Flat Forming Shoe Upper Construction Process
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Solution Overview
Problem
Traditional athletic shoe manufacturing requires significant labor due to the assembly of numerous three-dimensional components, making it inefficient and costly, and lacks options for customer customization.
Innovation Solution
The implementation of a flat forming construction process for shoe uppers, where layers are initially kept in a two-dimensional shape and then stitched or affixed into a three-dimensional form, using hot-melt films and thermoplastic polyurethane films to bond components, reducing labor-intensive stitching and allowing for customization through materials and design options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional three-dimensional components are assembled to form shoe uppers, then structural integrity and comfort are maintained, but labor requirements and manufacturing complexity increase significantly
Solution Approach 1:
The patent combines multiple traditional shoe upper components (vamp, quarters, tongue, heel counter) into a single integrated flat pattern piece. This merging eliminates the need to assemble multiple separate three-dimensional components, directly reducing labor requirements while maintaining the structural functions of each original component through strategic placement and integration in the flat pattern design
Solution Approach 2:
The patent transitions from traditional three-dimensional assembled components to a two-dimensional flat pattern construction. By forming the complete upper structure in a flat state and then molding it into the final three-dimensional shape, the process simplifies manufacturing while achieving the same structural integrity and comfort properties
2Adaptability or versatility
If standardized shoe manufacturing processes are used, then production efficiency is maintained, but customer customization options are limited
Solution Approach 1:
The patent divides the shoe upper into functional zones (vamp, quarters, tongue, heel counter) that are integrated in the flat pattern but can be independently modified. This segmentation allows customers to select specific features or materials for different zones while maintaining efficient production through the unified flat pattern construction process
Solution Approach 2:
The flat pattern upper design serves multiple functions simultaneously: it provides structural support, comfort features, and customization options all in one integrated component. This multi-functionality allows the same manufacturing process to produce various shoe models and configurations without requiring separate assembly lines for each variant
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
This method significantly reduces labor costs by minimizing the need for specialized equipment and allows for efficient production and customer customization of shoe models, such as running, basketball, and skate shoes, while maintaining structural integrity and comfort.
Implementation Method 1
using hot-melt films and thermoplastic polyurethane films to bond components
Implementation Method 2
The layers are heat-pressed to form a basic laminated upper form
Implementation Method 3
The layers are heat-pressed to form a basic laminated upper form
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
Shoes specifically designed to facilitate production via efficient shoe manufacturing methods and systems are described. In embodiments, the shoe upper is designed by way of a flat forming process, whereby the upper pattern is kept in a two-dimensional shape for most of the upper assembly and then stitched or otherwise affixed into a three-dimensional form in the final stage of upper assembly.