Multilayer Waterproof Athletic Garments for Breathable Rain Protection
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Solution Overview
Problem
Athletes engaging in outdoor athletic training or competition face discomfort and performance issues due to overheating caused by trapped perspiration in traditional waterproof garments that also fail to manage moisture effectively.
Innovation Solution
A multilayered garment design featuring a water-resistant outer layer with zonal vapor permeability and a moisture management inner layer, joined by a breathable intermediate layer with micro-perforations and strategically positioned holes to facilitate perspiration evaporation while preventing liquid water entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional waterproof gear is worn to protect from precipitation, then water resistance is improved, but moisture management deteriorates due to trapped perspiration
Solution Approach 1:
The garment is divided into three functional layers: an outer water-resistant layer, a middle breathable membrane layer, and an inner moisture-wicking layer. Each layer performs a specific function, allowing the garment to simultaneously repel precipitation while managing perspiration through the segmentation of protective and moisture-managing functions.
Solution Approach 2:
The outer layer incorporates selective micro-perforations at specific locations (underarm zones, back panels) to create zones of enhanced vapor permeability where heat and moisture accumulation is greatest, while maintaining water resistance in other areas. This local differentiation allows targeted moisture escape without compromising overall water protection.
2Object-affected harmful factors
If a waterproof layer is added to protect from rain, then water resistance is improved, but vapor permeability deteriorates causing overheating
Solution Approach 1:
The middle layer utilizes a breathable membrane with microporous structure that has pore sizes small enough to block liquid water droplets from penetration while large enough to permit water vapor molecules to pass through. This porous architecture enables simultaneous water resistance and vapor permeability, preventing overheating while maintaining rain protection.
Solution Approach 2:
The garment combines three different material systems with complementary properties: a hydrophobic water-resistant outer fabric, a breathable microporous membrane, and a hydrophilic moisture-wicking inner fabric. This composite structure integrates the beneficial properties of each material to achieve both water protection and thermal regulation.
3Temperature
If micro-perforations are added to the outer layer to improve breathability, then vapor permeability is improved, but water resistance deteriorates due to potential liquid water entry
Solution Approach 1:
The micro-perforations function as controlled porous structures with precisely engineered孔径 (pore sizes) that exploit the difference between liquid water and water vapor molecular dimensions. The perforation size is calibrated to be smaller than liquid water droplets but larger than water vapor molecules, enabling selective permeability that maintains water resistance while achieving vapor permeability for breathability.
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 garment effectively protects against precipitation while allowing for temperature regulation through vapor escape, balancing water resistance and breathability across different zones to enhance athlete comfort and performance.
Implementation Method 1
The outer layer may, for example, comprise a knit or woven textile treated with a durable water repellant (DWR) finish to provide water resistance
Implementation Method 2
the inner layer may comprise a moisture management fabric to facilitate the transmission of perspiration across the fabric layer from the wearer's skin to the external side of the inner layer
Implementation Method 3
The micro-perforations in the outer layer may be of a size, such as 0.5 millimeters in diameter, that permits water vapor to evaporate through the micro-perforation but that substantially prevents liquid water entering the garment through the micro-perforation
Implementation Method 4
The intermediate layer has a plurality of holes to enhance vapor transport from the inner layer through a vapor permeable portion of the outer layer at locations of the garment where enhance breathability is desired
Data Source
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AI summary
A water proof moisture management garment and a method of constructing such a garment in accordance with the present invention utilizes at least three layers. An outer layer may comprise a stretch woven textile treated with a durable water repellant finish. The outer layer may be micro-perforated to permit perspiration to evaporate through the micro-perforations. An inner layer may comprise a moisture management textile to facilitate the transport of perspiration away from the skin of a wearer. An intermediate layer may bond the outer layer to the inner layer. The intermediate layer may provide holes to permit the evaporation of perspiration from the inner layer through the micro-perforations of the outer layer.