Two-Piece Wearable Absorbent Article with Biodegradable Insert
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Solution Overview
Problem
Current disposable and reusable diapers have drawbacks such as environmental impact, sanitation challenges, and inefficiencies in containing bodily exudates, with disposable diapers relying on non-renewable resources and reusable ones requiring significant energy and water for laundering.
Innovation Solution
A wearable absorbent article design featuring a reusable outer cover and a disposable absorbent insert, where the outer cover is made of durable materials for comfort and hygiene, and the insert is designed for efficient liquid containment and easy replacement, reducing material waste and environmental footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If disposable diapers are made from petroleum-derived materials, then they provide effective exudate containment and ease of disposal, but they increase environmental impact and resource depletion
Solution Approach 1:
The patent changes the material composition parameters by using biodegradable polymers (PLA, PCL, PGA) instead of traditional petroleum-based materials. This substitution maintains the functional properties for exudate containment while altering the environmental degradation characteristics to reduce harmful environmental impact.
Solution Approach 2:
The patent applies the disposable principle by designing an absorbent insert that is intended for single use and then biodegradation. The insert is made from biodegradable materials that can break down after use, eliminating the need for landfill disposal and reducing environmental impact while maintaining effective exudate containment during the usage period.
2Object-affected harmful factors
If reusable cloth diapers are used, then they reduce material waste and environmental footprint, but they require significant energy and water for laundering
Solution Approach 1:
The patent adopts a disposable absorbent insert that is discarded after single use, eliminating the need for repeated laundering cycles. This approach reduces material waste compared to traditional cloth diapers while avoiding the high energy and water consumption associated with frequent washing, as the biodegradable insert simply decomposes after use.
Solution Approach 2:
The patent implements a system where the absorbent insert is discarded after use and naturally biodegrades in the environment. This eliminates the laundering process entirely, reducing both material waste accumulation and the energy/water consumption required for washing reusable cloth diapers.
3Object-affected harmful factors
If reusable cloth diapers are used, then they reduce material consumption, but they present sanitation challenges and reliability issues
Solution Approach 1:
The patent uses a disposable absorbent insert that is discarded after single use, ensuring that sanitation and containment functions are maintained at peak effectiveness throughout the usage period. This eliminates the sanitation challenges of reusable cloth diapers, as each new insert starts in a clean state, while also reducing material consumption through biodegradation.
4Ease of operation
If disposable diapers are used, then they eliminate laundering requirements, but they increase dependency on non-renewable resources
Solution Approach 1:
The patent changes the resource base parameter by substituting petroleum-derived materials with biodegradable polymers from renewable sources (corn starch, sugarcane, cellulose). This maintains the disposal convenience of disposable diapers while eliminating dependency on non-renewable resources.
Solution Approach 2:
The patent maintains the disposable nature of the absorbent insert for ease of operation, but changes the material composition to biodegradable polymers that can naturally decompose. This eliminates the need for landfill disposal infrastructure while reducing dependency on non-renewable petroleum resources.
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 design provides improved comfort, hygiene, and reduced environmental impact by using durable materials for the outer cover and efficient liquid containment in the insert, while simplifying manufacturing and reducing costs.
Implementation Method 1
the absorbent insert is designed for efficient liquid containment
Implementation Method 2
structures and materials that make them relatively more effective at conveying and storing liquid exudates away from the wearer's skin
Implementation Method 3
Some have features that enable them to 'breathe', thereby reducing humidity inside the diaper
Data Source
AI summary
A wearable absorbent article having features for the containment and absorption of bodily exudates. The article may comprise an outer cover and an absorbent insert. The outer cover may be formed of durable or semi-durable materials and be launderable. The insert may be disposable. The insert may have containment and absorption features that prevent soiling of the outer cover by the wearer's exudates, so that the outer cover may be reused after an exudation event and change of inserts. The insert and/or the outer cover may have features to enhance containment, absorption, economy of materials and/or fit that make them asymmetric about their respective lateral axes, and may have features that direct a user to install the insert and/or the outer cover with correct front-rear orientation relative the wearer. Articles of commerce including packages of outer covers and/or inserts in varying combinations of numbers and features are also described.