Removable Midsole Footwear for Recyclable Component Design
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Solution Overview
Problem
Conventional footwear components, such as those made from ethylene vinyl acetate and polymer-based materials, are not readily removable or recyclable, leading to significant waste accumulation in landfills and contributing to environmental pollution due to their short lifespan.
Innovation Solution
The footwear incorporates sustainable, removable, and recyclable components, including a shell and midsole made from materials like sugarcane-based foam, which can be detached and reused or recycled, reducing waste and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional footwear components made from ethylene vinyl acetate and polymer-based materials are used, then the footwear provides adequate structural support and durability, but the components are not readily removable or recyclable, leading to significant waste accumulation in landfills
Solution Approach 1:
The footwear is divided into separable components including an upper, a sole assembly, and a midsole that can be independently removed. The midsole is designed as a distinct component that can be extracted from the sole assembly for recycling purposes, enabling material recovery and reducing landfill waste.
Solution Approach 2:
The patent implements a system where the midsole component can be discarded from the footwear assembly and recovered for recycling. The removable midsole design allows it to be separated and sent to recycling facilities where it can be reprocessed into new products, transforming waste into reusable materials.
2Reliability
If footwear components are designed to be durable and long-lasting, then the footwear provides reliable performance, but the short useful life of most footwear (less than a year) still leads to frequent disposal and environmental pollution
Solution Approach 1:
The footwear design incorporates dynamic reconfigurability where components can be added or removed based on performance needs. The removable midsole allows users to swap components to extend the footwear's useful life, adapting it to different usage conditions and delaying disposal.
Solution Approach 2:
The patent enables parameter changes in the footwear's performance characteristics by allowing replacement of the midsole component. This extends the overall useful life of the footwear system while maintaining reliable performance through component renewal rather than complete replacement.
3Strength
If footwear components are made from traditional materials, then the materials provide necessary structural properties, but they are not readily recyclable and contribute to global waste problems
Solution Approach 1:
The footwear incorporates composite material construction where the midsole is made from materials suitable for recycling while maintaining necessary structural properties. The combination of recyclable materials in the midsole with durable materials in other components creates a balanced system that reduces environmental impact while preserving strength.
Data Source
AI summary
An article of footwear is provided and includes an upper and a sole attached to the upper, where the sole includes a shell and an outsole attached to the shell, and the shell defines an interior space. A midsole is positioned in the interior space and is removably attached to the shell.