Single-Material Soccer Ball Structure for Adhesive-Free Recycling
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Solution Overview
Problem
The manufacturing of soccer balls requires significant energy and generates greenhouse gas emissions due to the use of diverse materials and adhesives, and their disposal poses environmental challenges.
Innovation Solution
A soccer ball composed of layers predominantly made of a single material class, such as thermoplastic polyurethane (TPU), allowing for easy recycling and bonding without adhesives through methods like welding, thereby reducing energy consumption and emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple different materials are used for ball components (bladder, cushioning layer, exterior layer), then the ball achieves optimal performance characteristics for each layer, but the manufacturing process requires significant energy and generates greenhouse gas emissions
Solution Approach 1:
The patent applies homogeneity by using a single material (thermoplastic polyurethane or TPU) for all ball components including the bladder, cushioning layer, and exterior layer. This eliminates the need for multiple material types while maintaining functional performance, thereby reducing manufacturing complexity and energy consumption associated with handling, processing, and bonding different materials.
Solution Approach 2:
The TPU material serves multiple functions across different ball layers simultaneously. The same material provides structural integrity for the bladder, cushioning properties for the intermediate layer, and protective/design functions for the exterior layer, eliminating the need for specialized materials for each function and reducing overall manufacturing energy requirements.
2Reliability
If different materials and adhesives are used for ball components, then functional requirements are met, but adhesive usage creates additional environmental burden and complicates recycling
Solution Approach 1:
The patent extracts and eliminates adhesives from the ball manufacturing process by using thermal welding to bond TPU components. This removal of the harmful adhesive substance eliminates the environmental burden associated with adhesive production, application, and disposal while maintaining effective component bonding through alternative thermal bonding methods.
Solution Approach 2:
The patent replaces the chemical bonding mechanism (adhesives) with a thermal/physical bonding mechanism (welding). By using heat to melt and fuse TPU components together, the system substitutes chemical substances with a physical process, eliminating harmful adhesive emissions and simplifying the environmental impact profile.
3Reliability
If ball components are made from diverse materials, then performance optimization is achieved, but taking apart the ball for disposal or recycling requires considerable effort and energy
Solution Approach 1:
By using the same TPU material throughout all ball components, the patent creates a homogeneous structure that can be processed uniformly during recycling. This eliminates the need for complex separation procedures required when dealing with multi-material constructions, significantly reducing disassembly effort and energy consumption for end-of-life processing.
Solution Approach 2:
The patent merges all ball components into a single material system (TPU), making the entire ball structure recyclable as one material type. This combining of previously separate material streams into a unified material composition simplifies the recycling process, allowing the entire ball to be processed together rather than requiring separation of different materials.
4Adaptability or versatility
If traditional multi-material ball construction is used, then design flexibility and performance are improved, but material separation for recycling becomes complex and energy-intensive
Solution Approach 1:
The patent maintains design flexibility while using a single TPU material for all components, allowing varied structural designs and aesthetic configurations without requiring different materials. This homogeneous material approach ensures that recycling processes can efficiently recover and reuse the material without the losses and complexities associated with separating multiple material types.
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 solution enables efficient recycling and reduces environmental impact by minimizing the need for separation and reuse of materials, extending the ball's lifetime, and lowering greenhouse gas emissions.
Implementation Method 1
bonding without adhesives through methods like welding
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.