Absorbent Core Channel Region for Pliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing absorbent articles, such as incontinence liners, lack sufficient pliability to conform effectively to the wearer's anatomy, which affects comfort and functionality.
Innovation Solution
Incorporating a longitudinally extending channel region in the absorbent core with less basis weight and density than the side regions, allowing for increased flexibility and conformity to the wearer's anatomy, while maintaining the same thickness as the side regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the absorbent core is made with uniform density and basis weight throughout, then the structural integrity and absorption capacity are maintained, but the pliability and ability to conform to wearer's anatomy are insufficient
Solution Approach 1:
The absorbent core is designed with non-uniform basis weight distribution, featuring lighter channel regions (50-70 gsm) flanked by heavier side regions (200-400 gsm). This local quality variation allows the core to be more pliable in channel regions for conforming to anatomy while maintaining structural integrity and absorption capacity in side regions.
2Ease of operation
If the basis weight of the absorbent core is reduced to improve pliability, then the flexibility increases, but the absorption capacity may be compromised
Solution Approach 1:
Different regions of the absorbent core are assigned different basis weights according to their functional requirements. Channel regions have lower basis weight (50-70 gsm) for flexibility and conformability, while side regions have higher basis weight (200-400 gsm) for absorption capacity, achieving both goals simultaneously.
Solution Approach 2:
The absorbent core is segmented into functionally distinct regions: lighter channel regions for flexibility and heavier side regions for absorption. This segmentation allows each region to be optimized for its specific purpose without compromising the overall performance of the core.
3Quantity of substance
If the absorbent core uses high basis weight material to ensure absorption capacity, then the absorption performance is improved, but the product stiffness increases and comfort decreases
Solution Approach 1:
The absorbent core employs local quality variation with heavy side regions (200-400 gsm) providing absorption capacity and light channel regions (50-70 gsm) providing softness and comfort. This spatial differentiation of material properties resolves the contradiction between absorption performance and wearer comfort.
Data Source
AI summary
An absorbent article has a longitudinal direction, a transverse direction and a thickness direction, and includes a fluid permeable topsheet, a fluid impermeable backsheet and an absorbent core enclosed between the topsheet and the backsheet having, in the longitudinal direction, a front section, a rear section and a crotch section between the front section and the rear section. The absorbent core has two longitudinally extending side regions being spaced apart in the transversal direction by at least one longitudinally extending channel region. The channel region is of less basis weight than the side regions.