Nonwoven Insert Patch Barrier for Urination Overflow Control
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Solution Overview
Problem
Existing disposable absorbent underwear products fail to effectively prevent fluid overflow during urination, particularly in males who urinate towards the front of the insert, leading to excess fluid leakage.
Innovation Solution
The design incorporates a non-woven patch with a barrier that covers the ends of the absorbent insert, forming a pouch to collect excess fluid and redirect it back to the absorbent core, while a barrier connects the patch to the base layer to prevent overflow onto the garment layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional absorbent insert is used without additional barrier structures, then the product structure remains simple, but fluid overflow occurs during urination leading to leakage
Solution Approach 1:
The insert is segmented into functional zones: a pouch region formed by the non-woven patch that collects excess fluid, and a barrier region that redirects fluid to the absorbent core. This segmentation allows different portions of the insert to perform specialized functions, preventing overflow while maintaining structural organization.
Solution Approach 2:
The non-woven patch acts as an intermediary element between the absorbent core and the garment layer. It creates a pouch that intercepts excess fluid before it can overflow, and the barrier within the patch redirects this fluid back to the absorbent core, serving as a mediating structure that resolves the overflow problem.
2Reliability
If the absorbent core extends to the edges of the base layer, then material usage is maximized, but fluid can overflow directly onto the garment layer
Solution Approach 1:
The solution moves from a two-dimensional coverage approach to a three-dimensional pouch structure. The non-woven patch is folded back to create a vertical pouch dimension that captures excess fluid, preventing it from reaching the garment layer. This dimensional change allows the absorbent core to remain smaller while still preventing overflow.
3Ease of operation
If males urinate toward the front of the insert, then the natural urination direction is maintained, but excess fluid overflows the absorbent core
Solution Approach 1:
The pouch is preliminarily formed at the front of the insert where excess fluid is most likely to occur during male urination. This pre-formed pouch structure is ready to intercept and redirect fluid before it can overflow, anticipating the problem rather than reacting to it.
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 solution effectively redirects excess fluid to the absorbent core, minimizing leakage and enhancing the product's ability to contain bodily fluids.
Implementation Method 1
The barrier also directs fluid flow to the absorbent core and militate against fluid overflow onto the garment layer
Implementation Method 2
The absorbent insert has a top layer that is fluid-permeable, an absorbent core, and a base layer that is fluid-impermeable
Implementation Method 3
a moisture absorbent insert containing a core with absorbent materials such as wood pulp, tissue wadding, foams, non-woven, batting
Data Source
AI summary
A disposable absorbent underwear product includes a garment layer, an absorbent insert, a non-woven patch, and a barrier. The absorbent insert has a fluid-impermeable base layer, an absorbent core, and a fluid-permeable top layer. The non-woven patch covers an end of the absorbent insert. A first portion of the non-woven patch is adhered to both the fluid-permeable top layer of the absorbent insert and the garment layer with an adhesive. A second portion of the non-woven patch is free and forms a pouch. An end portion of the absorbent core is disposed adjacent to the second portion of the non-woven patch. The barrier extends along a width of the absorbent insert. The barrier extends through the fluid-permeable top layer of the absorbent core and connects the fluid-impermeable base layer and the one non-woven patch to direct fluid flow to the absorbent core and militate against fluid overflow.