Segmented Absorbent Layer Design for Leakage and Waste Reduction
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Solution Overview
Problem
Absorbent personal care articles face challenges with leakage and material waste during manufacturing, as existing layered structures often require inefficient use of materials and result in unused center portions, limiting the introduction of desirable topographical features like hump-like elements for improved fit and stability.
Innovation Solution
The development of absorbent articles with layers separated into discrete portions along the longitudinal direction, made from the same material, where each portion provides different functionality, such as guiding fluid and enhancing close-to-body fit, reducing material waste and manufacturing inefficiencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If layers with openings are used to direct exudates to lower absorbent core layers, then fluid collection is improved, but manufacturing material waste increases due to unused center portions
Solution Approach 1:
The additional layer is divided into discrete portions positioned along the longitudinal direction of the absorbent article. Each portion is separated from adjacent portions, creating a segmented structure that eliminates unused center portions while maintaining functional openings for fluid collection and direction.
Solution Approach 2:
The discrete portions are configured with specific local properties - each portion contains openings positioned to direct exudates to lower absorbent core layers. The portions are made from the same base sheet material but are strategically positioned and shaped to provide localized fluid management functions where needed.
2Ease of operation
If hump-like elements are added to enhance close-to-body fit and stability, then article fit is improved, but manufacturing complexity and material costs increase
Solution Approach 1:
The hump-like elements are merged with the additional layer that contains the discrete portions with openings. Both the shaping function (hump) and the fluid direction function (openings) are integrated into a single layer structure, eliminating the need for separate components and reducing manufacturing complexity.
Solution Approach 2:
The additional layer serves multiple functions simultaneously: it provides hump-like shaping for close-to-body fit, contains discrete portions with openings for fluid direction, and is made from the same base sheet material as other layers for manufacturing efficiency. This multi-functionality reduces overall article complexity.
3Reliability
If multiple topographical features are integrated into the article, then performance is improved, but material waste during manufacturing increases
Solution Approach 1:
By segmenting the additional layer into discrete portions, the design allows multiple topographical features (openings, humps) to be created from the same material without generating unused center portions. Each discrete portion is precisely shaped and positioned to provide specific functions.
Solution Approach 2:
The additional layer with discrete portions provides multiple functions - fluid collection through openings, fluid direction to lower layers, close-to-body fit through hump-like shaping, and stability. All these features are integrated into layers made from the same base sheet material, maximizing material utilization.
Data Source
AI summary
An absorbent article is provided. The article includes at least one additional layer non-integral with the absorbent layer, and positioned upon the absorbent layer. The additional layer includes at least first and second discrete portions positioned along the longitudinal direction. The at least first and second discrete portions are spaced apart from each other along the longitudinal direction. The portions are constructed of the same base sheet material and the first portion at least partially defines an opening therein with an opening inner edge. The second portion is of a shape mated to fit along its periphery edge, at least partially within the opening. The second portion is of a shape complementary with the opening shape. Edges of the first and second portion are complementary, the inner edge of the first portion being complementary with the periphery edge of the second portion.