Absorbent Article Adhesive Stripe Layout for Secure, Gentle Removal
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Solution Overview
Problem
Existing absorbent articles face challenges in balancing adhesive strength for secure attachment with comfort and minimizing the risk of tearing during removal, while also considering the impact of adhesive distribution on overall stiffness and flexibility.
Innovation Solution
A patterned application of fastening adhesive on the garment-facing side of the backsheet, comprising specific stripe configurations that optimize adhesive placement to enhance fit, comfort, and reduce the force required for removal, with gaps between stripes allowing flexibility in key sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the amount of adhesive is increased to secure the pad in position, then the adhesion strength is improved, but the overall stiffness of the pad increases making it uncomfortable to use
Solution Approach 1:
The adhesive is applied in a discontinuous pattern rather than uniformly across the entire backsheet. This segmentation allows adhesive to be concentrated in specific high-adhesion zones while leaving other areas adhesive-free, thereby maintaining secure attachment where needed while preserving flexibility and comfort in adhesive-free zones.
Solution Approach 2:
Different regions of the backsheet are assigned different adhesive properties. High-adhesion zones are strategically placed to secure the pad during movement, while low-adhesion or adhesive-free zones are positioned to maintain comfort and flexibility during use.
2Strength
If the amount of adhesive is increased to ensure proper securing, then the retention is improved, but the force required to peel the pad off increases creating tearing risk
Solution Approach 1:
The adhesive is distributed in a discontinuous pattern with multiple separate application zones rather than a single large continuous area. This segmentation reduces the total force required for peeling by distributing the adhesive bonds across multiple smaller zones, lowering the risk of concentrated stress causing backsheet tearing during removal.
Solution Approach 2:
Instead of applying adhesive uniformly across the entire backsheet surface, adhesive is applied partially in specific strategic zones. This partial action provides sufficient retention while reducing the overall adhesive force that would need to be overcome during removal, thereby reducing tearing risk.
3Stability of the object's composition
If adhesive is applied uniformly across the backsheet, then the adhesion is consistent, but the stiffness increases and comfort is reduced
Solution Approach 1:
The uniform adhesive application is replaced with a segmented discontinuous pattern. This segmentation maintains adhesion consistency within each adhesive zone while creating flexibility zones between them, thereby preserving both reliable attachment and user comfort during use.
Solution Approach 2:
The adhesive properties are made non-uniform by applying adhesive only in specific local zones rather than uniformly across the entire backsheet. This local quality approach ensures consistent adhesion where adhesive is present while allowing flexibility and comfort in adhesive-free areas.
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 adhesive pattern ensures secure attachment while reducing the force needed for removal, minimizing tearing risk, and providing enhanced comfort by evenly distributing adhesive, thus improving user experience and reducing adhesive usage.
Implementation Method 1
a fastening adhesive applied on the garment facing surface of the backsheet
Data Source
AI summary
An absorbent article having a front section, a central section and a rear section located along a longitudinal axis is described. A first pattern of adhesive is applied to the central section of a garment facing surface of the backsheet. The first pattern of adhesive has a first plurality of stripes extending substantially parallel to the transverse axis on a first side of the central longitudinal axis. A second plurality of stripes extends substantially parallel to the transverse axis on a second side of the central longitudinal axis. A first gap between the first plurality of stripes and the second plurality of stripes extends over the central longitudinal axis.