Absorbent Article Hip Holding Portion Segmentation
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Solution Overview
Problem
Conventional absorbent articles often fail to fit well along the shape of the buttocks, leading to potential leakage due to inadequate flexibility and a tendency for the hip holding portion to be turned up, causing discomfort and leakage.
Innovation Solution
The absorbent article features a hip holding portion with strategically designed protruding and depressed portions that allow independent deformation, reducing the likelihood of the portion being turned up and enhancing fit, along with a wing portion to prevent side turn-ups and a specific angle configuration for improved attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the hip holding portion is designed with a simple continuous shape, then the structure is simple and easy to manufacture, but it cannot deform independently to fit the curved surface of the buttocks, resulting in poor fit and potential leakage
Solution Approach 1:
The hip holding portion is segmented into multiple independent regions: a first protruding portion, a first depressed portion, and a second protruding portion. These segments can deform independently when applied to the curved surface of the buttocks, allowing each region to adapt to different contours without restricting the movement of adjacent regions. This segmentation resolves the contradiction by enabling complex adaptive shaping while maintaining a relatively simple overall structure.
Solution Approach 2:
The hip holding portion incorporates curved surfaces including protruding portions that extend outward and depressed portions that create concave regions. These curved features allow the rigid or semi-rigid material to conform to the rounded contours of the buttocks, improving fit and preventing leakage while maintaining structural integrity.
2Stability of the object's composition
If the hip holding portion is made rigid to maintain structural integrity, then the shape is stable, but it cannot flexibly deform along the roundness of the buttocks, causing gaps and potential fluid leakage
Solution Approach 1:
By dividing the hip holding portion into discrete protruding and depressed portions, the structure achieves both rigidity and flexibility. Each segment maintains its own structural integrity while the collection of segments can adapt to varying contours. The segmented design allows controlled deformation at segment boundaries while preserving overall structural stability.
Solution Approach 2:
Different regions of the hip holding portion are designed with different geometric qualities - protruding portions provide structural support and stability, while depressed portions create flexibility and conformability. This local differentiation of structural properties allows the single component to simultaneously achieve both rigidity and adaptability.
3Area of stationary object
If the second protruding portion has a large width from the centerline, then it provides adequate coverage area, but it is likely to be turned up due to leg movement, causing discomfort and potential leakage
Solution Approach 1:
The hip holding portion is divided into the first protruding portion, first depressed portion, and second protruding portion as separate functional segments. This segmentation allows the second protruding portion to be optimized for resistance to turn-up while the overall structure maintains adequate coverage area through the combined effect of all segments.
Solution Approach 2:
The second protruding portion is designed with specific local geometric characteristics that differ from other regions. By optimizing the width and shape of this specific region, the design achieves enhanced resistance to turn-up forces from leg movement while the broader hip holding portion maintains sufficient coverage area.
4Reliability
If the hip holding portion is designed to tightly fit the buttocks, then leakage prevention is improved, but the risk of the portion being turned up increases, causing discomfort
Solution Approach 1:
The segmented design with multiple protruding and depressed portions allows the structure to achieve tight fit for leakage prevention while distributing mechanical stresses. When leg movement occurs, the segments can move independently, reducing the likelihood of the entire portion turning up and causing discomfort.
Solution Approach 2:
The curved surfaces of the protruding and depressed portions are designed to match the natural contours of the buttocks. This curvature allows the hip holding portion to conform tightly to the body shape for effective leakage prevention while the rounded geometry naturally distributes pressure and reduces stress concentration points that would cause turning up.
Data Source
AI summary
An absorbent article includes a body and a hip holding portion. The body has a shape having a predetermined length in a front-rear direction and a predetermined width in a direction perpendicular to the front-rear direction. The hip holding portion includes a side region protruding from a rear side portion of the body and a rear region protruding from the rear end of the body, and includes a first protruding portion including a portion where the width of the body from a centerline in the front-rear direction is largest, a first depressed portion forward of and adjacent to the first protruding portion, and a second protruding portion forward of and adjacent to the first depressed portion in the side region. The width of the second protruding portion from the centerline is smaller than or equal to the smallest width of the first depressed portion from the centerline.