Antibacterial Flexible Cover Treatment via Silver-TiO2 Nanocoating
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Solution Overview
Problem
Existing methods for antibacterial and antiviral surface treatment of flexible cover materials like hides and skins are not universally applicable, may not maintain the material's properties, and do not effectively inhibit viral proliferation.
Innovation Solution
A method involving a two-layer surface treatment process, where a lower support layer is applied followed by an antibacterial and antiviral formulation containing silver chloride and nanometric titanium dioxide, which is then heated to evaporate the solvent, creating a thin active layer that inhibits bacterial and viral growth without compromising the material's properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silver-based compounds are used for antibacterial and antiviral treatment, then pathogen proliferation is inhibited, but the method is not universally applicable to different types of leather and may affect material properties
Solution Approach 1:
The patent applies different silver-based compound formulations to different leather types based on their specific characteristics. The method tailors the composition and application parameters to match the particular leather substrate, ensuring optimal antibacterial and antiviral effectiveness while preserving the unique properties of each leather type.
Solution Approach 2:
The patent modifies various parameters including silver compound concentration, particle size distribution, and application conditions to optimize performance across different leather types. By adjusting these parameters, the method achieves universal applicability while maintaining high reliability for pathogen inhibition.
2Reliability
If silver particles of nanometric size are used, then antibacterial and antiviral activity is enhanced, but the complexity of achieving and controlling particle size increases
Solution Approach 1:
The patent employs controlled particle size parameters for silver compounds, utilizing nanometric sizes to maximize antibacterial and antiviral activity. The method establishes specific size ranges and distribution characteristics that balance high pathogen inhibition effectiveness with manageable production complexity.
Solution Approach 2:
The patent creates composite formulations combining silver-based compounds with other functional ingredients to achieve enhanced antibacterial and antiviral activity. These composite materials allow for optimized particle size distribution while simplifying the overall formulation and application process.
3Reliability
If multiple coating layers are spray deposited, then self-sanitization and self-cleaning properties are provided, but the manufacturing process becomes more complex and time-consuming
Solution Approach 1:
The patent combines multiple functional components into integrated coating formulations that simultaneously provide antibacterial, antiviral, and self-cleaning properties. By merging these functions into unified compositions, the method reduces the number of separate coating steps while maintaining comprehensive protective performance.
Solution Approach 2:
The patent develops universal coating formulations that perform multiple functions including pathogen inhibition, self-sanitization, and self-cleaning in a single application. This multi-functional approach eliminates the need for separate treatment steps, simplifying the manufacturing process while ensuring reliable protective properties.
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 achieves high antibacterial and antiviral effectiveness with minimal sanitizing agent usage, ensuring long-lasting protection suitable for various applications while maintaining the material's properties and adhering to industry standards.
Implementation Method 1
heating the cover substrate to cause evaporation of the solvent of the upper active layer
Implementation Method 2
The action of silver on microorganisms is mainly due to enzymatic deactivation of oxygen metabolism, which ultimately leads to elimination of the bacterium
Implementation Method 3
due to its oxidizing power, silver is also able to interfere with the functions of DNA and RNA chains
Data Source
AI summary
A method of antibacterial and antiviral surface treatment of flexible cover sheet materials includes: providing a flexible cover sheet substrate; depositing at least one lower support layer on the upper surface of the substrate; providing an antibacterial and antiviral formulation comprising a liquid active sanitizing composition dispersed in a solvent containing a polymer-based solution; depositing the formulation on at least one lower support layer to form an upper antibacterial and antiviral active layer; heating the cover substrate to cause evaporation of the solvent of an upper active layer. The active sanitizing composition contains silver chloride and solid-state titanium dioxide of nanometric size and is intended, to inhibit proliferation of bacterial and viral pathogens on the surface of the substrate, while keeping the properties of the materials thereof unaltered.