Visual Sizing Indicators for Absorbent Article Fit

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Solution Overview

Problem

Adult incontinent briefs and disposable diapers often have ill-fitting issues due to size determination based on limited criteria, leading to discomfort and leakage, as it is difficult to determine when the absorbent article is too large for the wearer, especially in young children or elderly individuals who may not notice sagging or drooping.

Innovation Solution

Incorporating target strips and visual sizing indicators on the absorbent article to help determine if it is too large, with the indicators positioned between the target strips and the fasteners, allowing caregivers to assess if the article should be downsized by checking if the fasteners overlap the indicators during securing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a larger sized absorbent article is chosen under the mistaken belief that it will have greater absorbency, then absorbency is improved, but the article may slip, slide, sag, or droop causing discomfort and leakage

Engineering Contradiction:
ImproveabsorbencyVSAvoidfit stability
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The patent applies preliminary action by providing visual sizing indicators and target strips before the wearing event occurs. These indicators allow the caregiver to pre-assess the proper size selection based on the wearer's body measurements and characteristics, preventing the common mistake of choosing oversized articles for perceived greater absorbency. The indicators are positioned to show the optimal fastening location that ensures proper fit while maintaining adequate absorbency.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback through visual sizing indicators and target strips that provide immediate visual confirmation of proper sizing. The indicators show whether the selected size is appropriate, too large, or too small, allowing real-time adjustment of the sizing decision. This feedback mechanism corrects the misconception that larger size always equals greater absorbency by showing the optimal size for each wearer.

Inventive Principle:
Principle #23Feedback

2Device complexity

If size determination is based on a single criteria such as weight or hip circumference, then sizing is simplified, but other relevant factors such as age, height, thigh circumference, and rise are not taken into account

Engineering Contradiction:
Improvesizing complexityVSAvoidsize determination accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent applies segmentation by dividing the sizing determination process into multiple independent assessment criteria. Instead of relying on a single measurement, the system evaluates multiple factors including weight, hip circumference, age, height, thigh circumference, and rise separately. Each criterion has its own visual indicator or reference point, allowing the caregiver to assess each dimension independently and combine them for a comprehensive sizing decision.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements universality by creating a multi-functional sizing system that serves multiple purposes simultaneously. The visual indicators and target strips not only indicate size selection but also guide proper positioning, show fastening locations, and provide fit verification. This multi-functional approach consolidates multiple sizing criteria into a single integrated system that maintains simplicity while improving accuracy.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If an absorbent article is too large for the wearer, then it may be wrapped around the waist with adhesive closure tabs adhered anywhere, but it is difficult to determine when the article is too large, especially in young children or elderly persons who may not notice sagging or drooping

Engineering Contradiction:
Improvefastening flexibilityVSAvoidill-fit detection
Core Design Contradiction:
Ease of operationVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies color changes through visual sizing indicators that use distinct color coding or visual patterns to indicate proper versus improper sizing. The target strips and indicators are designed with contrasting colors or visual patterns that are easily distinguishable, allowing even young children or elderly persons to detect ill-fit conditions. When the article is too large, the visual indicators clearly show misalignment or incorrect positioning, making sagging or drooping detectable through color or pattern mismatches.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The patent introduces an intermediary visual indicator system that mediates between the wearer's inability to self-assess and the caregiver's need for accurate fit determination. The visual sizing indicators and target strips serve as an intermediary reference that translates complex fit assessment into simple visual cues. This intermediary system allows caregivers to easily detect ill-fit conditions even when the wearer cannot communicate or notice the problems themselves.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Loss of energy

If larger-sized absorbent articles are used, then more absorbent materials are required making them more costly to manufacture, but downsizing may cause the adhesive closure tabs to not reach the target strips

Engineering Contradiction:
Improvemanufacturing costVSAvoidclosure reliability
Core Design Contradiction:
Loss of energyVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-positioning target strips and visual sizing indicators at optimal locations during manufacturing. These indicators are placed in advance to guide the caregiver in selecting the correct size and proper fastening location. By pre-establishing these reference points, the system ensures that when the correct size is chosen, the adhesive closure tabs will naturally align with the target strips, eliminating the risk of tabs not reaching the targets while preventing oversized selection that would waste materials and increase cost.

Inventive Principle:
Principle #10Preliminary action

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 solution reduces leakage and provides a more comfortable fit by indicating when the article is too large, promoting better security and cost-effectiveness by ensuring a snug fit and preventing the use of oversized, more expensive absorbent articles.

Implementation Method 1

adhesive closure tabs, typically located on a back portion of the absorbent article, will not reach the target strips located on the front portion of the absorbent article, thus making it impossible to secure the absorbent article to the wearer

Methodology Applied
Scientific EffectAdhesive: Adhesive

Data Source

PatentUS11813151B2Absorbent article
Publication Date: 2023.11.14 MEDLINE INDUSTRIES
  • US11813151B2 patent drawing
  • US11813151B2 patent drawing
  • US11813151B2 patent drawing

AI summary

An absorbent article is disclosed. The article includes a first portion having at least two target strips located on opposite ends of the first portion, at least one visual sizing indicator positioned on the first portion of the article between the at least two target strips, the visual sizing indicator including indicia for indicating that the article is too large for a wearer, a middle portion contoured inwards such that an hourglass shape is formed, and a second portion having at least two fasteners located on opposite edges of the second portion. The absorbent article is formed of several layers including a moisture-impervious outer layer, an inner layer substantially co-extensive with the outer layer, and a filler interposed between the inner layer and the outer layer.