Non-Elasticated Cuff Structure for Absorbent Article Leakage Control
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Solution Overview
Problem
Existing absorbent articles with elasticated barrier cuffs are uncomfortable for daily use and increase production costs, while omitting them compromises leakage protection, especially for small exudate volumes.
Innovation Solution
Incorporating non-elasticated cuffs with a minimum width and stiffness, which lift off the topsheet during use to provide lateral leakage protection, using multiple layers and folds to enhance stiffness and hydrophobicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elasticated barrier cuffs are used, then lateral leakage protection is improved, but user comfort deteriorates and production cost increases
Solution Approach 1:
The patent changes the key parameters of the cuff by removing elasticity while specifying minimum width (at least 8mm) and minimum stiffness (at least 0.04 g*cm). These parameter changes allow the cuff to stand up and provide leakage protection without the discomfort and cost of elastic materials, resolving the contradiction between protection and comfort
2Reliability
If elasticated barrier cuffs are used, then lateral leakage protection is improved, but production cost increases
Solution Approach 1:
By changing the material parameters to non-elasticated with specified minimum stiffness, the patent eliminates the need for expensive elastic materials while maintaining leakage protection functionality, thereby reducing production costs
Solution Approach 2:
The patent employs a disposable absorbent article with a non-elasticated cuff that provides sufficient protection for its intended use period without requiring durable, expensive elastic components, aligning with the disposable nature of the product
3Ease of operation
If barrier cuffs are omitted, then user comfort is improved, but lateral leakage protection deteriorates
Solution Approach 1:
The patent introduces non-elasticated cuffs with specific parameter thresholds (width ≥8mm, stiffness ≥0.04 g*cm) that enable the cuff to stand up and provide leakage protection, thereby maintaining reliability while avoiding the discomfort of elasticated cuffs
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 non-elasticated cuffs effectively prevent lateral leakage without compromising user comfort and reduce production costs, offering sufficient protection against sudden exudate insults.
Implementation Method 1
each of said cuffs has a cuff stiffness of at least 0.04 g*cm. Non-elasticated cuffs as described herein lie flush with the topsheet following manufacture of the absorbent article. Having a non-elasticated cuff of a certain width (i.e., the distance from proximal end to distal end of the cuff) and of a minimum stiffness provides a cuff that, when the absorbent article is disturbed (for example, during normal use), will stand-up relative to the topsheet, thus providing an effective barrier against lateral leakage of exudates
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
An absorbent article having a chassis formed of a topsheet and backsheet, and an absorbent core disposed between the topsheet and backsheet. First and second non-elasticated cuffs are provided on a body facing surface of the absorbent article on opposite sides of a longitudinal centerline. Each of the cuffs has a proximal end attached to the chassis and a distal end extending towards the centerline, wherein the width of the cuff measured between the proximal end and the distal end is at least 3 mm. Cuffs of the absorbent article may either incorporate a fold at the distal end to form cuffs with at least two layers or have a minimum cuff stiffness of at least 0.04 g*cm.