Hygienic Article Material Sections Folded Configuration

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Solution Overview

Problem

Existing absorbent incontinence articles face challenges in handling wide material sections during production and user application, particularly in high-speed manufacturing and when applied to individuals requiring care, as the material sections tend to flutter and are difficult to manage.

Innovation Solution

The material sections are folded over each other and releasably attached using methods like cold stamping, thermal welding, or ultrasonic welding, with a gripping area that allows for easy unfolding by a single pull, reducing the number and strength of affixation points to simplify handling and prevent fluttering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If wide material sections are attached to the main body portion, then the coverage and protection area is improved, but the handling during production and application becomes difficult

Engineering Contradiction:
Improvecoverage areaVSAvoidhandling ease
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The material sections are divided into multiple parts that can be separately handled and then assembled. The folding mechanism creates segmented sections that are easier to manage during production and application while maintaining wide coverage when deployed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The material sections are folded into a compact configuration that nests within the main body portion. This nested state reduces the effective size and complexity of wide material sections during handling, while providing full coverage when unfolded and attached.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Area of stationary object

If material sections are kept wide and extended, then the protective coverage is improved, but the material sections tend to flutter and are difficult to manage

Engineering Contradiction:
Improveprotective coverageVSAvoidmaterial stability
Core Design Contradiction:
Area of stationary objectVSStability of the object's composition

Solution Approach 1:

The material sections are pre-folded and pre-attached in a controlled manner before use. This preliminary configuration prevents fluttering and instability during handling, while maintaining the capability to provide wide protective coverage when deployed.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The material sections utilize flexible, thin-film structures that can be folded and attached in a way that reduces fluttering. The flexibility allows the material to conform to the body while maintaining stability in its folded/attached state.

Inventive Principle:
Principle #30Flexible shells and thin films

3Stability of the object's composition

If the number and strength of affixation points are increased, then the attachment stability is improved, but the ease of unfolding and handling is reduced

Engineering Contradiction:
Improveattachment stabilityVSAvoidunfolding ease
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The attachment system uses multiple distributed affixation points rather than few strong points. This segmentation provides sufficient overall stability while keeping individual attachment points weak enough to be easily overcome during unfolding, achieving both stability and ease of operation.

Inventive Principle:
Principle #1Segmentation

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 design enhances the user-friendliness of the incontinence article, particularly for those requiring intensive care, by allowing easy unfolding and attachment, preventing material sections from fluttering during production and application, and ensuring a neat appearance.

Implementation Method 1

The releasable attachment of the folded partial sections of the material sections attached to the main body portion can be achieved, for example, by cold stamping or by stamping using temperature (thermal welding)

Methodology Applied
Scientific EffectThermal welding: Welding

Implementation Method 2

by needling, in particular hot needling, or by ultrasonic welding or laser welding

Methodology Applied
Scientific EffectUltrasonic welding: Ultrasonic Vibration

Implementation Method 3

the material sections folded over each other are releasably attached to each other so that they are kept in their folded configuration in the high-speed manufacturing machine and do not flutter

Methodology Applied
Scientific EffectMechanical constraint: Mechanical Force

Data Source

PatentUS7527618B2Hygienic article for incontinence
Publication Date: 2009.05.05 PAUL HARTMANN AG
  • US7527618B2 patent drawing
  • US7527618B2 patent drawing
  • US7527618B2 patent drawing

AI summary

An absorbent incontinence article has a main body portion consisting of a front region, a back region and an interposed crotch region lying therebetween in a longitudinal direction when finally positioned between the legs of a wearer. The main body portion includes an absorbent core and material sections attached to at least one of the back and front regions which extend in the transverse direction beyond lateral lengthwise edges of the main body portion and connect the front region and the back region. The sections of material are folded over themselves along at least one lengthwise direction extending fold line. Partial sections of the material sections adjoining one another over an area in the folded configuration are releasably attached to one another at affixation points.