Biodegradable Tennis Ball Core and Felt Composition
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Solution Overview
Problem
Traditional sports balls, particularly tennis balls, are made from non-biodegradable synthetic materials that generate significant plastic waste due to their long degradation lifetime, affecting playability and contributing to environmental pollution.
Innovation Solution
Incorporation of biodegradable additives into the rubber core and felt layer of tennis balls, maintaining the balls' structural integrity and playability while ensuring rapid degradation within approximately 3 to 5 years.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional synthetic materials are used in tennis balls, then structural integrity and playability are maintained, but environmental pollution and plastic waste increase
Solution Approach 1:
The patent uses composite materials by combining biodegradable polymers (PLA, PHB, PCL) with traditional tennis ball materials. The core consists of a biodegradable polymer matrix reinforced with natural fiber composites, creating a material that maintains structural integrity while being environmentally degradable. This resolves the contradiction by achieving both reliability and reduced environmental harm.
Solution Approach 2:
The patent modifies the chemical composition parameters of the tennis ball materials by incorporating biodegradable additives and natural fibers into the polymer matrix. By changing the material composition from traditional synthetic rubber to biodegradable polymer composites, the patent achieves environmental degradability while maintaining mechanical properties through optimized formulation.
2Loss of substance
If biodegradable materials are used in tennis balls, then plastic waste is reduced, but durability and performance may deteriorate
Solution Approach 1:
The patent employs composite materials combining biodegradable polymers with natural fiber reinforcements. The core uses a biodegradable polymer matrix (PLA, PHB, or PCL) strengthened with natural fibers, creating a composite that achieves both biodegradability and sufficient durability for tennis ball performance requirements.
Solution Approach 2:
The patent applies different material compositions to different parts of the tennis ball structure. The core uses biodegradable polymer composites optimized for durability, while the felt covering uses traditional materials for performance. This local differentiation allows the biodegradable core to provide structural integrity without compromising overall ball durability.
3Duration of action of stationary object
If biodegradable additives are incorporated into the core and felt, then degradation time is reduced to 3-5 years, but manufacturing complexity increases
Solution Approach 1:
The patent controls degradation time by selecting specific biodegradable polymers (PLA, PHB, PCL) with known degradation rates and adjusting their formulation ratios. The core and felt are designed to degrade within 3-5 years through optimized material composition, achieving predictable degradation timelines without excessive manufacturing complexity.
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 biodegradable additives enhance the durability and maintain the tennis ball's performance by preserving interior pressure and reducing material loss, significantly reducing plastic waste generation.
Implementation Method 1
the core including a first blend of a rubber based material, a first petroleum based material, and a first biodegradable additive; and a felt layer overlaying a surface of the core, the felt layer including a second blend of a second petroleum based material and a second biodegradable additive
Data Source
AI summary
Biodegradable tennis balls are described. A biodegradable tennis ball includes a core forming a hollow interior chamber, the core made of a blend of a rubber based material, a first petroleum based material, and a first biodegradable additive. The biodegradable tennis ball also includes a felt layer overlaying a surface of the core, the felt layer made of a second blend of a second petroleum based material and a second biodegradable additive. In some cases, the biodegradable tennis ball may include an adhesive layer adhering the felt layer to the core. In some cases, the felt layer may further include wool.