Channel Distribution Material for Absorbent Fluid Management
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Solution Overview
Problem
Existing absorbent articles face challenges in efficiently distributing body exudates, leading to potential leakage and a wet feel, as current solutions like physical barriers and acquisition layers do not adequately address the distribution of exudates, especially for subsequent insults.
Innovation Solution
Incorporating a distribution material with channels that is liquid impermeable, featuring a channel width of 0.1 mm to 2.5 mm and a channel depth that does not extend completely through the material, to facilitate the distribution of fluids within the absorbent assembly, thereby enhancing the absorption and reducing the likelihood of leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical barriers such as leg containment flaps and elastic leg gathers are used to prevent leakage, then leakage prevention is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the fluid distribution function from the traditional absorbent body structure and implements it through a separate distribution layer with channels. This channel-based system handles fluid routing independently, allowing the containment flaps and elastic gathers to focus solely on containment, thereby reducing overall system complexity while maintaining leakage prevention
Solution Approach 2:
The absorbent article is segmented into distinct functional layers: a distribution layer with channels for fluid routing, an absorbent body for absorption, and containment elements for leakage prevention. This segmentation allows each component to be optimized independently, reducing the complexity burden on any single element while collectively improving leakage prevention
2Reliability
If acquisition layers are added to distribute exudates, then fluid distribution is improved, but device complexity increases
Solution Approach 1:
The distribution layer utilizes parameter changes in fluid flow by creating channels with varying depths and configurations. The channels have different depths relative to the distribution layer thickness, creating natural flow paths that distribute fluid without requiring complex active control mechanisms. This passive parameter-based distribution reduces system complexity
Solution Approach 2:
The distribution layer acts as an intermediary between the bodyside liner where fluid is deposited and the absorbent body where fluid is absorbed. The channels in the distribution layer mediate the fluid transfer, providing a controlled distribution path that simplifies the overall system by decoupling the deposition and absorption functions
3Quantity of substance
If more absorbent material is used to handle subsequent insults, then absorption capacity is improved, but the absorbent body becomes thicker and less flexible
Solution Approach 1:
The distribution layer performs preliminary action by distributing fluid across the absorbent body before full absorption occurs. This pre-distribution ensures that subsequent insults are evenly dispersed across the absorbent material, maximizing the utilization of available absorption capacity without requiring excessive material thickness
Solution Approach 2:
The channels in the distribution layer create local variations in fluid delivery to the absorbent body. By concentrating or dispersing fluid to specific regions based on the channel configuration, the system optimizes local absorption efficiency, allowing thinner overall construction while maintaining total absorption capacity
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 channel-based distribution material improves fluid distribution, potentially reducing the amount of absorbent material needed, resulting in a thinner, more flexible absorbent body that prevents pooling and leakage, while maintaining a dry feel for the wearer.
Implementation Method 1
The at least one channel can include a channel width. The channel width can be from 0.1 mm to 2.5 mm. The at least one channel can also include a channel length and a channel depth.
Data Source
AI summary
A material for distributing fluid can include a first side edge, a second side edge, a first end edge, and a second end edge. The material can include a first surface and a second surface opposite from the first surface. The material can be liquid impermeable and at least one of the first surface and the second surface include at least one channel. The channel can include a channel width, a channel length, and a channel depth. The channel width can be from 0.1 mm to 2.5 mm. The channel depth can be configured such that the channel does not extend completely through the material.