Patterned Heat-Management Fabric for Breathable Warmth

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Solution Overview

Problem

Heat reflective materials used in garments impede breathability and moisture transfer, leading to discomfort and heat loss during physical activity due to trapped moisture and impaired flexibility.

Innovation Solution

A pattern of heat management elements, such as aluminum or copper-based materials, is coupled to a base fabric to manage heat through reflection or conductivity, maintaining the fabric's desired properties like breathability and flexibility by exposing sufficient base fabric surface area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If heat reflective materials are applied to the interior of a garment, then heat reflection and warmth are improved, but breathability and moisture transfer are impeded

Engineering Contradiction:
Improveheat reflectionVSAvoidbreathability
Core Design Contradiction:
TemperatureVSEase of operation

Solution Approach 1:

The heat reflective material is divided into discrete reflective elements arranged in a pattern rather than applied as a continuous layer. This segmentation allows gaps between elements to permit breathability and moisture transfer while maintaining heat reflection capability through the distributed reflective surfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The garment incorporates heat reflective properties selectively at specific locations and orientations. The reflective elements are positioned and oriented to provide heat reflection where needed while leaving other areas with full breathability, creating local variations in functional properties throughout the garment structure.

Inventive Principle:
Principle #3Local quality

2Temperature

If heat reflective materials are applied to the interior of a garment, then heat reflection is improved, but flexibility and drape are impaired

Engineering Contradiction:
Improveheat reflectionVSAvoidflexibility
Core Design Contradiction:
TemperatureVSShape

Solution Approach 1:

The continuous heat reflective layer is segmented into discrete elements that can move and flex independently. This allows the garment to maintain flexibility and natural drape as the segmented elements can accommodate fabric movement without creating rigid constraints, unlike a continuous reflective layer.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The reflective elements are constructed as thin, flexible components that can bend and conform to the garment's shape and movement. These flexible reflective elements maintain their heat reflection properties while allowing the garment to drape and move naturally, avoiding the rigidity associated with traditional reflective material applications.

Inventive Principle:
Principle #30Flexible shells and thin films

3Temperature

If heat reflective materials are applied to the interior of a garment, then heat reflection is improved, but moisture management is worsened

Engineering Contradiction:
Improveheat reflectionVSAvoidmoisture buildup
Core Design Contradiction:
TemperatureVSObject-generated harmful factors

Solution Approach 1:

The segmented reflective element configuration creates pathways and gaps between elements that allow moisture vapor to pass through the garment layer. This prevents moisture buildup by enabling continuous moisture management while the reflective elements provide thermal reflection, resolving the conflict between heat retention and moisture evacuation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The structure incorporates porous or permeable characteristics through the patterned arrangement of reflective elements, creating a semi-permeable barrier that allows moisture vapor transmission. This enables the garment to reflect heat while simultaneously permitting moisture to escape, preventing the wetness and discomfort associated with impermeable reflective layers.

Inventive Principle:
Principle #31Porous materials

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 directs body heat while preserving the fabric's functionality, reducing moisture buildup and heat loss, and enhancing comfort and performance in various environmental conditions.

Implementation Method 1

The purpose of this layer is to inhibit thermal radiation by reflecting the body heat of the wearer

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

A pattern of heat managing/directing elements coupled to a base fabric to manage heat through reflection or conductivity

Methodology Applied
Scientific EffectConduction (thermal): Conduction (thermal)

Data Source

PatentUS8453270B2Patterned heat management material
Publication Date: 2013.06.04 COLUMBIA SPORTSWEAR CO
  • US8453270B2 patent drawing
  • US8453270B2 patent drawing
  • US8453270B2 patent drawing

AI summary

Embodiments of the present disclosure relate generally to body gear having designed performance characteristics, and in particular to methods and apparatuses that utilize an array of heat managing elements coupled to a base material to direct body heat while also maintaining the desired transfer properties of the base material. In some embodiments, the heat managing material elements include heat management elements that reflect heat or conduct heat, and may be directed towards the body of a user or away from the body of the user.