Absorber Embossing for Perineal Leakage Prevention
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Solution Overview
Problem
Existing absorptive articles, such as sanitary napkins and incontinence pads, fail to maintain close contact with the body, particularly the perineal region, leading to back leakage due to the simple arcuate curves of the absorber shapes, which do not effectively cover the complex shape of the blood extrusion portion.
Innovation Solution
The absorptive article features a centrally high portion with embosses on either side, including first and second bulging embosses, an intermediate arcuate emboss, and rear side embosses, which are designed to extend along the longitudinal direction and form enlarged and reduced areas, ensuring close contact with both the blood extrusion port and the perineal region, thereby preventing back leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If simple arcuate curves are used for the absorber shape, then the manufacturing process is simple, but the contact with the perineal region is insufficient causing back leakage
Solution Approach 1:
The absorber is divided into multiple functional regions with different emboss patterns: a first emboss pattern for the blood extrusion portion and a second emboss pattern for the perineal region. This segmentation allows each region to be optimized for its specific function while maintaining overall manufacturing simplicity through systematic pattern design.
Solution Approach 2:
Different emboss patterns are applied to different locations of the absorber: the first emboss pattern with specific curvature radii is used for the blood extrusion portion, while the second emboss pattern is used for the perineal region. This local differentiation ensures optimal contact and absorption performance in each region without complicating the overall manufacturing process.
2Device complexity
If the absorber is designed to cover only the blood extrusion port, then the structure is simple, but the perineal region remains uncovered causing back leakage
Solution Approach 1:
The absorber structure is segmented into distinct functional zones: a front portion for blood extrusion and a rear portion for perineal coverage. The emboss patterns are correspondingly segmented, with the first pattern extending to the blood extrusion port and the second pattern covering the perineal region, ensuring comprehensive protection without excessive structural complexity.
Solution Approach 2:
The emboss patterns extend in the longitudinal direction of the absorber, creating a dimensional progression from the blood extrusion port toward the perineal region. This longitudinal extension ensures coverage of both regions while maintaining a relatively simple planar structure that can be manufactured efficiently.
3Reliability
If embosses are formed to extend in the longitudinal direction, then the contact with the body is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The emboss patterns are defined by specific geometric parameters including curvature radii (R1, R2, R3, R4) and extension distances (L1, L2). By establishing clear parameter ranges and relationships between different emboss regions, the design balances improved body contact with manufacturable precision requirements, allowing for consistent production while achieving reliable perineal coverage.
Data Source
AI summary
An absorptive article includes a centrally high portion formed in the widthwise central portion of a napkin and made high on the side of a using face and a pair of left and right embosses formed individually on the two sides of the centrally high portion and extending substantially in the longitudinal direction of the napkin. The paired left and right embosses include a first bulging emboss having its individual emboss lines so formed of curves having centers of curvature on the center side of the napkin as to form an enlarged area of the emboss spacing width and a second bulging emboss having its individual emboss lines so formed of curves having centers of curvature on the center side of the napkin as to continue to the rear portion of the first bulging emboss through an intermediate arcuate emboss formed of curves having centers of curvature on the outer side of the napkin.