Japanese Paper Textile Weave for Moisture and Durability
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Solution Overview
Problem
Conventional running shoes face challenges in balancing moisture absorption properties and durability, often leading to skin damage and discomfort due to moisture retention, especially in athletic footwear where weight reduction and durability are prioritized.
Innovation Solution
A textile is developed using a yarn predominantly made of Japanese paper, interwoven with a reinforcing yarn, featuring a specific weave structure that enhances moisture absorption, durability, and dimensional stability, while minimizing skin contact with the reinforcing yarn to prevent friction and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If synthetic fibers such as polyester and nylon are used for upper materials, then strength and durability are improved, but moisture absorption properties deteriorate, causing skin damage
Solution Approach 1:
The patent uses a composite yarn structure combining Japanese paper fibers (providing moisture absorption) with synthetic fibers like polyester or nylon (providing strength). This composite approach allows the upper material to simultaneously achieve high strength and excellent moisture absorption properties, resolving the contradiction between durability and moisture management.
Solution Approach 2:
The patent creates local quality differentiation within the yarn structure by positioning Japanese paper fibers primarily on the surface layer to maximize moisture absorption contact with sweat, while incorporating synthetic fibers throughout the yarn core and structure to provide tensile strength and durability. This spatial distribution of different material properties resolves the contradiction.
2Reliability
If Japanese paper yarn is used for moisture absorption, then moisture absorption properties are improved, but durability under hard sports conditions deteriorates
Solution Approach 1:
The patent creates a composite yarn where Japanese paper fibers are combined with high-strength synthetic fibers. The Japanese paper provides moisture absorption while the synthetic fiber reinforcement maintains durability under hard sports conditions, resolving the contradiction between moisture management and durability.
Solution Approach 2:
The patent positions Japanese paper fibers predominantly on the yarn surface to maximize moisture absorption function, while embedding synthetic fibers within the yarn structure to provide structural integrity and durability. This local differentiation of material functions resolves the contradiction between moisture absorption and strength.
3Strength
If reinforcing yarn is used to improve durability, then strength is improved, but skin damage increases due to friction
Solution Approach 1:
The patent uses composite yarns where synthetic reinforcement fibers are embedded within a matrix of Japanese paper fibers. This structure provides the necessary strength and durability while the Japanese paper outer layer maintains softness and moisture absorption, reducing skin friction and damage.
Solution Approach 2:
The patent creates local quality differentiation by positioning soft, moisture-absorbing Japanese paper fibers on the yarn surface that contacts the skin, while placing reinforcing synthetic fibers internally to provide strength without direct skin contact. This resolves the contradiction between durability and skin comfort.
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 and releases moisture, reducing skin irritation and foot damage, while maintaining excellent durability and shape stability, even under severe use conditions, including rainy conditions.
Implementation Method 1
the textile effectively absorbs and releases moisture
Data Source
AI summary
A textile with high weave density which comprises a main-yarn made of a Japanese paper yarn and a sub-yarn thinner than the main-yarn interwoven with each other, wherein the textile has a weave texture structure including warps A and wefts A made of the main-yarn, and warps B and wefts B made of the sub-yarn, wherein in the weave texture structure, warp rows have a repeating row structure where a plurality of warps B are located between two warps A and weft rows have a repeating row structure where a plurality of wefts B are located between two wefts A, and wherein the warps A and the wefts A cross each other in a plain weave texture structure.