Electrostatic Spray Coating Composition for Skin
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Solution Overview
Problem
Existing electrostatic spray methods for forming coating films on the skin suffer from inadequate adhesion, scratch resistance, and peelability, and do not provide optimal skin compatibility and feel.
Innovation Solution
A composition comprising a polymer with coating film-forming ability, a volatile substance, a plasticizer, and a feel modifier is used in an electrostatic spray to create a coating film with enhanced adhesion, scratch resistance, and ease of peeling, while maintaining skin compatibility and a favorable feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional electrostatic spray methods are used with basic composition, then the coating film can be formed on the skin, but the adhesion and scratch resistance of the coating film are insufficient
Solution Approach 1:
The patent modifies the chemical composition parameters by incorporating specific polymers (acrylic acid, methacrylic acid, and their copolymers), plasticizers (glycerin, propylene glycol, butylene glycol), and feel modifiers (silicone oils, fatty acid esters) to optimize the coating film's adhesion and scratch resistance properties
Solution Approach 2:
The invention creates a composite coating film system by combining multiple functional components: film-forming polymers provide structural integrity, plasticizers enhance flexibility and adhesion, and feel modifiers improve skin compatibility and tactile properties, resulting in a coating film with superior mechanical strength and reliability
2Strength
If the coating film is made more resistant to external forces, then the scratch resistance improves, but the peelability deteriorates
Solution Approach 1:
The patent carefully balances the concentration of adhesive components (polymers and plasticizers) to achieve optimal peelability. The plasticizer content is specifically controlled to provide sufficient flexibility for easy peeling while maintaining adequate adhesion during wear
Solution Approach 2:
The coating film is designed with dynamic mechanical properties through the inclusion of plasticizers that allow the film to transition between a more rigid state during wear (providing scratch resistance) and a more flexible state during removal (enabling easy peeling)
3Manufacturing precision
If the composition contains more polymers for better film formation, then the coating film quality improves, but the skin compatibility and feel deteriorate
Solution Approach 1:
The patent optimizes the molecular weight and chemical structure of the polymer components to achieve film formation at lower concentrations, reducing potential skin irritation. The use of biocompatible polymers (acrylic acid, methacrylic acid, and their copolymers) ensures skin compatibility while maintaining coating quality
Solution Approach 2:
The patent introduces feel modifiers (silicone oils, fatty acid esters) as intermediary substances that mediate between the polymer coating and the skin. These modifiers improve skin compatibility and tactile feel by providing a smooth, comfortable interface between the coating film and the skin surface
4Strength
If conventional compositions are used, then the application process is simple, but the coating film lacks sufficient adhesion and scratch resistance
Solution Approach 1:
The patent combines multiple functional components into a single integrated composition that can be applied through conventional electrostatic spray equipment. The formulation merges film-forming polymers, plasticizers, and feel modifiers into one composition that delivers enhanced performance without requiring complex application processes or specialized equipment
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 forms a coating film with excellent skin compatibility, adhesion, scratch resistance, and ease of peeling, providing a good feel and ensuring the film remains intact with minimal damage from external forces.
Implementation Method 1
forming a coating film composed of fibers directly on the skin by an electrostatic spray
Implementation Method 2
one or more volatile substances selected from the group consisting of an alcohol and a ketone
Data Source
Figure 1~2
AI summary
Provided is a composition for forming a coating film directly on the skin by an electrostatic spray, the composition being capable of forming a coating film having excellent skin compatibility, adhesion, and scratch resistance, having a good feel, and being easy to peel. A composition for forming a coating film, for forming a coating film composed of fibers directly on the skin by an electrostatic spray, the composition comprising the following Components (a), (b), (c), and (d) : (a) a polymer having a coating film forming ability (b) one or more volatile substances selected from the group consisting of an alcohol and a ketone (c) a plasticizer (d) a feel modifier other than Component (c).