Slim Absorbent Article With Compressed Grooves
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Solution Overview
Problem
Existing slim absorbent articles with thin absorbers suffer from low absorption capacity per unit area, leading to fluid diffusion in the plane direction and side leakage, causing discomfort and frequent replacements.
Innovation Solution
The formation of right and left compressed grooves along the longitudinal direction on the absorbent article, combined with a core press that increases fiber density, creates a high absorption area between the grooves to prevent fluid diffusion and leakage, while maintaining a slim design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a thin absorber is used to create a slim absorbent article, then wearing comfort is improved and outer appearance is less influenced, but absorption capacity per unit area decreases and side leakage increases
Solution Approach 1:
The patent applies local quality by creating a high absorption capacity region within the thin absorber through localized compression. The compressed grooves are formed only in specific areas (lateral edges and optionally front/rear edges) rather than uniformly across the entire absorber, allowing different regions to have different functional properties. The compressed regions have increased fiber density for leakage prevention, while uncompressed regions maintain low thickness for comfort.
Solution Approach 2:
The patent segments the absorber into multiple functional regions by forming compressed grooves that divide the absorber structure. These grooves create distinct compressed regions with high fiber density and uncompressed regions with normal density, effectively segmenting the absorption and leakage prevention functions across different spatial zones of the thin absorber.
2Volume of moving object
If a thin absorber is used to reduce thickness, then the absorbent article becomes slimmer and more comfortable, but body fluid diffuses in the plane direction causing side leakage
Solution Approach 1:
The patent addresses fluid diffusion by applying localized compression at the lateral edges of the thin absorber. The compressed grooves create high fiber density regions specifically at the edges where leakage occurs, forming physical barriers that block fluid diffusion paths without increasing the overall thickness of the absorber in the central absorption regions.
Solution Approach 2:
The compressed grooves act as intermediary structures between the thin absorber and the potential leakage paths. These grooves create intermediate high-density fiber regions that serve as barriers to fluid diffusion, effectively mediating between the thin absorber structure and the requirement to prevent side leakage.
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 effectively suppresses fluid diffusion in both width and longitudinal directions, preventing side leakage and enhancing the absorbent's ability to retain fluid, thus improving user comfort and reducing replacement frequency.
Implementation Method 1
the thickness of the absorber is reduced in the thickness direction by forming the core press on the absorber
Implementation Method 2
a high absorption part having a greater absorption capacity per unit area than other parts is formed at least between the right and left compressed grooves of the absorber
Data Source
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AI summary
A core press depressed toward a back-side sheet is formed on at least a surface of an absorber facing an upper-side sheet such that the thickness of the absorber is reduced in the thickness direction, right and left compressed grooves are formed along the longitudinal direction of a sanitary napkin on at least the sides of an area corresponding to a body fluid discharge part of a wearer, and a high absorption part having a greater absorption capacity per unit area than other parts is formed at least between the right and left compressed grooves of the absorber.