Absorbent Article Embossed Elastic Side Panels Fastening
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Solution Overview
Problem
Conventional absorbent articles, such as diapers, face issues with fastening tabs coming off due to forces during use, primarily due to poor adhesion between nonwoven surfaces and fastening systems, leading to reduced strength and durability at the outermost corners.
Innovation Solution
The absorbent article incorporates embossed grooves along the distal end portion of elastic side panels, extending at least 30% to 100% of the fastening tab's width, combined with a low-viscosity adhesive for improved attachment, ensuring stronger and more durable fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional adhesive bonding is used to attach fastening tabs to elastic side panels, then the manufacturing process is simple, but the fastening strength is insufficient and tabs detach during use
Solution Approach 1:
The elastic side panel is segmented by creating embossed grooves that divide the adhesive bonding area into multiple zones. These grooves create a stepped or segmented adhesive interface that increases mechanical interlocking and distributes bonding stress, preventing tab detachment while maintaining manufacturing simplicity
Solution Approach 2:
The embossed grooves are strategically positioned at specific locations on the elastic side panel where adhesive bonding occurs. This local modification creates enhanced bonding zones without requiring complex overall structural changes, improving fastening strength at critical interfaces while keeping the overall device simple
2Ease of operation
If nonwoven material is used for the elastic side panel, then comfort and flexibility are improved, but adhesion to fastening tabs deteriorates due to fiber pull-out
Solution Approach 1:
The embossed grooves modify the physical parameters of the nonwoven material surface by creating controlled deformations and compression zones. This changes the surface topology and mechanical properties locally, enhancing adhesive bonding through increased surface area and mechanical interlocking while preserving the overall comfort and flexibility of the nonwoven material
Solution Approach 2:
The solution creates a composite structure at the bonding interface by combining the nonwoven elastic side panel with embossed grooves and adhesive material. This composite approach leverages the flexibility of the nonwoven material while the embossed grooves provide mechanical anchoring points that prevent fiber pull-out, achieving both comfort and strong adhesion
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 enhances the shear force resistance between the elastic side panels and fastening tabs, preventing detachment during use and improving the overall durability and comfort of the absorbent article.
Implementation Method 1
at least one fastening tab adhesively attached to said distal end portion of each elastic side panel
Data Source
AI summary
An absorbent article including a chassis, a pair of opposed elastic side panels attached to the chassis, and at least one fastening tab adhesively attached to each elastic side panel. The at least one fastening tab has a length in the transverse direction of the article and a width in the longitudinal direction of the article and each elastic side panel is embossed on at least a portion thereof, which is adhesively attached to the respective fastening tab, to form at least one embossed groove extending along at least 30%, preferably at least 40% and more preferably at least 60% of the width of the at least one fastening tab.