Laundry Additive Zinc Oxide Coating for UV-Protective Fabrics
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Solution Overview
Problem
Existing fabrics face a challenge in providing effective ultraviolet radiation protection while maintaining comfort and affordability, as higher UPF ratings often result in heavier, less comfortable fabrics, and existing methods for attaching UV protection are not controllable or cost-effective.
Innovation Solution
A method involving the use of zinc oxide nanoparticles treated with acid polymers or boronic acid, which are incorporated into fabrics during the washing process using various techniques such as sol-gel processes, mechanochemical methods, or self-assembled monolayers, allowing for binding of these nanoparticles to the fabric for enhanced UV protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the fabric has a tight weave or high thread count to increase UPF rating, then ultraviolet radiation protection is improved, but the fabric becomes heavy and uncomfortable to wear
Solution Approach 1:
The patent applies parameter changes by modifying the chemical properties of zinc oxide particles through treatment with acid polymers or boronic acid, transforming them from hydrophobic to hydrophilic. This enables the particles to bind effectively to fabric fibers during the washing process, achieving UV protection without altering the fabric's physical structure or weight.
Solution Approach 2:
The patent uses acid polymers and boronic acid as intermediary substances that facilitate the binding between zinc oxide particles and fabric fibers. These intermediaries create a bridge that allows the nanoparticles to attach to the fabric during washing, providing UV protection without requiring changes to the fabric's weave or weight.
2Object-affected harmful factors
If chemicals such as UV absorbers or UV diffusers are added during manufacturing to improve protection, then ultraviolet radiation protection is improved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
The patent enables self-service by allowing consumers to apply UV protection at home using a standard washing machine. The treated zinc oxide particles are added to the washing cycle, where they automatically bind to the fabric through the hydrophilic interaction, eliminating the need for complex industrial manufacturing processes.
Solution Approach 2:
The patent extracts the UV protection function from the fabric manufacturing process and separates it into a post-manufacturing treatment. Instead of incorporating UV chemicals during textile production, the protection is applied afterward through a simple washing process, simplifying both manufacturing and application.
3Object-affected harmful factors
If existing methods for attaching UV protection are used, then ultraviolet radiation protection is achieved, but the process is not controllable or cost-effective
Solution Approach 1:
The patent replaces complex mechanical or chemical manufacturing processes with a simple washing-based application system. The treated zinc oxide particles are applied through a standard washing machine cycle, replacing industrial coating or bonding processes with a controllable, consumer-friendly method that uses water and agitation for particle attachment.
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 treated fabrics provide lightweight, comfortable, and cost-effective protection against both UVA and UVB radiation, retaining their protective properties after use and cleaning, and can be easily incorporated into clothing using laundry additives, ensuring enhanced UV resistance and antimicrobial protection.
Implementation Method 1
zinc oxide particles treated with an acid polymer... provide protection against both UVA and UVB radiation
Implementation Method 2
mixing the treated zinc oxide particles and the fabric for the treated zinc oxide particles to bind to the fabric
Implementation Method 3
incorporated into fabrics during the washing process using various techniques such as sol-gel processes
Implementation Method 4
self-assembled monolayers, allowing for binding of these nanoparticles to the fabric
Data Source
AI summary
A method for treating a fabric for protection from ultraviolet radiation is disclosed which comprises the steps of dispensing a suspension of zinc oxide particles treated with an acid polymer into a washing machine during a time in which a fabric is being washed in the washing machine and mixing the treated zinc oxide particles and the fabric for the treated zinc oxide particles to bind to the fabric. Other methods for treating a fabric for protection from ultraviolet radiation are also disclosed.