Shoe Upper Composite Fabric with Copper Yarn for Thermal and Strength Balance
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Solution Overview
Problem
Existing shoe uppers made from 100% wool fabrics face high processing costs and low tensile strength, limiting their functionality and comfort.
Innovation Solution
A composite structure fabric combining natural wool with copper yarn, polyethylene, nylon, and cotton, where the inner upper is 100% polyethylene, and the outer upper includes 40-70% wool, 10-40% nylon or polyethylene, and 10-20% cotton with ion-bonded copper yarn, providing improved strength and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If 100% wool fabric is used for shoe upper, then thermal insulation and breathability are improved, but processing cost increases and tensile strength decreases
Solution Approach 1:
The patent applies composite materials by blending wool fibers with synthetic fibers (polyester, nylon, or acrylic) in specific ratios (wool 30-70%, synthetic fiber 30-70%). This composite structure maintains the thermal insulation properties of wool while gaining the strength and durability of synthetic fibers, resolving the contradiction between thermal insulation and tensile strength.
Solution Approach 2:
The patent changes the compositional parameters of the fabric by controlling the weight percentage of wool and synthetic fibers within specific ranges (wool 30-70%, synthetic fiber 30-70%). By adjusting these parameters, the fabric achieves optimal balance between thermal insulation performance and mechanical strength, while also controlling processing costs.
2Temperature
If 100% wool fabric is used for shoe upper, then thermal insulation is improved, but processing cost increases
Solution Approach 1:
The patent uses composite materials combining wool with cost-effective synthetic fibers (polyester, nylon, or acrylic). This blend maintains adequate thermal insulation properties while reducing dependency on expensive 100% wool, thereby lowering processing costs while preserving essential functional benefits.
Solution Approach 2:
The patent optimizes the wool content parameter within 30-70% weight range, finding the optimal balance point where thermal insulation requirements are met but wool consumption (and associated costs) are controlled. This parameter optimization reduces processing costs while maintaining functional performance.
3Strength
If wool and chemical fiber blended fabric is used, then processing cost and strength are improved, but natural wool content must be reduced
Solution Approach 1:
The patent creates a balanced composite fabric where wool (30-70%) provides natural properties while synthetic fibers (30-70%) provide strength. This composite approach ensures that wool content remains significant enough to maintain natural fiber benefits while synthetic fibers contribute adequate tensile strength.
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 composite fabric enhances the shoe's antibacterial, deodorizing, heat retention, anti-static, and electromagnetic shielding properties while reducing processing costs and maintaining suitable strength and hardness for footwear.
Implementation Method 1
the cotton may include ion-bonded 5% by weight copper yarn and 95% by weight of acrylic
Implementation Method 2
wool is not easily wrinkled and has excellent thermal insulation and breathability
Implementation Method 3
by using a composite upper fabric including natural wool and copper yarn, it is possible to improve the functionality of antibacterial, thermal insulation, electromagnetic wave shielding, etc.
Implementation Method 4
using wool blend fabric containing copper yarn, it has the effect of improving the functionality of shoes, such as antibacterial, deodorizing, heat storage, warmth, and anti-static
Data Source
AI summary
The present invention relates to an upper for footwear using natural wool and composite structure fabric, an inner upper including 100% by weight of polyethylene, and an outer upper including 40 to 70% by weight of wool, and cotton) 10-20% by weight and 10-40% by weight of nylon or 10-40% by weight of polyethylene, and cotton contains 5% by weight and 95% by weight of copper yarn containing 2-20 g of copper % of acrylic is ion-bonded, and it is possible to prevent static electricity by copper, and to improve antibacterial properties, heat storage and warming functions, deodorization functions, and electromagnetic wave shielding functions.