Auxiliary Absorbent Article With Extended Release Sheet

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Solution Overview

Problem

Auxiliary absorbent articles face challenges in being easily attached to desired positions on absorbent articles, such as diapers, due to the need for precise placement to enhance absorption capacity and prevent leakage.

Innovation Solution

The auxiliary absorbent article features a release sheet that extends outward beyond the main body's end edges, allowing for easy peeling and attachment without significant movement, along with a liquid-permeable cover sheet and strategically positioned adhesive parts to enhance absorption and prevent lateral leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the release sheet is covered only up to the end edges of the main body, then the auxiliary absorbent article maintains a compact structure, but it becomes difficult to peel off and attach at the desired position without moving

Engineering Contradiction:
Improveease of attachmentVSAvoidpositioning accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The release sheet is extended beyond the end edges of the main body in advance, creating a handling portion that allows users to easily grasp and peel off the auxiliary absorbent article without moving it. This preliminary extension of the release sheet enables precise positioning during attachment while maintaining ease of operation.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the release sheet extends beyond the main body end edges, then it becomes easy to peel off and attach at the desired position, but the overall structure becomes more complex and material usage increases

Engineering Contradiction:
Improveease of peelingVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The extended release sheet serves multiple functions: it acts as the release surface for the adhesive part, provides a handling portion for easy peeling, and maintains the compact structure during storage. By making the release sheet perform these multiple functions, the structural complexity is minimized while achieving ease of operation.

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

3Area of stationary object

If the cover sheet extends outward in the width direction, then it provides better coverage, but urine diffusion outward in the width direction increases

Engineering Contradiction:
Improvecoverage areaVSAvoidurine diffusion
Core Design Contradiction:
Area of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The cover sheet is folded back at both end parts in the width direction, creating a segmented structure where the main body provides coverage while the folded-back portions contain urine diffusion. This segmentation allows the cover sheet to provide adequate coverage area while preventing harmful urine diffusion outward.

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 configuration enables easy and precise attachment of the auxiliary absorbent article to the desired position on absorbent articles, improving absorption capacity and leakage prevention by allowing for better positioning and handling during use.

Implementation Method 1

an adhesive part provided on an outer facing side of the main body

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 2

a liquid-permeable cover sheet which covers a skin facing side and an outer facing side of the absorber

Methodology Applied
Scientific EffectPermeation: Permeation

Implementation Method 3

a main body comprising an absorber

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentUS12171645B2Auxiliary absorbent article
Publication Date: 2024.12.24 LIVEDO CORP
  • US12171645B2 patent drawing
  • US12171645B2 patent drawing
  • US12171645B2 patent drawing

AI summary

An auxiliary absorbent article is for attachment to a skin facing side of another absorbent article, and has a longitudinal direction and a width direction. The auxiliary absorbent article includes: (i) a main body including an absorber and a liquid-permeable cover sheet which covers an inner facing side of the absorber and an outer facing side of the absorber; (ii) an adhesive part on an outer facing side of the main body; and (iii) a release sheet on an outer facing side of the adhesive part to cover the adhesive part. The release sheet extends outward in the longitudinal direction beyond an end edge of the main body.