Absorbent Core Deformation Guides for Leak Prevention
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Solution Overview
Problem
Disposable absorbent articles, particularly of the third type, face challenges in maintaining absorbent capacity while avoiding bulkiness and ensuring a snug fit around the crotch region, leading to potential leaks and discomfort due to the deformation of the absorbent core when worn.
Innovation Solution
Incorporating deformation guides in the absorbent core within the crotch region, which are designed to be deformed inward by the elastic contraction of the waist panel, forming absorbent barriers that enhance fit and prevent leaks, while maintaining a neat and sporty appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the absorbent core is made large to maintain absorbent capacity, then the absorbent capacity is improved, but the article becomes bulky and loses neat appearance
Solution Approach 1:
The absorbent core is segmented into a front waist region, a rear waist region, and a crotch region with deformation guides. This segmentation allows the core to be compressed into a smaller volume while maintaining the necessary absorbent capacity distributed across different functional zones.
Solution Approach 2:
The absorbent core is nested within the chassis structure, with the core being compressible and deformable to fit within the confined space defined by the chassis and waist panels, achieving a compact form while retaining absorbent functionality.
2Volume of moving object
If the absorbent core is compressed to reduce bulkiness, then the neat appearance is improved, but the fit around the crotch region deteriorates leading to leaks
Solution Approach 1:
The absorbent core is designed with deformation guides that enable it to dynamically change shape during donning. The core transitions from a compressed state during manufacturing/storage to an expanded state when worn, allowing it to adapt to the wearer's body contours and maintain reliable leak prevention.
Solution Approach 2:
The deformation guides are pre-formed in the absorbent core during manufacturing, preparing the core for the shape changes it will undergo during donning. This preliminary structuring ensures that when the waist panel is stretched, the core will deform predictably to form proper barriers against the wearer's skin.
3Ease of operation
If the waist panel is elasticized to provide snug fit, then the fit and comfort are improved, but the absorbent core deforms improperly causing leaks
Solution Approach 1:
The deformation guides act as intermediaries between the elasticized waist panel and the absorbent core. When the waist panel is stretched during donning, the deformation guides mediate the transmission of force, directing the core to deform along predetermined paths that ensure proper barrier formation without compromising leak prevention.
Solution Approach 2:
The deformation guides change the physical parameters of the absorbent core during donning, specifically the shape and orientation parameters. As the waist panel is stretched, the guides transform the core from a compact rectangular form to an expanded form that conforms to the wearer's body, ensuring reliable fit and leak prevention.
4Productivity
If the article is made as pull-on-type for high speed mass production, then the productivity is improved, but the manufacturing complexity increases
Solution Approach 1:
The article is segmented into distinct components (chassis, absorbent core, waist panels, leg cuffs) that can be manufactured separately and then assembled through simple joining operations. This segmentation enables high-speed mass production while managing manufacturing complexity through modular construction.
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 solution effectively prevents leaks by forming absorbent barriers that closely fit the wearer's skin, improving the article's fit and functionality while maintaining a desirable appearance.
Implementation Method 1
the front and rear waist panels are elasticized to be contractible in a circumferential direction around a waist line of the chassis
Implementation Method 2
a pair of deformation guides symmetrically formed about a longitudinal center line in the absorbent core, and opposite lateral zones of the absorbent core are adapted to be deformed inward by intermediary of the deformation guides under elastic contraction of at least a part of the elasticized waist panel lying in the front waist region
Data Source
AI summary
A disposable absorbent wearing article constructed with an absorbent core that may be deformed to form absorbent barriers against body waste and thereby an absorbent chassis that includes the absorbent core may be kept in contact with the wearer's torso with good fitness to improve appearance of the article put on the wearer's body and to prevent leak of body waste. The disposable absorbent wearing article comprising an absorbent chassis and an annular elasticized waist panel wherein the absorbent core of the absorbent chassis is formed with deformation guides so that at least opposite lateral regions of said absorbent core may be deformed along the deformation guides toward the wearer's torso under elastic contraction of at least a front waist panel constituting the annular waist panel.