Refastenable Absorbent Article Asymmetric Chassis Widths
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Solution Overview
Problem
Existing absorbent articles with refastenable seams face challenges in providing a proper fit and comfort due to the difficulty in aligning and engaging refastenable fasteners, which affects their adaptability and usability as both diapers and pants.
Innovation Solution
A method for forming absorbent articles with refastenable seams involves attaching elastomeric side panels to a web with a bodyside liner, forming chassis widths, and severing to create individual articles, where the ratio of chassis widths can vary between 1.5 and 3.0, and incorporating mechanical fastening components that overlap waistband materials for improved fit and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If refastenable fasteners are positioned at the side of the wearer, then the article can be applied like a conventional diaper, but the alignment and engagement of fasteners becomes difficult affecting proper fit
Solution Approach 1:
The fastening components are pre-positioned on the article at specific locations relative to the chassis width. The front waistband material is attached to extend beyond the side edges of the absorbent chassis, with fastening components positioned on this extending portion. This preliminary positioning ensures proper alignment when the article is applied, resolving the contradiction between ease of application and fastener alignment precision.
2Adaptability or versatility
If the absorbent article is designed to be refastenable, then it can be used as training pants, but it loses the ability to be easily applied like a conventional diaper
Solution Approach 1:
The article incorporates refastenable fastening components that allow dynamic adjustment of the article configuration. The front waistband material extends beyond the side edges with fastening components positioned to enable the article to be applied in multiple modes - either quickly like a conventional diaper or adjusted like training pants. This dynamic fastening system provides versatility while maintaining ease of application.
3Reliability
If the ratio of rear chassis width to front chassis width is increased, then the fit and comfort of the article is improved, but the manufacturing complexity increases
Solution Approach 1:
The absorbent chassis is designed with asymmetric width proportions where the rear chassis width is greater than the front chassis width, with the ratio being at least 1.5:1. This asymmetric design improves fit and comfort by accommodating the natural shape of the wearer's body. The front waistband material extends beyond the side edges with fastening components positioned on this extending portion, which simplifies the manufacturing process despite the asymmetric shape by providing a consistent attachment method.
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 method enhances the fit and comfort of absorbent articles by allowing for better alignment of refastenable seams, enabling them to be used as both diapers and pants, and ensures improved manufacturing techniques for producing such articles.
Implementation Method 1
attaching a first elastomeric rear side panel material to a first side edge of the first web and a second elastomeric rear side panel material to a second side edge of the first web
Implementation Method 2
incorporating mechanical fastening components that overlap waistband materials for improved fit and comfort
Data Source
AI summary
Absorbent articles and methods of manufacturing absorbent articles are disclosed. A method for forming a plurality of absorbent articles may comprise advancing a first web in a first direction, attaching first and second elastomeric rear side panel materials to first and second side edges of the first web and forming a first chassis width, attaching first and second elastomeric front side panel materials to the first and second side edges of the first web and forming a second chassis width, and severing the first web through the first and second elastomeric front side panel materials and through the first and second elastomeric rear side panel materials to form a plurality of individual absorbent articles, wherein a ratio of the first chassis width to the second chassis width is between about 1.5 and about 3.0.