Electrostatic Spray Wearable Coating for Skin Stability
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Solution Overview
Problem
Existing methods for applying wearable articles to skin surfaces often cause pressure or discomfort and are not compatible with skin movements, lacking stability and adhesiveness.
Innovation Solution
A method involving the placement of solid materials on the skin followed by electrostatic spraying of a composition containing volatile substances and a polymer, and the application of an adhesive polymer and oil to form a wearable coating that is stable, comfortable, and compatible with skin movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a paint or solid material is applied directly to the skin surface, then the wearable article can be attached to the skin, but the coating lacks stability and adhesiveness, causing discomfort and incompatibility with skin movements
Solution Approach 1:
The patent applies a primer composition containing adhesive polymer and oil to the skin surface before applying the solid material or paint. This preliminary action creates an adhesive base layer that enhances the stability and bonding of the subsequent coating, preventing discomfort and incompatibility with skin movements.
Solution Approach 2:
The patent uses a composite coating system consisting of multiple layers: a primer layer containing adhesive polymer and oil, followed by a topcoat layer containing volatile substance and polymer. This composite structure provides both strong adhesion to skin and flexibility to accommodate skin movements, resolving the contradiction between stability and comfort.
2Reliability
If a pressure-sensitive adhesive sheet is used to affix printed seal on skin, then the wearable article can be attached securely, but it causes pressure feeling and uncomfortable feeling to skin
Solution Approach 1:
The patent changes the physical and chemical parameters of the adhesive system by using a composition containing adhesive polymer and oil applied in a specific manner. This creates a flexible adhesive layer that bonds securely to skin without causing pressure discomfort, unlike rigid pressure-sensitive adhesive sheets.
3Reliability
If a coating is applied to fix solid materials on skin, then the wearable article remains stable, but it may cause irritation or water-induced peeling
Solution Approach 1:
The patent introduces an intermediary composition containing adhesive polymer and oil that acts as a protective barrier between the solid material/paint and the skin. This intermediary layer provides stability and fixation while preventing direct contact that could cause irritation or water-induced peeling.
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 method securely fixes decorations and paints on the skin without pressure or discomfort, ensuring excellent compatibility with skin movements and easy peelability, while preventing irritation and water-induced peeling.
Implementation Method 1
a step of, after the step A), electrostatically spraying a composition X comprising the following component (a) and the following component (b) directly on the skin to thereby form a coating on the skin surface
Implementation Method 2
component (a) one or more volatile substances selected from the group consisting of water, an alcohol, and a ketone
Data Source
AI summary
A method for producing a wearable coating having a solid material fixed on skin, the method comprising: A) a step of placing one or more solid materials selected from the group consisting of a powder, a granule, a film, a fiber, a flat material, and a cubic material other than these, on a skin surface; B) a step of, after the step A), electrostatically spraying a composition X comprising the following component (a) and the following component (b) directly on the skin to thereby form a coating on the skin surface: (a) one or more volatile substances selected from the group consisting of water, an alcohol, and a ketone, and (b) a polymer having a coating forming ability; and after the step B) or before the step A), C) a step of applying a composition Y, other than the composition X, comprising one or more components selected from the group consisting of the following component (c) and the following component (d) to the skin: (c) an adhesive polymer, and (d) an oil.