Diaper Separation Wall for Urine Stool Isolation
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Solution Overview
Problem
Conventional disposable diapers fail to effectively separate and absorb urine and stool, leading to mixing and increased risk of diaper rash, with existing solutions not providing sufficient separation and retention.
Innovation Solution
A disposable diaper design featuring a breathable water-repellent urine/stool separation wall placed between the skin contact sheet and the top sheet, which separates the space into front and back body parts, preventing the mixture of urine and stool by using a breathable water-repellent sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a skin contact sheet with a stool passing opening is disposed above the top sheet, then the stool can pass through to the top sheet, but the urine and stool may mix together causing diaper rash
Solution Approach 1:
The diaper is divided into distinct functional zones: a front body part side for urine absorption and a rear body part side for stool collection. The urine/stool separation wall creates a physical partition that segments the internal space, ensuring urine and stool remain separated in their respective zones, thus preventing mixture and diaper rash while maintaining ease of stool passage.
Solution Approach 2:
The urine/stool separation wall acts as an intermediary barrier between the urine absorption area and stool collection area. This intermediate structure prevents direct contact between urine and stool, eliminating the harmful chemical reaction that causes diaper rash, while still allowing the stool passing opening to function properly.
2Object-affected harmful factors
If a dam is formed in the crotch part or a pocket part is formed by thinning the absorber, then movement of stool to the front body part side is prevented, but urine and stool may still mix
Solution Approach 1:
Instead of relying solely on horizontal barriers (dams or pocket parts) in the crotch area, the invention introduces a vertical dimension by forming a urine/stool separation wall that extends upward from the absorber. This three-dimensional structure creates a more reliable separation barrier that effectively prevents both stool movement to the front and urine-stool mixing, enhancing the reliability of separation.
3Productivity
If the top sheet is made of liquid permeable material, then urine can penetrate through for absorption, but stool may remain on the top sheet and adhere to the wearer's skin
Solution Approach 1:
The diaper structure is segmented into distinct functional zones with the skin contact sheet forming a separate layer above the top sheet. The stool passing opening in the skin contact sheet allows stool to reach the top sheet, while the urine/stool separation wall ensures stool remains in the rear collection zone. This segmentation prevents stool from adhering to areas that contact the wearer's skin, while maintaining efficient urine absorption through the liquid permeable top sheet.
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 disposable diaper effectively separates and absorbs urine and stool, reducing the risk of diaper rash by preventing their mixture and ensuring efficient absorption and retention.
Implementation Method 1
a urine/stool separation wall disposed in a space between the skin contact sheet and the top sheet for separating the space into a front body part side and a back body part side. The urine/stool separation wall is formed of a breathable water repellent sheet.
Implementation Method 2
The disposable diaper further includes a skin contact sheet disposed above the top sheet, and formed with a stool passing opening, which is an opening capable of passing a stool therethrough
Implementation Method 3
an absorber, a top sheet disposed to cover an upper surface of the absorber and at least partially formed of a liquid permeable material
Data Source
AI summary
A disposable diaper is provided which includes an absorber, a top sheet which is at least partially formed of a liquid permeable material disposed to cover an upper surface of the absorber, a back sheet formed of a liquid impermeable material disposed to cover a lower surface of the absorber, a skin contact sheet disposed above the top sheet and having a stool passing opening capable of passing a stool therethrough formed therein, and a urine/stool separation wall formed of a breathable water repellent sheet disposed in a space between the skin contact sheet and the top sheet so that the space is separated into a front body part side space and a back body part side space.