Absorbent Article Asymmetrical Crotch Ratio Leakage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pant-type disposable absorbent articles face challenges in providing improved wearer comfort and reducing leakage risk, as existing designs often compromise on fit and leakage prevention.
Innovation Solution
The design incorporates a front and back body panel with an absorbent member bridging them, featuring an elasticity gradient and strategically positioned leg elastics, side leakage barriers, and an absorbent member with specific length ratios and attachment portions to enhance fit and leakage protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the article chassis is made of elastically stretchable material to allow easy removal and replacement, then ease of operation is improved, but structural stability and leakage prevention may be compromised
Solution Approach 1:
The absorbent member is segmented into distinct functional zones: an absorbent body portion and extended side leakage barriers. The side leakage barriers extend beyond the absorbent body along the longitudinal edges to provide additional containment. This segmentation allows the elastic chassis to move freely while the extended barriers maintain leakage prevention capability even during wearer movement.
2Reliability
If the absorbent member is positioned to provide extensive coverage, then leakage prevention is improved, but wearer comfort and fit may be compromised
Solution Approach 1:
Different regions of the absorbent member have different properties optimized for their specific functions. The side leakage barriers are positioned at the longitudinal edges where leakage risk is highest, providing extended coverage only where needed. The absorbent body is positioned to align with the wearer's crotch area for optimal comfort. This localized differentiation achieves both extensive coverage for leakage prevention and proper positioning for comfort.
3Reliability
If the side leakage barriers extend along the entire length of the absorbent member, then leakage prevention is improved, but device complexity increases
Solution Approach 1:
The side leakage barriers are merged with the absorbent member as an integrated structure, forming a single composite component. The barriers extend from the longitudinal edges of the absorbent body and are connected to the chassis structure, creating a unified leakage prevention system. This integration reduces the number of separate parts and assembly steps while maintaining comprehensive leakage protection along the entire length.
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 configuration provides improved wearer comfort by ensuring extensive coverage of the buttocks and reduced leakage risk through optimal fit and absorbency, making it suitable for both incontinence guards and baby diapers.
Implementation Method 1
The front body panel is at least partially elasticized. The back body panel is at least partially elasticized. Front leg elastics may be arranged on each leg opening edge of the front body panel, and back leg elastics may be arranged on each leg opening edge of the back body panel.
Implementation Method 2
The absorbent member comprises a liquid permeable top sheet layer, an absorbent body and a liquid impermeable back sheet layer.
Implementation Method 3
The absorbent member comprises a liquid permeable top sheet layer, an absorbent body and a liquid impermeable back sheet layer
Implementation Method 4
The absorbent member comprises a liquid permeable top sheet layer, an absorbent body and a liquid impermeable back sheet layer
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a pant type disposable absorbent article comprising a front body panel (1 ), a back body panel (2), and an absorbent member (3) being attached to and bridging said front body panel and said back body panel. Said front body panel (1 ) comprises a crotch edge (8) and said back body panel comprises a crotch edge (15). An imaginary centre line (29) coinciding with the transverse central axis Y-Y of the absorbent article divides the absorbent article in two parts of equal longitudinal length, and the imaginary centre line (29) divides the intermediate crotch portion (24) of the absorbent member (3) into a front crotch portion (30) having a length L1 and a back crotch portion (31 ) having a length L2, wherein the ratio of the length L2 to the length L1 is L2:L1 <0.4, preferably <0.3, more preferably <0.25; or wherein the crotch edge (15) of the back body panel (2) is located in front of the imaginary centre line (29).