Electrostatic UV Coating for Skin Durability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional UV protective cosmetics have low water resistance and perspiration resistance, leading to uneven distribution of UV protective agents on the skin, resulting in inadequate SPF values and poor durability due to contact with clothes or skin.
Innovation Solution
A method involving the application of a UV protective composition followed by electrostatic spraying of a composition containing volatile substances and polymers with film-forming abilities directly onto the skin, forming a uniform and durable UV protective coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional UV protective cosmetics are applied to block UV radiation, then SPF values are obtained, but the coating has low water resistance and perspiration resistance, causing it to disappear from the skin
Solution Approach 1:
The patent combines UV protective agents with film-forming polymers and volatile substances to create a composite coating system. The polymer provides structural integrity and resistance to water and sweat, while the UV protective agents maintain their sun protection function, resolving the contradiction between SPF effectiveness and durability
Solution Approach 2:
The patent employs film-forming polymers that create a flexible, adherent coating on the skin. This film structure physically protects the UV protective agents from being washed away by water or sweat, while maintaining the coating's elasticity to accommodate skin movement
2Reliability
If UV protective cosmetics are applied to achieve high SPF values, then UV protection is improved, but the coating is not uniform due to skin irregularities, resulting in low SPF at thin coating areas
Solution Approach 1:
The patent replaces traditional mechanical application methods (brushes, fingers) with electrostatic spraying technology. This substitution enables the coating to be deposited as a fine aerosol that conforms to skin contours, ensuring uniform distribution of UV protective agents across irregular skin surfaces
Solution Approach 2:
The patent changes the physical state and delivery parameters of the UV protective composition by converting it into an electrostatically charged aerosol. This parameter change allows the coating to penetrate and adhere uniformly to skin irregularities, eliminating thin spots that would compromise SPF effectiveness
3Reliability
If UV protective cosmetics are applied to obtain SPF values, then UV protection is achieved, but the coating disappears due to contact with clothes or skin such as fingers
Solution Approach 1:
The patent creates a flexible polymer film that adheres to the skin, forming a protective shell that prevents the UV protective agents from transferring to clothes or being rubbed off by skin contact. This film structure maintains coating stability while allowing skin movement
Solution Approach 2:
The patent formulates a composite system where film-forming polymers provide adherence and stability, while UV protective agents provide sun protection. This composite structure ensures the coating remains intact during normal activities, preventing disappearance due to contact with clothes or skin
4Manufacturing precision
If electrostatic spraying is used to apply cosmetic foundation for cosmetic decoration, then application coverage is improved, but the coating is not sufficiently adherent and causes color shifting when contacting clothes or skin
Solution Approach 1:
The patent enhances the cosmetic foundation formulation by incorporating film-forming polymers that provide both coverage and adherence. This composite approach maintains the cosmetic decoration function while preventing color shifting through improved bonding to the skin
Solution Approach 2:
The patent employs film-forming polymers that create a flexible, adherent coating over the cosmetic foundation. This film shell locks in the color and prevents transfer to clothes or skin, while maintaining the electrostatic spraying application method for uniform coverage
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 significantly enhances UV protection, improves SPF values, and ensures the coating remains adherent and resistant to water, sweat, and skin contact, while maintaining a good feel and appearance.
Implementation Method 1
a step of electrostatically spraying a composition comprising component (a) and component (b) directly onto the skin to form a coating on the skin
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
Provided is a coating having a uniform and strong UV protective effect over the entire skin.A method for producing a UV protective coating on skin comprisinga step of applying a composition comprising a UV protective agent to the skin, anda step of electrostatically spraying a composition comprising component (a) and component (b) directly onto the skin to form a coating on the skin, in this order or vice versa:(a) one or more volatile substances selected from the group consisting of water, an alcohol and a ketone,(b) a polymer having a film-forming ability.