Curved Elasticized Laminates for Absorbent Article Leakage Prevention

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Solution Overview

Problem

Absorbent articles face challenges in preventing leakage of bodily exudates, particularly semi-solid fecal material, which can lead to skin irritation and contamination, despite existing containment systems like elasticized flaps and leg cuffs, as these failures result in additional work and stress for caregivers.

Innovation Solution

The introduction of curved elasticized webs in absorbent articles, which form elasticized leg cuffs and containment flaps, providing a better fit and strategic coverage to reduce skin exposure and leakage by aligning with the body's anatomy and dynamically adjusting to contain exudates effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional elasticized containment flaps and leg cuffs are used, then some leakage prevention is achieved, but leakage of semi-solid fecal material still occurs due to inadequate gasketing and containment

Engineering Contradiction:

Improveleakage preventionVSAvoidexudate leakage and skin contamination

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies curvature to the elasticized laminates, containing flaps, and leg cuffs to better conform to the wearer's body contours. This curved geometry improves gasketing effectiveness and containment reliability by matching the natural curvature of the body, preventing leakage of semi-solid fecal material that straight edges cannot contain

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent uses composite elasticized laminates combining laminate material with elastomeric members to create a multi-functional structure. This composite construction provides both structural integrity and elastic gasketing action, enhancing containment reliability while preventing exudate leakage through the combination of rigid and flexible material properties

Inventive Principle:

Principle #40Composite materials

2Reliability

If containment flaps and leg cuffs are added to prevent leakage, then leakage reduction is achieved, but the structure becomes more complex

Engineering Contradiction:

Improvecontainment effectivenessVSAvoidcontainment system structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the containment flap and leg cuff functions into an integrated elasticized laminate structure. This consolidation reduces structural complexity by combining multiple containment elements into a unified component that performs both functions, while maintaining high containment effectiveness through the integrated design

Inventive Principle:

Principle #5Merging (Combining)

3Ease of manufacture

If straight elasticized laminates are used, then manufacturing is simpler, but gasketing around the body is less effective

Engineering Contradiction:

Improvelaminate fabricationVSAvoidgasketing effectiveness

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent implements curved elasticized laminates that follow the body's natural contours, significantly improving gasketing effectiveness. The curved geometry creates better contact with the wearer's body surface, enhancing containment reliability while the curvature is incorporated into the manufacturing process through specialized forming techniques

Inventive Principle:

Principle #14Spheroidality (Curvature)

4Reliability

If traditional leg cuffs and containment flaps are used, then basic containment is provided, but skin exposure to exudates remains high

Engineering Contradiction:

Improvecontainment functionVSAvoidskin exposure to exudates

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The curved design of the elasticized laminates and containment flaps creates overlapping coverage that better follows body contours, reducing exposed skin areas. The curvature allows the containment elements to wrap around body protrusions more effectively, minimizing skin exposure to exudates while maintaining containment function

Inventive Principle:

Principle #14Spheroidality (Curvature)

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 curved design enhances gasketing around the body, reduces skin exposure to exudates, and minimizes leakage incidents, thereby decreasing skin irritation and the need for frequent changes, thus improving the overall performance and comfort of absorbent articles.

Implementation Method 1

an elastomeric member disposed between the laminate material top layer and the laminate material bottom layer

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS20220062068A1Absorbent articles with curved elasticized laminates

Publication Date: 2022.03.03 KIMBERLY CLARK WORLDWIDE INC

AI summary

Absorbent articles having curved elasticized laminates and apparatuses and methods for forming such articles are disclosed. In one embodiment, an absorbent article having a front waist region, a crotch region, and a rear waist region may comprise a chassis comprising bodyside liner, an outer cover, an absorbent body. The article may further comprise a pair of elasticized laminates attached to the chassis to form elasticized leg cuffs. Each of the first pair of elasticized laminates may comprise a laminate material forming a fold and an elastomeric member disposed between the laminate material. Each of the first pair of elasticized laminates may be attached to the chassis such that the fold comprises an outermost longitudinal edge of the article throughout the crotch region, and the fold and the elastomeric member of each of the elasticized laminates may extend in a curving manner throughout the crotch region.