Disposable Absorbent Article Silhouette Design for Fit and Leakage
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Solution Overview
Problem
Current adult disposable absorbent articles fail to adequately fit a broad range of body shapes and sizes, leading to issues such as leakage, discomfort, and poor discretion due to their generic design, which does not account for variations in Body Mass Index (BMI) and body shape, resulting in inadequate gasketing and excessive material usage.
Innovation Solution
The development of disposable absorbent articles and arrays that are designed to match specific Body Length-to-Hip and Waist-to-Side Silhouettes, adjusting according to BMI and Waist Circumference, to provide a more tailored fit, improved gasketing, and reduced leakage by using a combination of elastic materials and design parameters like Body Rise-to-Hip Circumference Ratio and Waist Circumference-to-Side Length Ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a generic design with one uniform elastic material is used to fit a broad range of body sizes, then the product can be manufactured simply and sold in large size increments, but the fit quality, gasketing effectiveness, and discretion deteriorate due to excessive material and poor body contouring
Solution Approach 1:
The patent applies local quality by using different elastic materials and strain levels in different regions of the absorbent article. Specifically, the side flaps use different elastic materials than the front and back waist regions, and the elastic strands are prestrained to different percentages (e.g., 5-15% for side flaps vs. 10-20% for waist regions) to match local body shape variations. This regional differentiation allows the article to contour to diverse body shapes while maintaining manufacturability through standardized production processes.
Solution Approach 2:
The patent implements parameter changes by varying elastic material properties and prestrain levels across different product sizes and regions. The prestrain percentage of elastic strands is adjusted as a key parameter to match different body circumferences and shapes. Additionally, the ratio of body rise to hip circumference is used as a design parameter to optimize the article length for different BMI ranges, thereby improving fit quality without sacrificing manufacturing efficiency.
2Adaptability or versatility
If the product length is increased to accommodate larger body sizes, then broader size coverage is achieved, but material waste and bulk between the legs increase leading to leakage and poor discretion
Solution Approach 1:
The patent applies dynamics by making the absorbent article extensible and adaptable to different body sizes within a product category. The elastic materials and prestrained elastic strands allow the article to stretch and conform to various hip circumferences and body shapes. This dynamic adaptability enables a single product design to serve a broader size range (e.g., covering 50-100 pounds of weight variation) without requiring excessive length, thereby reducing material waste and bulk while maintaining leakage protection.
Solution Approach 2:
The patent implements universality by designing the absorbent article to perform multiple functions within a single product: it provides containment, absorption, and adaptive fitting for diverse body types. The side flaps with specific elastic properties serve both as structural components for shaping and as adjustable elements that accommodate different hip widths. This multi-functionality allows one product design to effectively cover a wide size range without requiring multiple specialized sizes, reducing overall material consumption.
3Productivity
If the product is designed to fit larger body increments (up to 100 pounds), then fewer size variants need to be manufactured, but the fit quality and gasketing effectiveness deteriorate across the entire size range
Solution Approach 1:
The patent applies local quality by regionally differentiating elastic material properties within the article. The side flaps use different elastic materials and prestrain levels compared to the front and back waist regions, allowing each region to optimize its fit for local body shape characteristics. This regional customization enables consistent fit quality across diverse body types while maintaining a unified product design that can be manufactured efficiently in a single production line.
Solution Approach 2:
The patent implements parameter changes by systematically adjusting elastic prestrain percentages and material selections across different size variants and regions. These controlled parameter variations allow the manufacturer to produce a family of products with consistent quality standards while accommodating a broad weight range (up to 100 pounds). The use of standardized parameter adjustment protocols maintains manufacturing efficiency while ensuring reliable fit consistency across the entire product line.
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 tailored design enhances the fit and comfort of absorbent articles across various body shapes and sizes, reducing leakage and improving discretion by closely conforming to the body shape, thereby addressing the limitations of existing products that do not account for individual anthropometric variations.
Implementation Method 1
Products comprising one uniform elastic material or a series of uniformly strained strands of material
Data Source
AI summary
An absorbent article or an array of absorbent articles of the present disclosure may have particular Product Length-to-Hip Silhouette(s) and Product Waist-to-Side Silhoutte(s).