Biodegradable Diaper with Fungal Reactant Capsule
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Disposable diapers made of synthetic materials do not biodegrade, leading to environmental issues with prolonged decomposition times and increased landfill waste, necessitating a more environmentally friendly and efficient solution.
Innovation Solution
A biodegradable disposable diaper design incorporating a soft inner layer, a superabsorbent middle layer, a liquid-impermeable outer layer, and a frangible capsule containing mycelium, fungal spores, and enzymes that utilize bodily waste to degrade the diaper and surrounding materials in landfills.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If synthetic materials (polypropylene, polyethylene) are used in disposable diapers, then the diaper provides effective waste containment and liquid impermeability, but the diaper does not biodegrade and takes hundreds of years to decompose
Solution Approach 1:
The diaper is divided into distinct functional layers: an inner absorbent layer for waste containment, an outer synthetic layer for liquid impermeability and structural integrity, and a frangible capsule containing biodegradable reactants. This segmentation allows each layer to perform its specific function while enabling the biodegradable components to decompose independently, resolving the contradiction between containment reliability and decomposition time.
Solution Approach 2:
The patent introduces frangible capsules containing mycelium, fungal spores, and enzymes that change the biodegradability parameter of the diaper system. These reactants remain dormant during use but activate upon disposal, transforming the diaper from a non-biodegradable synthetic structure to an actively degrading system, thus reducing decomposition time from hundreds of years to a manageable period while maintaining containment effectiveness during use.
2Duration of action of stationary object
If frangible capsules containing mycelium, fungal spores, and enzymes are added to enable biodegradation, then the diaper can decompose more quickly, but the device complexity increases
Solution Approach 1:
The frangible capsules are pre-filled with mycelium, fungal spores, and enzymes during manufacturing, preparing the biodegradation mechanism in advance. The capsules are designed to break easily upon disposal, automatically initiating the decomposition process without requiring additional user actions or complex activation mechanisms, thus adding minimal complexity while achieving rapid biodegradation.
Solution Approach 2:
The frangible capsules serve as an intermediary carrier that protects the sensitive biodegradable reactants (mycelium, spores, enzymes) during storage and transport, then releases them at the appropriate time. This intermediary structure simplifies the overall system by encapsulating complex biological agents in a simple, breakable container that interfaces with the synthetic diaper layers.
3Object-affected harmful factors
If the amount of non-biodegradable materials is reduced, then the environmental friendliness improves, but the liquid impermeability and structural integrity may be compromised
Solution Approach 1:
The patent applies different material qualities to different regions of the diaper: the inner absorbent layer uses biodegradable materials for direct contact with waste, while the outer layer maintains synthetic materials for liquid impermeability and structural support. The frangible capsules are strategically positioned to provide biodegradation functionality at specific locations. This local differentiation allows the diaper to be environmentally friendly where needed while maintaining reliability in critical functional areas.
Solution Approach 2:
The diaper combines multiple material types into a composite structure: biodegradable absorbent materials, synthetic impermeable layers, and biological reactants in frangible capsules. This composite approach allows each material to contribute its superior properties - the biodegradable components reduce environmental impact while the synthetic components ensure liquid impermeability and structural integrity, achieving both goals simultaneously.
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 diaper accelerates decomposition, reduces waste in landfills, and promotes environmentally friendly degradation, minimizing non-biodegradable materials and greenhouse gas emissions.
Implementation Method 1
a frangible capsule, dispenser or packet containing a substance comprising mycelium, fungal spores and/or enzymes configured for using bodily waste to grow and degrading the biodegradable disposable diaper in a disposal environment
Implementation Method 2
a substance comprising mycelium, fungal spores and/or enzymes configured for using bodily waste to grow and degrading the biodegradable disposable diaper
Implementation Method 3
a middle layer comprising superabsorbent polymer for absorbing and retaining the bodily waste fluids that have passed through the inner layer
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A biodegradable disposable diaper includes an inner layer comprising a soft, nonwoven fabric, the inner layer for resting against a wearer's skin and allowing the passage of bodily waste fluids, a middle layer comprising superabsorbent polymer for absorbing and retaining the bodily waste fluids, an outer layer comprising a liquid impermeable membrane, the outer layer for restricting the passage of bodily waste fluids, and a frangible capsule, dispenser or packet containing a substance comprising mycelium, fungal spores and/or enzymes configured for using bodily waste to grow and degrading the biodegradable disposable diaper in a disposal environment, the frangible capsule, dispenser or packet further for allowing the deposition of the substance into the diaper at the time of disposal. A substance configured for using bodily waste to grow and degrading a biodegradable disposable diaper in a disposal environment, the substance configured for deposition onto the diaper.