Antibacterial fiber structure and method for producing same
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Solution Overview
Problem
Existing antibacterial textile products face issues with fiber discoloration and texture degradation due to the use of high concentrations of silver antibacterial agents, and there is a limited range of antibacterial agents that can be effectively integrated into fibers without using binders, leading to poor washing durability.
Innovation Solution
An antibacterial fiber structure is developed by immobilizing a low concentration of silver antibacterial agent and titanium oxide synergistically, without the need for resin binders, through thermal treatment, ensuring excellent antibacterial properties and washing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high concentration of silver antibacterial agent is used to achieve strong antibacterial properties, then antibacterial effectiveness is improved, but fiber discoloration and texture degradation occur
Solution Approach 1:
The patent combines silver antibacterial agent with titanium oxide in a composite structure. The titanium oxide acts as a carrier that enables the silver to be incorporated into the fiber at low concentrations (0.001-0.1 wt%) while maintaining strong antibacterial properties. This merging resolves the contradiction by allowing effective antibacterial action without the harmful effects of high silver concentrations.
Solution Approach 2:
The invention uses a composite material system consisting of silver particles, titanium oxide particles, and fiber. The titanium oxide serves as a support matrix that disperses and stabilizes the silver particles, enabling low-concentration silver to achieve high antibacterial effectiveness without causing fiber discoloration or texture degradation.
2Reliability
If silver antibacterial agent is fixed to fiber surface using resin binder, then antibacterial properties are maintained, but fiber texture is impaired and antibacterial agent leaves during washing
Solution Approach 1:
The patent removes the resin binder component from the system entirely. Instead of using a binder to attach silver particles to the fiber surface, the invention directly incorporates silver-titanium oxide composite particles into the fiber structure through kneading and spinning processes, eliminating the texture impairment caused by resin binders.
Solution Approach 2:
The titanium oxide acts as an intermediary carrier that facilitates the incorporation of silver particles into the fiber. This intermediary structure allows the silver to be stably embedded in the fiber without requiring resin binders, thus maintaining both antibacterial properties and fiber texture quality.
3Duration of action of stationary object
If inorganic antibacterial agents are enclosed in synthetic fibers to achieve heat resistance, then washing durability is improved, but antibacterial properties become insufficient due to lack of bleeding onto fiber surface
Solution Approach 1:
The patent merges the heat resistance property of inorganic titanium oxide with the antibacterial property of silver particles. The composite structure allows the silver to remain stably enclosed in the fiber (providing washing durability) while still maintaining strong antibacterial activity, resolving the contradiction between stability and effectiveness.
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 synergistic effect of silver and titanium oxide provides effective antibacterial properties with reduced fiber discoloration and texture degradation, maintaining quality even after repeated washing.
Implementation Method 1
performing thermal treatment at 80°C or higher and 200°C or lower under normal pressure to obtain a fiber structure in which the silver antibacterial agent (X1) and the titanium oxide (X2) are immobilized to the fiber
Data Source
Figure 1
AI summary
As a fiber structure having antibacterial properties with no discoloration risk or texture degradation in fiber and with excellent washing durability, an antibacterial fiber structure including a synthetic fiber is provided, wherein a silver antibacterial agent (X1) and titanium oxide (X2) are immobilized to the fiber, the silver antibacterial agent (X1) is contained in an amount of 0.0001 to 0.05% by weight of the entire fiber structure, and the amount of the titanium oxide (X2) contained is set to 1 to 9 on a weight basis, where the amount of the silver antibacterial agent (X1) contained is 1.