uncured state for easy coating and handling, while achieving required adhesion after radiation curing
2Reliability
If traditional dermal adhesive is used, then skin fixation is achieved, but stuffiness causes rash or itch
Solution Approach 1:
The patent creates a porous membrane structure from the radiation-curable adhesive composition. The porous structure provides breathability that prevents stuffiness-related skin issues while maintaining adhesion function for reliable skin fixation
Solution Approach 2:
The patent uses composite material formulation combining radiation-curable resins with specific functional components (polymerizable monomers, oligomers, and optional additives) to achieve both adhesion and breathability properties simultaneously
3Productivity
If radiation-curable resin is used to reduce viscosity, then coating efficiency improves, but porosity and breathability must be maintained
Solution Approach 1:
The patent applies the adhesive composition in uncured state to form the desired porous membrane pattern on the patch substrate before radiation curing. This preliminary action allows precise control of porosity and membrane structure before the adhesive sets, ensuring both breathability and adhesion performance
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 solution reduces stuffiness-related skin issues, improves productivity by decreasing viscosity, and maintains high breathability and adhesion, making it suitable for long-term skin application.
Implementation Method 1
a porous membranous dermal adhesive formed through irradiation of a radiation-curable resin with radiation rays
Data Source
AI summary
Provided are a dermal adhesive composed of a radiation-curable resin and capable of reducing stuffiness that causes rash or itch, a patch including the dermal adhesive, and a method for producing the dermal adhesive. Also provided is a porous membranous dermal adhesive formed through irradiation of a radiation-curable resin with radiation rays. Further provided is a patch including a base sheet and the dermal adhesive disposed on the base sheet. Still further provided is a method for producing a porous membranous dermal adhesive, the method including applying a dermal adhesive composition containing a radiation-curable resin to an adherend so as to form a porous membranous dermal adhesive, and irradiating the dermal adhesive composition with radiation rays.