Protective Sheathed Yarn Textiles for UV and Wash Durability
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Solution Overview
Problem
Existing protective garments made from meta-aramid or para-aramid fibers suffer from degradation due to humidity, UV radiation, and abrasion, leading to reduced performance and durability, especially with frequent washing.
Innovation Solution
A textile piece comprising first yarns with a core made of para-aramid or carbon fibers coated by a flexible, UV-blocking sheath, and interlaced to form a porous structure without a continuous coating layer, enhancing breathability and protecting the core from degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If para-aramid fibers are used to reduce jacket weight, then weight is reduced, but durability and mechanical performance deteriorate due to degradation from humidity, UV radiation, and abrasion
Solution Approach 1:
A polyurethane coating layer is applied as an intermediary between the para-aramid fibers and the external environment. This coating layer acts as a protective barrier that shields the fibers from humidity, UV radiation, and abrasion, preventing degradation while maintaining the lightweight特性 of the para-aramid material
Solution Approach 2:
The invention creates a composite structure combining para-aramid fibers with a polyurethane coating layer. This composite material integrates the lightweight and high-strength properties of para-aramid with the protective and durable characteristics of polyurethane, achieving both weight reduction and enhanced durability
2Object-affected harmful factors
If frequent washing is performed to protect health by removing contaminants, then hygiene is improved, but mechanical performance deteriorates due to fiber degradation
Solution Approach 1:
The polyurethane coating layer serves as a mediator that protects the para-aramid fibers during washing operations. It allows the garment to be frequently washed for hygiene purposes while the coating prevents direct contact between water/contaminants and the fibers, thereby maintaining mechanical performance
Solution Approach 2:
The polyurethane coating is applied beforehand to cushion and protect the fibers from the harmful effects of repeated washing. This pre-applied protective layer absorbs the mechanical and chemical stress of washing, preventing fiber degradation before it occurs
3Ease of manufacture
If leather is used for jacket outer layer, then ease of maintenance is improved, but weight increases and comfort during summer deteriorates
Solution Approach 1:
The invention changes the material parameters from traditional leather to para-aramid fibers with polyurethane coating. This parameter change achieves lighter weight and improved breathability for summer comfort while the polyurethane coating provides ease of maintenance through its protective and durable characteristics
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 solution maintains mechanical performance and durability over time, providing improved resistance to UV radiation and abrasion while maintaining flexibility and breathability, even after multiple washes.
Implementation Method 1
coated by a flexible, UV-blocking sheath
Implementation Method 2
interlaced to form a porous structure without a continuous coating layer, enhancing breathability
Data Source
Figure 1~5
AI summary
A textile component (1) comprises interlaced yarns (2). The plurality of yarns (2) includes at least 10% first yarns (2a). Each first yarn (2a) has a core (4) of a first material and a sheath (5) of a second material different from the first material. The first material is a para-aramid, a carbon fiber, or a glass fiber. The sheath (5) forms a water-tight barrier and a barrier blocking ultraviolet radiation around the core (4). The sheath (5) of each first yarn (2a) is separated from the sheath (5) of adjacent yarns (2) by a gap or by a layer of a material more flexible than the second material.