Integrated Knit-Woven Fiber Structure for Zoned Shoe Stretch

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Solution Overview

Problem

Existing shoe designs face challenges in achieving varying stretchability across different parts without increasing the number of components, leading to environmental load from additional materials like adhesives and sewing threads.

Innovation Solution

A fiber structure comprising a knitted structure and a woven structure adjacent to each other, where the knitted structure is formed by first linear bodies, and the woven structure is formed continuously with these bodies and second linear bodies that intersect, allowing for varying stretchability and weight distribution across different parts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the number of parts is increased to achieve different stretchability for each part, then the stretchability control is improved, but the environmental load increases due to additional materials such as adhesives and sewing threads

Engineering Contradiction:
Improvestretchability controlVSAvoidenvironmental load
Core Design Contradiction:
Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The upper is divided into a knitted structure region and a woven structure region, where each region has different stretchability characteristics. This segmentation allows different parts of the upper to have customized stretchability without requiring additional components like adhesives or sewing threads, thereby reducing environmental load while maintaining adaptability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The knitted structure and woven structure are combined into a single integrated upper without additional bonding materials. The knitted structure provides stretchability in one direction while the woven structure provides stretchability in another direction, merging multiple functions into a unified structure that reduces material usage and environmental impact.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If the number of parts is increased to achieve different stretchability for each part, then the stretchability control is improved, but the device complexity increases

Engineering Contradiction:
Improvestretchability controlVSAvoidnumber of parts
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The upper is segmented into distinct knitted and woven regions, each providing specific stretchability characteristics. This segmentation achieves varied stretchability control while maintaining a relatively simple overall structure without requiring multiple separate components or complex assembly processes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The upper structure serves multiple functions through its dual construction: the knitted region provides stretchability in one direction while the woven region provides stretchability in another direction. This multi-functionality reduces the need for additional specialized parts, thereby reducing device complexity while maintaining adaptability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Stability of the object's composition

If adhesives and sewing threads are used to combine parts, then the structural integrity is improved, but the material usage increases

Engineering Contradiction:
Improvestructural integrityVSAvoidmaterial usage
Core Design Contradiction:
Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

The knitted and woven structures are merged into a single integrated upper without requiring adhesives or sewing threads. The structural integrity is maintained through the continuous fabric construction where the knitted and woven regions are seamlessly joined, eliminating the need for additional bonding materials and reducing overall material usage.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The upper structure is designed to be self-sufficient without requiring external bonding materials. The knitted and woven regions are constructed to work together as a unified structure, where the interlocking of different fabric types provides inherent structural integrity without the need for adhesives or sewing threads.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS20250382730A1Fiber structure, shoe, garment, bag, and method for producing fiber structure
Publication Date: 2025.12.18 ASICS CORP
  • US20250382730A1 patent drawing
  • US20250382730A1 patent drawing
  • US20250382730A1 patent drawing

AI summary

A fiber structure includes a knitted structure and a woven structure adjacent to each other, in which the knitted structure is formed by a plurality of first linear bodies, and the woven structure is formed continuously with the knitted structure by the plurality of first linear bodies and a plurality of second linear bodies that intersect with the plurality of first linear bodies and are different from the plurality of first linear bodies.