Multi-Color Wetness Indicators for Absorbent Articles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wetness indicators for absorbent articles can be difficult to understand, leading to improper timing of article changes, resulting in either underutilization or overflow and leaks.
Innovation Solution
Incorporating multiple color visual fullness indicators that change from green to yellow and then red, indicating increasing levels of absorbent article fullness, providing clear visual signals for the wearer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single color wetness indicator is used, then the device complexity is reduced, but the ease of operation deteriorates because the indicator is difficult to understand
Solution Approach 1:
The indicator is divided into multiple color zones (first color indicating initial wetness, second color indicating increased wetness, third color indicating saturation) that change sequentially. This segmentation allows the indicator to convey multiple pieces of information about absorbent capacity utilization, making it easier to understand while maintaining reasonable complexity through a systematic multi-stage design.
Solution Approach 2:
The indicator utilizes progressive color changes from a first color to a second color and then to a third color to communicate different levels of absorbent capacity utilization. These distinct color transitions provide intuitive visual feedback that is easy to understand, directly addressing the ease of operation requirement while the structured color change mechanism manages the complexity.
2Reliability
If the absorbent article is changed too soon, then the reliability of preventing leaks is improved, but the loss of time increases due to unnecessary changes
Solution Approach 1:
The multi-color indicator provides continuous visual feedback about the absorbent capacity utilization level. By monitoring the progression from the first color to the second color and then to the third color, the wearer receives timely information about when the article is approaching saturation, enabling changes at the optimal moment to prevent leaks while avoiding unnecessary early changes.
Solution Approach 2:
The indicator shows the approaching saturation level in advance through the progression to the second and third colors before complete saturation occurs. This preliminary warning allows the wearer to plan and execute the change at the appropriate time, preventing leaks while minimizing unnecessary changes by providing advance notice rather than waiting for saturation to occur.
3Loss of time
If the absorbent article is changed too late, then the loss of time is reduced by avoiding unnecessary changes, but the reliability deteriorates due to leaks
Solution Approach 1:
The progressive color changes provide continuous feedback about the absorbent capacity status, with the third color serving as a clear warning signal that saturation is approaching. This feedback mechanism ensures timely detection of the need for change, maintaining reliability by preventing leaks while optimizing time efficiency by avoiding both early and late changes.
Solution Approach 2:
The indicator provides preliminary warning through the second and third color stages before complete saturation occurs, giving the wearer advance notice to perform the change at the optimal time. This preliminary indication prevents late changes that could result in leaks while maintaining time efficiency by clearly signaling when change is necessary.
4Measurement precision
If multiple color indicators are used, then the measurement precision of absorbent capacity utilization is improved, but the device complexity increases
Solution Approach 1:
The indicator is segmented into distinct color zones that correspond to different levels of absorbent capacity utilization. This segmentation provides precise measurement information through clearly defined color stages, improving measurement precision while the systematic segmentation approach manages the structural complexity through an organized multi-zone design.
Solution Approach 2:
The use of distinct color changes (first color, second color, third color) provides precise visual measurement of absorbent capacity utilization levels. Each color transition represents a specific threshold, improving measurement precision through clear visual differentiation while the consistent color change mechanism manages the complexity through a predictable pattern.
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 multiple color indicators ensure the absorbent article is changed after its capacity is utilized and before leaks occur, enhancing user confidence and preventing accidents.
Implementation Method 1
a first visual fullness indicating area configured to change to green, a second visual fullness indicating area configured to change to yellow, and a third visual fullness indicating area configured to change to red
Data Source
AI summary
A disposable wearable absorbent article comprises a topsheet, an absorbent core, an outer cover, a waist opening, leg openings, a first visual fullness indicating area, and a second visual fullness indicating area. The first visual fullness indicating area is configured to change to a first subsequent color when indicating the presence of a bodily exudate. The second visual fullness indicating area is configured to change to a second subsequent color when indicating the presence of a bodily exudate. The second subsequent color is visually distinguishable from the first subsequent color. At least a portion of each of the visual fullness indicating areas is visible from outside of the disposable wearable absorbent article when the article is worn by a wearer.