Adjustable Absorbent Article Length via Fold-and-Fasten Segmentation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current absorbent hygiene products, such as disposable incontinence diapers, often sag, gap, or slip due to wearer movements, leading to premature leakage and poor fit, especially in the waist and leg regions, and there is a need for a cost-effective 'one-size-fits-all' solution that accommodates multiple subject sizes without requiring multiple product designs.

Innovation Solution

An absorbent article with a chassis, liquid-absorbent member, and oppositely disposed elastic rear panels in the back waist region, featuring a length adjustment region in the front waist area that can be folded and fastened to adjust the overall length and width, allowing for customizable fit across different user sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If elastic features are added to absorbent articles to improve fit, then the fit and stretch capability are improved, but the manufacturing complexity and cost increase

Engineering Contradiction:
ImprovefitVSAvoidmanufacturing complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The absorbent article is divided into multiple size configurations by creating cut lines that segment the article into adjustable sections. Users can fold and tape the article along these cut lines to create different size configurations, eliminating the need for complex elastic features while achieving customizable fit.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent uses simple, inexpensive materials such as tapes and cut lines instead of expensive elastic components. The disposable nature of the article allows for simple structural modifications without requiring durable elastic materials that would increase cost and manufacturing complexity.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Manufacturing precision

If multiple product designs are created to accommodate different subject sizes, then the fit for each size is optimized, but the production and logistics complexity increase

Engineering Contradiction:
Improvefit for each sizeVSAvoidproduction efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

A single absorbent article design serves multiple size requirements through adjustable configurations. The article includes cut lines and fastening features that allow it to be adjusted to fit different body sizes, making one product design universal for multiple size needs and eliminating the requirement for separate size-specific products.

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

Solution Approach 2:

The absorbent article transitions from a fixed size design to a dynamic, adjustable design. Users can modify the article's dimensions by folding and taping along predetermined cut lines, allowing the same article to adapt to different size requirements rather than requiring multiple static size variants.

Inventive Principle:
Principle #15Dynamics

3Ease of manufacture

If the absorbent article is made with fixed dimensions, then the manufacturing process is simple, but the article sags and slips during wear

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidfit stability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The article incorporates cut lines that segment the structure into adjustable sections. These segments can be folded and secured with tapes to create a customized fit that prevents sagging and slipping, while the base manufacturing process remains simple and unchanged.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The article allows users to change physical parameters such as length and width by folding along cut lines and securing with tapes. This enables the same manufactured article to be adjusted to different dimensional parameters to achieve stable fit without requiring multiple manufacturing processes.

Inventive Principle:
Principle #35Parameter changes

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 solution provides a snug and adjustable fit, reducing leakage and accommodating various sizes with a single product design, simplifying production and logistics while maintaining effectiveness and comfort.

Implementation Method 1

at least two oppositely disposed elastic rear panels joined to said chassis in said back waist region... providing an extensible waist feature on an absorbent article that exhibits an 'elastic-like' behavior in the direction of applied force or elongation

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a liquid-absorbent member extending across the crotch region towards the front and back waist regions... configured to collect and contain body fluids and exudates

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentEP3434238B1Absorbent article for multiple size comfortable fit
Publication Date: 2021.03.10 ONTEX BV
  • EP3434238B1 patent drawingFigure 1
  • EP3434238B1 patent drawingFigure 2A~2B

AI summary

An absorbent article, having a longitudinal axis and a transverse axis and comprising: a chassis including a skin-facing side, a garment-facing side opposite to said skin-facing side, a front waist region proximal to a chassis front end, a back waist region proximal to a chassis back end and a crotch region extending between said front and back waist regions; a liquid-absorbent member extending across the crotch region towards the front and back waist regions, and having a front end and a back end; at least two oppositely disposed elastic rear panels joined to said chassis in said back waist region and extending laterally outward therefrom in a direction parallel to said transverse axis; and one or more fasteners positioned on each of said elastic rear panels proximal to an end thereof being distal from said chassis; wherein the front waist region of the chassis comprises a length adjustment region that is adapted such to vary the overall length of the absorbent article and wherein the distance between said front end and said chassis front end is greater than the distance between said back end and said chassis back end.