Elastic Core Composite Assembly for Disposable Absorbent Articles
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Solution Overview
Problem
Conventional disposable absorbent articles face challenges in creating alternative shapes and functionalities that enhance fit and comfort while maintaining low material costs and minimizing manufacturing complexity, particularly in achieving an hourglass shape for improved absorbency and leakage control.
Innovation Solution
The development of an elastic absorbent assembly with a top and bottom nonwoven layer and a cross-directional elastic construction, where spaced apart elastic elements are sandwiched between the layers to form encapsulating spaces for absorbent material, allowing for flexibility and adjustability in the absorbent core's design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional disposable absorbent articles use traditional absorbent core construction, then manufacturing process is simple, but fit and comfort are limited and leakage control is insufficient
Solution Approach 1:
The absorbent core is divided into multiple encapsulating spaces, each containing absorbent material, bounded by spaced apart elastic elements and nonwoven layers. This segmentation allows different regions to be optimized for specific functions (absorbency, leakage control, fit) while maintaining overall structural integrity
Solution Approach 2:
Different regions of the absorbent core are provided with varying distributions of absorbent material and different configurations of elastic elements to create localized properties. This allows the core to provide enhanced absorbency in certain areas while providing leakage control and fit in other areas, optimizing overall performance
2Ease of operation
If alternative shapes and functionalities are created to enhance fit and comfort, then absorbency and leakage control improve, but material costs increase and manufacturing complexity increases
Solution Approach 1:
The elastic elements serve multiple functions simultaneously: they provide structural support for encapsulating absorbent material, create the desired alternative shapes for improved fit, and function as elastic members for comfort. This merging of functions reduces the need for separate components and simplifies manufacturing
Solution Approach 2:
The nonwoven layers serve multiple purposes: they provide a matrix for supporting absorbent material, form boundaries for encapsulating spaces, and work with elastic elements to create the final three-dimensional shape. This multi-functionality reduces component count and manufacturing complexity
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
This solution enables the creation of absorbent articles with improved fit and comfort by allowing for a wider range of absorbent material distribution and leakage control, while maintaining cost-effectiveness and simplifying the manufacturing process.
Implementation Method 1
the plurality of elastic elements are secured to the at least one nonwoven layer in a stretched condition such that the elastic assembly contracts when the stretched condition is released
Data Source
AI summary
Described herein is an elastic core assembly having a base nonwoven layer, a top nonwoven layer, and a plurality of spaced apart elastics sandwiched therebetween. The elastics are secured to one or both layers and form therewith, a plurality of elongated spaces wherein SAP material is deposited. Also described are s system and method of making the elastic core composite or assembly, and a disposable absorbent article incorporating the elastic core assembly.