Separable Absorbent Core Diaper Design
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Solution Overview
Problem
Disposable diapers contribute significantly to environmental waste, and existing recycling methods, including eco-diapers and reuse of disposable diapers, have substantial environmental drawbacks due to separate collection, transportation, and disposal challenges.
Innovation Solution
A diaper design featuring a mechanical closure system with adhesive or hook-and-loop fasteners allows the absorbent core, made of biodegradable materials, to be easily separated from the outer shell, enabling separate disposal in organic waste, while the outer shell can be recycled, reducing waste and promoting environmentally friendly disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If disposable diapers are used for absorbency, then absorption performance is improved, but environmental waste increases
Solution Approach 1:
The diaper is divided into separable components: an outer shell and an absorbent core. The absorbent core can be mechanically separated from the outer shell using a closure system, allowing the core to be disposed of in organic waste while the outer shell is recycled, thus resolving the contradiction between absorption performance and environmental waste.
Solution Approach 2:
The absorbent core is designed to be discarded in organic waste after use, while the outer shell is recovered and recycled. This selective disposal and recovery approach maintains the absorption function during use while minimizing environmental impact after disposal.
2Ease of operation
If mechanical closure system is used for separation, then ease of separation is improved, but device complexity increases
Solution Approach 1:
The closure system replaces complex mechanical fastening mechanisms with a simpler adhesive-based system. The adhesive closure allows the absorbent core to be attached to and separated from the outer shell with minimal effort, reducing device complexity while maintaining ease of separation.
3Object-generated harmful factors
If absorbent core is made from biodegradable materials, then environmental sustainability is improved, but manufacturing cost increases
Solution Approach 1:
The absorbent core is made from biodegradable materials such as cellulose flakes, changing the material composition parameter to improve environmental sustainability. While this may increase manufacturing cost, the separable design allows for potential cost recovery through recycling of the outer shell and reduced disposal costs for the biodegradable core.
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 facilitates prompt, hygienic separation of absorbent and outer components, enhancing environmental sustainability by minimizing waste and promoting recycling, thus reducing the overall environmental footprint of disposable diapers.
Implementation Method 1
a film with a plurality of projecting adhesive heads which adhere to the outer shell and/or the absorbent body in a releasable manner by means of adhesion with their end faces
Implementation Method 2
an absorbent core, in particular in the form of cellulose flakes, which are contained in a fluid-permeable, closed absorbent shell
Implementation Method 3
fluid-permeable, closed absorbent shell
Data Source
Figure 1
Figure 2~4
AI summary
A diaper, such as a baby diaper or incontinence diaper, which consists of at least an outer shell (10) and an absorbent core connected to the shell (10) is characterized in that the absorbent core can be separated from the shell (10) by means of a mechanical closing system that acts between the outer shell (10) and the absorbent core (10).