Polyester Staple Fiber Padding for Quick-Drying Sports Garments
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Solution Overview
Problem
Conventional garments filled with down or synthetic fibers face issues such as adherence to the body when wet, poor washability, uneven padding distribution, heavy weight, and slow drying, which affect their performance in outdoor sports.
Innovation Solution
A garment with a polyester staple fiber cotton padding having an open fiber structure and irregular diameters, coated with a smoothing agent, is used inside a covering fabric with quilting stitches to enhance sliding properties, water removability, and quick dryability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional synthetic fiber padding is used, then warmth and insulation are provided, but the garment becomes heavy and has poor texture
Solution Approach 1:
The patent changes the physical parameters of the fiber by creating an irregular diameter structure along the fiber length, combining thick and thin sections. This structural parameter change provides warmth through air trapping while reducing overall density and weight compared to conventional uniform synthetic fibers.
Solution Approach 2:
The invention creates a composite fiber structure within a single fiber by incorporating varying diameters (thick and thin sections) along the fiber length. This internal composite structure mimics natural down feather properties, providing insulation through air pockets while maintaining low weight.
2Quantity of substance
If conventional synthetic fiber padding is used, then filling is provided, but water removability at washing time is poor
Solution Approach 1:
The irregular diameter structure with alternating thick and thin sections changes the surface area and hydrophobicity parameters of the fiber. The thin sections provide channels for water drainage while thick sections maintain filling volume, improving water removability during washing while preserving filling quantity.
3Quantity of substance
If conventional synthetic fiber padding is used, then filling is provided, but dryability is poor
Solution Approach 1:
The varying fiber diameter structure changes the moisture evaporation parameters by creating multiple pathways through thin sections while maintaining volume through thick sections. This accelerates drying time while preserving the filling amount, as moisture can escape more efficiently through the irregular structure.
4Quantity of substance
If conventional synthetic fiber padding is used, then filling is provided, but uneven distribution of padding occurs after repeated washing
Solution Approach 1:
The irregular diameter structure with smooth transitions between thick and thin sections changes the mechanical properties of the fiber, reducing entanglement and matting during washing. This maintains uniform padding distribution after repeated washing while preserving the total filling amount.
5Quantity of substance
If conventional synthetic fiber padding is used, then filling is provided, but fiber fatigue occurs
Solution Approach 1:
The varying diameter structure with smooth transitions creates stress distribution along the fiber length, preventing stress concentration at uniform sections. This reduces fiber fatigue and extends durability while maintaining the filling amount, as fibers are less prone to breaking and deforming over time.
6Temperature
If conventional down padding is used, then warmth is provided, but the garment adheres to the body and drops body temperature when wet
Solution Approach 1:
The irregular diameter structure with hydrophobic characteristics changes the moisture interaction parameters, causing water to bead up and roll off rather than adhere. This maintains body warmth even when exposed to moisture, as the fiber structure prevents water from compromising the insulating air pockets.
Data Source
AI summary
A garment includes a covering fabric; padding to be filled inside the covering fabric; and quilting stitches. The padding is constituted by polyester staple fibers including fibers having a circular outer peripheral cross section and has an open fiber structure. The fibers constituting the padding have an irregular diameter, and a smoothing agent is fixed to surfaces of the fibers. Thus, it is possible to provide a garment free from problems of uneven distribution of padding and having favorable water removability at the time of washing, quick dryability, and a favorable sliding property between fibers. This garment is suitable as a garment for sports to be washed repeatedly. Further, since the garment can be worn in a puffy state even when wet, it dries quickly by the body heat.