Absorbent Article Fastening System with Nested Secondary Components
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Solution Overview
Problem
Conventional absorbent articles, such as diapers, face issues with leakage and secure attachment due to loose fastening systems, especially during wearer movement, and suffer from packaging and manufacturing drawbacks like delamination and tearing, caused by secondary fastening components being exposed or engaging other diapers.
Innovation Solution
An absorbent article with a secondary fastening system that includes hook and loop fasteners, where the secondary first fastening components are positioned inside the diaper during folding to avoid external exposure, ensuring secure attachment and reducing packaging issues, and are designed for easy engagement with the outer cover to maintain the folded configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If secondary fastening components are positioned outside the diaper during folding, then they are easily accessible for fastening, but they become exposed and may engage other diapers causing packaging damage
Solution Approach 1:
The secondary fastening components are nested inside the folded diaper structure, specifically positioned within the front portion when folded. This nesting approach prevents external exposure and engagement with other diapers while maintaining functionality during wear.
Solution Approach 2:
The diaper is folded in a predetermined manner during manufacturing that automatically positions the secondary fastening components inside the folded structure. This preliminary folding action ensures proper component placement before packaging, preventing packaging damage.
2Loss of information
If secondary first fastening components are disposed on an outside of the folded diaper, then they are visible and accessible, but they engage adjoining diapers causing delamination and tearing
Solution Approach 1:
The secondary fastening components are nested within the folded diaper structure rather than exposed on the outside. This positioning maintains their visibility and accessibility during wear while preventing them from engaging with adjoining diapers in the package.
Solution Approach 2:
The patent applies different positioning strategies to different fastening components: primary fastening components remain accessible on the outside, while secondary fastening components are positioned inside the folded structure. This localized differentiation resolves the contradiction between visibility and packaging integrity.
3Device complexity
If only one fastening system is used, then the article structure is simpler, but shear stress from wearer movement causes fastening tabs to loosen or come unfastened
Solution Approach 1:
The fastening system is segmented into two independent systems: a primary fastening system and a secondary fastening system. Each system operates independently to provide attachment, with the secondary system positioned to resist shear stresses from wearer movement that would affect a single fastening system.
Solution Approach 2:
The secondary fastening system acts as a preventive measure against the failure of the primary fastening system. By providing an additional fastening mechanism positioned to counteract shear stresses, it cushions against the harmful effect of movement-induced loosening before it causes complete failure.
4Reliability
If secondary fastening components are positioned near the absorbent core, then they provide secure attachment, but they become exposed during folding causing packaging issues
Solution Approach 1:
The diaper folding process is designed in advance to automatically position the secondary fastening components inside the folded structure. This preliminary action during manufacturing ensures that components near the absorbent core are properly positioned without causing packaging issues.
Solution Approach 2:
The solution moves the secondary fastening components from a two-dimensional surface position to a three-dimensional internal position within the folded diaper structure. This dimensional change allows them to maintain their secure attachment function while being hidden from external engagement.
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 provides enhanced security against leakage and improved mobility for the wearer by maintaining a secure fastening system while preventing packaging-related damages and simplifying the unfolding process without causing delamination or tearing.
Implementation Method 1
a secondary fastening system comprising secondary first fastening components and at least one corresponding secondary second fastening component, wherein the secondary first fastening components are adapted for refastenable engagement to the secondary second fastening component
Data Source
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AI summary
An absorbent article has a chassis, a pair of ears extending transversely outward from opposite sides of the chassis, and a fastening system comprising a primary fastening system and a secondary fastening system. The secondary fastening system includes a secondary second fastening component located on each of the ears and a corresponding secondary first fastening component located on the outer surface of the article at a first waist portion. A ΔΕ value calculated using the Color Contrast Test between the secondary first fastening components uncovered by the ears and the secondary first fastening components covered by the ears is greater than 15.