Absorbent Article Hump With Protuberance And Recess
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Solution Overview
Problem
Absorbent articles deform and crumble during use due to squeezing forces, leading to reduced absorption capacity and increased leakage risk, and existing hump elements in prior art cause material waste and ineffective leakage prevention.
Innovation Solution
An absorbent article with a hump element in the crotch portion, featuring a protuberance on the front side edge and a recess on the back side edge, which maintains the article's shape and prevents deformation, enhancing absorption speed and fit, while a cost-effective manufacturing method minimizes material waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a hump element is incorporated to enhance absorption speed, then absorption speed is improved, but material waste increases during manufacturing
Solution Approach 1:
The hump element is integrated as a shaped region within the absorbent core itself, segmented from the core material rather than being a separate component. This allows the hump to be formed by redistributing or reconfiguring existing core materials (fluff pulp, superabsorbent particles) into a raised three-dimensional structure, eliminating the need for separate hump materials and reducing waste.
Solution Approach 2:
The hump element and absorbent core are merged into a single integrated structure. The hump is formed as a raised portion of the absorbent core material between the topsheet and backsheet, combining the functions of fluid absorption and three-dimensional shaping into one unified component, thereby eliminating material waste from separate hump elements.
2Adaptability or versatility
If the absorbent article is pressed between the user's legs during use, then fit is improved, but the article deforms and crumbles leading to leakage
Solution Approach 1:
The hump element introduces a three-dimensional curved or raised structure into the otherwise flat absorbent article. This curvature creates a convex profile in the crotch region that resists compression from the user's thighs, preventing the article from crumbling or forming uncontrolled wrinkles while maintaining intimate contact with the body for proper fit.
Solution Approach 2:
The hump element changes the physical parameters of the absorbent article in the crotch region by creating a raised three-dimensional structure with increased thickness and altered stiffness. This structural modification allows the article to withstand lateral squeezing forces from the user's legs without deforming or crumbling, while still maintaining adaptability for proper fit.
3Speed
If prior art hump elements are used, then absorption speed is enhanced, but leakage still occurs
Solution Approach 1:
The hump element is positioned specifically in the crotch region where fluid discharge occurs, concentrating the absorption enhancement function where it is most needed. The raised three-dimensional structure creates a localized fluid reservoir and distribution zone that rapidly absorbs and distributes fluid laterally to the absorbent core, preventing leakage at this critical location.
Solution Approach 2:
The hump element transitions from a two-dimensional flat structure to a three-dimensional raised form, adding vertical dimension to the absorbent article. This three-dimensional structure creates additional fluid distribution pathways and increases the surface area for fluid contact, enhancing absorption speed while the structured form prevents uncontrolled deformation that leads to leakage.
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
An absorbent article, the absorbent article being a personal hygiene article, which article has a longitudinal direction and a transverse direction, a front portion, a rear portion and a crotch portion located between the rear portion and the front portion. The article comprising a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent core enclosed between the topsheet and the backsheet, and a hump arranged substantially in the crotch portion between the topsheet and the backsheet and extending in the longitudinal direction of the article. The hump having an essentially rectangular form with a first and a second longitudinal side edge extending in the longitudinal direction of the article, a front transverse side edge extending in the transverse direction towards the front portion of the article, a back transverse side edge extending in the transverse direction towards the rear portion of the article, wherein said front transverse side edge of said hump comprises a protuberance and said back transverse side edge of said hump comprises a recess.