Performance Zones in Absorbent Substrates

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Solution Overview

Problem

Three-dimensional substrates used in absorbent articles face compression and distortion issues during winding, unwinding, and packaging, leading to reduced three-dimensionality, and lack customization options for consumers.

Innovation Solution

The method and tooling for producing three-dimensional substrates on an absorbent article manufacturing line, which includes creating compressed regions or densified areas in the substrates to resist compression, and forming performance zones with three-dimensional elements, apertures, and compressed regions to enhance features like fluid wicking and softness, while allowing for customized designs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If three-dimensional substrates are tightly wound and shipped to a different location, then manufacturing efficiency is improved, but the three-dimensionality of the substrates is reduced due to compression and tensioning

Engineering Contradiction:

Improvemanufacturing efficiencyVSAvoidthree-dimensionality

Core Design Contradiction:

ProductivityVSShape

Solution Approach 1:

The substrate is prepared with pre-compressed regions and densified areas before the winding and shipping process. These pre-formed structural features provide internal support that maintains three-dimensionality during subsequent compression and tensioning operations, allowing the substrate to withstand the winding process without losing its three-dimensional characteristics

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Different regions of the substrate are given different structural properties - compressed regions and densified areas are created in specific locations to provide localized support and maintain three-dimensionality where needed, while other regions can be more flexible. This allows the substrate to maintain its shape during winding while still enabling efficient manufacturing and shipping

Inventive Principle:

Principle #3Local quality

2Productivity

If three-dimensional substrates are unwound and fed into absorbent article manufacturing lines, then production continuity is improved, but the three-dimensionality is further reduced due to compression and tensioning

Engineering Contradiction:

Improveproduction continuityVSAvoidthree-dimensionality

Core Design Contradiction:

ProductivityVSShape

Solution Approach 1:

The substrate is prepared with pre-compressed regions and densified areas before the unwinding process. These pre-formed structural features provide internal support that maintains three-dimensionality during the unwinding and feeding operations, allowing the substrate to withstand the tensioning forces without losing its three-dimensional characteristics

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Different regions of the substrate have different structural properties - compressed regions and densified areas provide localized support during the unwinding process, allowing the substrate to maintain its shape while being fed into the manufacturing line continuously

Inventive Principle:

Principle #3Local quality

3Productivity

If compact packaging is used for absorbent articles, then shipping efficiency is improved, but three-dimensionality is reduced further due to compression

Engineering Contradiction:

Improveshipping efficiencyVSAvoidthree-dimensionality

Core Design Contradiction:

ProductivityVSShape

Solution Approach 1:

Compressed regions and densified areas are created in specific locations within the substrate to provide localized support that maintains three-dimensionality during compact packaging. These densified regions act as structural reinforcement that allows the substrate to withstand compression forces while maintaining its essential three-dimensional features

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The substrate is prepared with pre-compressed regions and densified areas before packaging. These pre-formed structural features provide internal support that maintains three-dimensionality during subsequent compression packaging, allowing the substrate to withstand the compression forces without losing its three-dimensional characteristics

Inventive Principle:

Principle #10Preliminary action

4Ease of manufacture

If uniform three-dimensional patterns are used throughout substrates, then manufacturing simplicity is improved, but consumer customization options are limited

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidcustomization options

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

Different regions of the substrate are given different performance characteristics through localized compressed regions, densified areas, and varied three-dimensional element distributions. This allows creation of performance zones with specific functions (such as enhanced absorbency or softness in particular areas) while maintaining a relatively simple overall manufacturing process that uses the same basic substrate material and formation techniques throughout

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP3579803B1Methods and tooling for forming performance zones in substrates

Publication Date: 2020.11.11 PROCTER & GAMBLE CO

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AI summary

Methods and tooling for forming performance zones in substrates are provided. The methods and tooling for forming performance zones in substrates may be for use on an absorbent article manufacturing line.