Single-Material Soccer Ball Structure for Easy Recycling
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Solution Overview
Problem
The manufacturing and recycling of soccer balls require significant energy consumption and generate greenhouse gas emissions due to the use of diverse materials and adhesives, and the separation of components at the end of their life cycle is inefficient and environmentally burdensome.
Innovation Solution
Designing a soccer ball with layers made predominantly of a single material class, such as thermoplastic polyurethane (TPU), allowing for easy recycling and bonding through heat or chemical affinity, eliminating the need for adhesives and simplifying the recycling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different materials are used for different layers of the ball, then the ball achieves optimal performance characteristics for each layer, but the recycling process becomes complex and energy-consuming due to the need to separate and sort individual components
Solution Approach 1:
The patent applies homogeneity by making all layers of the ball from the same material (PVC). The bladder, intermediate layer, and exterior layer are all constructed from PVC materials, eliminating material diversity. This allows the entire ball to be recycled as a single material type through simple incineration or mechanical processing, resolving the contradiction between optimized performance and recycling complexity.
2Strength
If adhesives are used to bond components together, then the ball achieves reliable assembly and structural integrity, but environmental burden increases and separation efforts become more difficult at the end of the ball's lifetime
Solution Approach 1:
The patent extracts and eliminates adhesives from the ball construction process. Instead of using chemical bonding agents to attach the exterior layer to the intermediate layer and the bladder to the intermediate layer, the invention relies on direct mechanical bonding through friction and pressure during the molding process. This removal of harmful substances reduces environmental burden while maintaining structural integrity through the inherent bonding of the molded structure.
3Reliability
If traditional manufacturing processes are used with multiple materials and adhesives, then the ball achieves high quality and reliability, but energy consumption increases and greenhouse gas emissions are generated during both manufacturing and recycling
Solution Approach 1:
The patent applies homogeneity by constructing the entire ball from PVC material, which enables simplified manufacturing processes and recycling methods. The single-material construction allows for energy-efficient production without requiring complex material handling, sorting, or separation processes. Recycling is achieved through direct incineration or mechanical processing of the uniform PVC structure, dramatically reducing the energy consumption and greenhouse gas emissions associated with traditional multi-material ball manufacturing and disposal.
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
Reduces energy consumption and greenhouse gas emissions by enabling efficient recycling of the entire ball in a single step, while maintaining high quality and extending the ball's lifetime through improved material compatibility and bonding methods.
Implementation Method 1
the bladder can usually be inflated through a valve
Implementation Method 2
the cushioning layer primarily serves for cushioning impact forces when the ball is kicked or bounces
Implementation Method 3
providing a ball of excellent quality, which meets all requirements, including the professional ones, is enabled by the knowledge that different (physical and chemical) forms (e.g., yarn, foil, foam, particles, etc.) of a material of the same chemical material class (e.g., thermoplastic polyurethane (TPU), PVC, or polyethylene (PE)) may be used in order to provide the different properties required for manufacturing such a ball
Data Source
AI summary
A ball includes a bladder that has a majority weight component of a material of a first material class. The ball includes at least one intermediate layer that is arranged exterior to the bladder and that has a majority weight component of the material of the first material class. The ball includes at least one exterior layer that is arranged exterior to the at least one intermediate layer and that has a majority weight component of the material of the first material class.