Segmented Absorbent Body for Leakage and Stiffness
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Solution Overview
Problem
Conventional absorbent articles face challenges in preventing side leakage and achieving optimal suppleness and adaptation to the wearer's body, often resulting in stiffness that compromises comfort and effectiveness.
Innovation Solution
The absorbent body is segmented using dividing seams or fold lines, creating areas of different density that enhance fluid penetration and transport, while also allowing for better adaptation to body contours by forming stable individual elements that can move relative to each other, thus preventing side leakage and reducing stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the absorbent body is made from continuous absorbent material, then good absorption performance is achieved, but the article lacks suppleness and adaptability to the wearer's body
Solution Approach 1:
The absorbent body is divided into multiple segments separated by dividing seams, allowing each segment to move independently and conform to body contours while maintaining overall absorption functionality through the segmented structure
2Adaptability or versatility
If the absorbent body is segmented into multiple areas, then suppleness and adaptability are improved, but side leakage may occur between segments
Solution Approach 1:
The dividing seams are strategically positioned to create segments with different density characteristics in specific areas, optimizing both adaptability and leakage prevention by localizing structural properties where needed most
3Object-affected harmful factors
If the absorbent material is made denser to prevent side leakage, then leakage protection is improved, but fluid penetration and transport are hindered
Solution Approach 1:
Segmentation creates pathways between segments that facilitate fluid transport while the segmented structure itself prevents lateral leakage, solving the contradiction between density and fluid penetration speed
Solution Approach 2:
Different density characteristics are localized to different regions through segmentation, with certain areas optimized for leakage prevention and others for fluid penetration and transport
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 segmentation improves fluid transport and prevents side leakage, ensuring the absorbent article remains dry and comfortable by allowing the absorbent body to conform closely to the wearer's body, reducing stiffness and enhancing overall performance.
Implementation Method 1
creating areas of different density that enhance fluid penetration and transport
Data Source
AI summary
An absorbent article, such as a sanitary napkin or an incontinence diaper, has an absorbent body having at least one fold line formed therein defining at least two segments of the absorbent body. The segments formed by the at least one fold line are generally foldable relative to each other along the at least one fold line to facilitate conformance of the absorbent article to the wearer's body. In a method of forming the absorbent body, a first cut-out from a first web material is passed through a nip along with a second web material whereby the cut-out from the first web material overlays the second web material. A fold line is then formed in the second web material at the peripheral edge of the cut-out of the first web material as the cut-out and second web material pass through the nip.