Warp Knit Spacer Textile for Dual Sweat Absorption and Cooling
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Solution Overview
Problem
Existing wet-activated cooling textiles quickly lose their cooling effect as they dry out and warm up to skin temperature, and they have limited sweat-absorbing capability due to their thin construction and lack of loop pile.
Innovation Solution
A dual-function warp knit spacer fabric construction with a loop pile side for sweat absorption and a flat side for conductive cooling, utilizing specialized yarns and construction techniques to enhance evaporative cooling and moisture management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If woven and double knit constructions using absorbent yarns are used, then cooling effect is provided, but the fabric quickly dries out and warms up to skin temperature, negating the cooling effect
Solution Approach 1:
The textile is divided into two distinct functional layers: a loop pile absorbent layer for moisture absorption and a flat cooling layer for conductive cooling. This segmentation allows each layer to specialize in its function, with the absorbent layer continuously supplying moisture to the cooling layer, thereby extending the duration of the cooling effect.
Solution Approach 2:
The textile combines two different fabric constructions (loop pile and flat knit) with different functional properties into a single composite structure. The loop pile layer provides high moisture absorption capacity while the flat layer provides sustained conductive cooling, and their integration allows both functions to work simultaneously and reinforce each other.
2Quantity of substance
If woven and double knit constructions are used, then cooling function is achieved, but sweat absorbing capability is limited due to thin construction and lack of loop pile
Solution Approach 1:
The textile is divided into two distinct functional layers: a loop pile absorbent layer for moisture absorption and a flat cooling layer for conductive cooling. This segmentation allows each layer to specialize in its function, with the absorbent layer continuously supplying moisture to the cooling layer, thereby extending the duration of the cooling effect.
Solution Approach 2:
The loop pile layer is constructed with a porous structure that significantly increases its surface area and moisture absorption capacity. The loop pile configuration creates numerous capillary channels that actively wick and absorb sweat, greatly enhancing the quantity of sweat that can be absorbed compared to flat knit constructions.
3Ease of manufacture
If a single layer fabric is used, then construction is simple, but it cannot simultaneously provide both high sweat absorption and extended cooling duration
Solution Approach 1:
The textile merges two previously separate functions (sweat absorption and cooling) into a single integrated fabric structure. The two layers are knitted together as one continuous textile, allowing the absorbent layer to continuously supply moisture to the cooling layer, thereby achieving both high sweat absorption and extended cooling duration simultaneously.
Solution Approach 2:
The textile is designed with multi-functionality, where the loop pile layer handles moisture absorption and the flat layer handles conductive cooling. This universal design allows the single textile to perform multiple functions that were previously requiring separate products, enhancing adaptability while maintaining manufacturing efficiency through integrated construction.
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 textile effectively absorbs up to four times its weight in perspiration and provides extended cooling below skin temperature, both when wetted and in a dry state, offering improved sweat management and cooling performance compared to current textiles.
Implementation Method 1
a loop absorbent side
Implementation Method 2
increased conductive cooling
Implementation Method 3
evaporative cooling
Data Source
AI summary
Disclosed herein is a warp knit spacer dual functional fabric construction that provides the ability to absorb sweat on one side and the ability to cool skin to below a current temperature whether wetted or dry on the other side. The knit uses four separate yarns which collectively work together to produce enhanced cooling. Knits can include warp knit spacer and circular knit spacer materials. Various finishing methods may also be employed to enhance the cooling power of the fabric.