Moisture-Activated Cooling Cap Layers for Sweat Evaporation

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Solution Overview

Problem

Athletes' baseball style caps, sun visor caps, and gym wrap devices fail to adequately absorb sweat and cool the head during exercise, leading to sweat dripping down the face and insufficient cooling.

Innovation Solution

Incorporation of a sweatband with a first polyester mesh fabric layer and a moisture-activated cooling mesh fabric layer, constructed of 55% nylon and 45% polyester yarn, to enhance moisture absorption and cooling, along with additional polyester mesh fabric layers in the crown, brim, and closure devices to facilitate sweat evaporation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional sweatbands and cap materials are used, then the cap structure is simple and cost-effective, but the moisture absorption and cooling functionality are insufficient

Engineering Contradiction:

Improvemoisture absorption and cooling functionalityVSAvoidcap structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies composite materials by combining multiple fabric layers with different properties: a moisture-wicking polyester mesh layer, a cooling layer with phase change materials or high thermal conductivity fibers, and an outer breathable layer. This composite structure enhances moisture absorption and cooling functionality while maintaining a manageable cap structure through integrated layering rather than separate components.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent utilizes porous materials in the form of mesh fabrics with controlled pore sizes and distributions. The polyester mesh layer features porous structure that facilitates moisture transport, while the cooling layer incorporates porous phase change material enclosures or thermal conductivity channels. These porous structures enhance sweat absorption and evaporation efficiency without significantly increasing overall structural complexity.

Inventive Principle:

Principle #31Porous materials

2Reliability

If multiple fabric layers are added to enhance sweat absorption, then moisture absorption improves, but the cap becomes heavier and more complex

Engineering Contradiction:

Improvesweat absorption capabilityVSAvoidcap weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The patent applies local quality by concentrating moisture absorption and cooling functions specifically in the sweatband and crown regions where sweat contact occurs, rather than uniformly distributing materials throughout the entire cap. The brim and other non-contact areas use lighter, simpler construction. This localized application of enhanced materials absorbs sweat effectively while minimizing overall weight increase.

Inventive Principle:

Principle #3Local quality

3Temperature

If traditional single-layer fabric is used, then the cap is lightweight and simple to manufacture, but cooling efficiency is insufficient

Engineering Contradiction:

Improvehead cooling efficiencyVSAvoidmanufacturing simplicity

Core Design Contradiction:

TemperatureVSEase of manufacture

Solution Approach 1:

The patent segments the cap into distinct functional zones: a moisture-wicking polyester mesh sweatband, a cooling-enhanced crown portion with specialized fabric layers, and a traditional brim structure. Each segment is optimized for its specific function and can be manufactured separately using standard textile processes, then assembled through conventional sewing techniques. This segmentation improves cooling efficiency while maintaining manufacturing simplicity through modular construction.

Inventive Principle:

Principle #1Segmentation

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 effectively absorbs and evaporates sweat more quickly and conducts heat away from the head, providing improved comfort and performance during physical activity.

Implementation Method 1

The moisture activated cooling mesh fabric layer is constructed of substantially 55% nylon yarn and substantially 45% polyester yarn

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Implementation Method 2

The first polyester mesh fabric layer has a plurality of holes extending therethrough. The second polyester mesh fabric layer has a plurality of holes extending therethrough

Methodology Applied

Scientific EffectEvaporation: Evaporation

Implementation Method 3

The moisture activated cooling mesh fabric layer contacts the crown portion

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12439987B1Baseball style cap, sun visor cap, and gym wrap device having improved moisture absorption and cooling

Publication Date: 2025.10.14 SAVE YOUR DO LLC

AI summary

A baseball style cap having a crown portion, a brim, and a sweatband is provided. The sweatband has a first polyester mesh fabric layer and a moisture activated cooling mesh fabric layer. The first polyester mesh fabric layer has a plurality of holes extending therethrough each having a first opening size. The moisture activated cooling mesh fabric layer is constructed of substantially 55% nylon yarn and substantially 45% polyester yarn. The crown portion has a second polyester mesh fabric layer and a third polyester mesh fabric layer. The second polyester mesh fabric layer has a plurality of holes extending therethrough with the first opening size. The third polyester mesh fabric layer has a plurality of holes extending therein having a second opening size smaller than the first opening size.