Absorbent Article With Variable Height And Body Adhesive
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Solution Overview
Problem
Conventional absorbent articles fail to provide discretion, comfort, and a close-to-body fit, often experiencing twisting and leakage due to their design and attachment methods, which can lead to embarrassment and discomfort for wearers.
Innovation Solution
An absorbent article with a unique design featuring a variable height absorbent system, lines of weakness, and a body adhesive positioned on the topsheet layer to adhere directly to the skin, allowing for a flexible and secure fit without the need for undergarment attachment, and incorporating features like notches and secondary topsheets for enhanced comfort and leakage protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If absorbent articles are attached to undergarment using garment attachment adhesive, then the product is secured to undergarment, but the article experiences twisting, contorting, and shifting out of place during movement
Solution Approach 1:
The patent inverts the traditional attachment approach by attaching the absorbent article directly to the wearer's body instead of to the undergarment. The body-facing surface of the absorbent article includes adhesive that bonds to skin, while the garment-facing surface has a smooth, low-friction coating that allows the article to move freely with body movements without twisting or contorting.
Solution Approach 2:
The patent applies different surface properties to different regions of the absorbent article. The body-facing surface has high adhesion to bond to skin, while the garment-facing surface has low friction to prevent twisting and allow free movement. This local differentiation of surface properties resolves the contradiction between secure attachment and shape stability.
2Quantity of substance
If absorbent articles are made with traditional size and shape for undergarment attachment, then the article provides adequate absorbency, but the article is perceptible through clothing and lacks discretion
Solution Approach 1:
The patent concentrates the absorbency function in a small, localized region of the absorbent article that contacts the body directly, while the overall article dimensions are minimized to reduce perceptibility through clothing. The absorbent core is positioned to match the localized area of potential exudate discharge, providing adequate absorbency in a compact, discreet form factor.
3Ease of operation
If absorbent articles are attached directly to skin with adhesive, then the article conforms to body and provides comfort, but the adhesive may cause skin irritation and detachment during use
Solution Approach 1:
The patent applies adhesive only to specific regions of the body-facing surface where contact with skin is necessary for attachment, while leaving other regions adhesive-free to reduce skin irritation. The adhesive is positioned to provide secure bonding at key attachment points while maintaining comfort in sensitive areas.
Solution Approach 2:
The garment-facing surface is designed with a smooth, low-friction coating that replicates the properties of natural skin, allowing the article to move with body movements without creating shear forces that would cause adhesive detachment or skin irritation.
4Ease of manufacture
If absorbent articles have uniform height, then the article is simple to manufacture, but the article does not conform to body contours and causes discomfort
Solution Approach 1:
The absorbent article is divided into multiple regions with different heights: a first region with a first height and a second region with a second height. This segmentation allows the article to conform to body contours while maintaining manufacturing feasibility through modular construction of the absorbent core and surrounding layers.
Solution Approach 2:
The patent introduces height variation in the depth direction to achieve body conformability. By varying the height of different regions in the depth dimension, the article can adapt to three-dimensional body contours while the top and bottom surfaces remain relatively simple for manufacturing.
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
The absorbent article provides effective leakage protection, comfort, and discretion by conforming to the body, minimizing movement-induced detachment and enhancing skin contact, thus preventing stains and irritation.
Implementation Method 1
a body adhesive positioned on a portion of the body facing surface of the tospheet layer, the body adhesive comprising an interior perimeter separated by a spatial distance from the perimeter edge of the absorbent system
Implementation Method 2
an absorbent system positioned between the topsheet layer and the backsheet layer, the absorbent system comprising an absorbent core and a perimeter edge
Data Source
AI summary
An absorbent article can be configured to adhere to the body of a wearer in the area of the body of the wearer that may need bodily fluids absorbed. The absorbent article can be adhered to the body of the wearer to or around the vulva region of the body. The absorbent article can have an absorbent assembly which has a variable height in the longitudinal direction of the absorbent article.