Disposable Wearing Article Waist Panel Stiffness

Solution Overview

Problem

Disposable wearing articles with low stiffness in sections extending beyond the liquid absorbent structure tend to fold when put on, creating gaps that can lead to leakage of body exudates, especially when the wearer lies down, making it difficult to visually recognize the waist region and resulting in unnoticed leakage.

Innovation Solution

The wearing article design includes a liquid absorbent structure with end portions extending to the waist opening edge, ensuring the waist panel does not fold in these areas, with specific folding stiffness and elastic arrangements to prevent leakage and facilitate easy putting on.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the liquid absorbent structure is shortened to facilitate putting on, then ease of operation is improved, but the waist panel becomes prone to folding and leakage occurs

Engineering Contradiction:

Improveease of putting onVSAvoidprevention of leakage

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies local quality by differentiating the stiffness characteristics of different regions of the waist panel. The section extending beyond the liquid absorbent structure is designed with higher stiffness than conventional designs, while other regions maintain appropriate flexibility. This localized stiffness enhancement prevents folding at critical areas without compromising overall ease of putting on.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the stiffness parameter of the waist panel in specific regions by adjusting the construction and material properties of the sheet members. The stiffness is increased in the section extending beyond the liquid absorbent structure to prevent folding, while maintaining lower stiffness in other areas to facilitate easy putting on and comfortable wear.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the waist panel stiffness is increased to prevent folding, then reliability is improved, but ease of operation deteriorates

Engineering Contradiction:

Improveprevention of foldingVSAvoidease of putting on

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent applies local quality by differentiating the stiffness characteristics of different regions of the waist panel. The section extending beyond the liquid absorbent structure is designed with higher stiffness than conventional designs, while other regions maintain appropriate flexibility. This localized stiffness enhancement prevents folding at critical areas without compromising overall ease of putting on.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the stiffness parameter of the waist panel in specific regions by adjusting the construction and material properties of the sheet members. The stiffness is increased in the section extending beyond the liquid absorbent structure to prevent folding, while maintaining lower stiffness in other areas to facilitate easy putting on and comfortable wear.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10610422B2Disposable wearing article

Publication Date: 2020.04.07 UNI CHARM CORP

AI summary

Provided is a wearing article that can prevent the folding of a waist panel. In a disposable wearing article that includes a waist panel for forming first and second waist regions, a liquid absorbent structure that extends from a crotch region to the first and rear waist regions and includes a liquid absorbent core, a waist opening, and a pair of leg openings, and at least in the first waist region out of the first and second waist regions, the liquid absorbent structure includes an end portion that extends from the end edge of the liquid absorbent core to the side of the waist opening, and the outer end edge of the end portion extends to the edge of the waist opening.