Polyamide Fiber Orientation Control for Reversible Moisture Extension
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Solution Overview
Problem
Existing synthetic fibers, such as polyester and nylon, have insufficient moisture and water absorbency, limiting their application in clothing that requires moisture absorption, and they lack sufficient comfort and humidity control.
Innovation Solution
A polyamide fiber with a degree of orientation between 0.7 and 0.83 is developed, which allows for significant reversible extension and contraction upon water absorption and release, enhancing moisture absorption and water absorption extension rates while maintaining wash-fastness and other essential properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the degree of orientation of polyamide fiber is increased to improve dimensional stability, then the fiber becomes less extensible and loses reversible extension capability upon water absorption
Solution Approach 1:
The invention optimizes the degree of orientation parameter to a specific range (0.70-0.83) to achieve the desired balance between dimensional stability and reversible extension capability. This parameter optimization allows the fiber to maintain sufficient structural stability while retaining the ability to extend and contract in response to moisture changes.
2Ease of manufacture
If conventional synthetic fibers are used, then manufacturing simplicity is maintained, but moisture absorbency and water absorbency remain insufficient
Solution Approach 1:
The invention changes the degree of orientation parameter to a specific range (0.70-0.83) to enhance moisture absorbency and water absorbency while maintaining manufacturing feasibility. This parameter optimization enables conventional polyamide fibers to achieve improved hygroscopic properties without requiring complex manufacturing processes.
3Reliability
If hydrophilic post-processing agents are applied to improve moisture absorbency, then moisture absorption is enhanced, but properties deteriorate after washing
Solution Approach 1:
The invention applies preliminary action by optimizing the degree of orientation during the fiber manufacturing process itself, rather than relying on post-processing treatments. This approach embeds the moisture-absorbing properties directly into the fiber structure, ensuring wash-fastness and long-term stability without requiring subsequent chemical treatments that would deteriorate after washing.
4Reliability
If polyamide fiber has high moisture absorbency, then comfort is improved, but dimensional stability decreases
Solution Approach 1:
The invention optimizes the degree of orientation to a specific range (0.70-0.83) to achieve the optimal balance between comfort (through enhanced moisture absorbency) and dimensional stability. This precise parameter control allows the fiber to provide comfort benefits while maintaining sufficient structural integrity.
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 polyamide fiber effectively controls humidity, providing increased comfort and a self-regulating fiber structure that maintains stitch integrity, suitable for sportswear and underwear applications.
Implementation Method 1
a polyamide fiber which extends and contracts significantly in a reversible manner upon absorbing and releasing water
Implementation Method 2
a highly moisture-absorbent polyamide fiber which extends and contracts significantly in a reversible manner upon absorbing and releasing water
Data Source
Figure 1~4
AI summary
Disclosed is a polyamide fiber having a degree of orientation equal to or higher than 0.7 and equal to or lower than 0.85. The polyamide fiber is suitably obtained by forming a polyamide component having high moisture absorbency and a specific soluble component into a conjugated fiber under specific fiber formation conditions.