Asymmetric Cutting of Absorbent Composites for Cost Reduction

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Solution Overview

Problem

There is a need for a simplified absorbent article and manufacturing method to meet the basic needs of lower income consumers, as existing advanced absorbent articles have increased capital investment and manufacturing costs.

Innovation Solution

A method involving a rectangular liquid-impermeable layer and an absorbent layer joined in facing relation, severed at non-parallel cuts to create discrete absorbent articles, allowing for variations in configuration and absorbent capacity, and potentially including cut-outs for leg openings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If advanced absorbent articles with sophisticated features are produced, then performance and aesthetics are improved, but capital investment and manufacturing costs increase

Engineering Contradiction:

Improveabsorbent performanceVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent divides a single large absorbent composite into multiple discrete absorbent articles through cutting. This segmentation allows one large composite to serve multiple functions, reducing the need for producing multiple separate complex articles and thereby lowering manufacturing costs while maintaining performance requirements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The absorbent composite is designed as a universal base structure that can be cut into different configurations to serve multiple purposes. By creating articles with different absorbent capacities from a single composite, the system achieves multi-functionality without requiring separate manufacturing processes for each article type, thus reducing capital investment.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If multiple discrete absorbent articles are produced from a single composite, then manufacturing efficiency is improved, but cutting complexity increases

Engineering Contradiction:

Improvemanufacturing efficiencyVSAvoidcutting process complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The absorbent composite is prepared in advance with pre-defined cut lines and configurations before being cut into discrete articles. This preliminary preparation simplifies the cutting process by providing clear guidance for where cuts should be made, reducing cutting complexity while maintaining high manufacturing efficiency.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent employs asymmetric cutting patterns where cut lines are positioned at specific angles and locations to create articles of different sizes and shapes from a single composite. This asymmetric approach optimizes the use of the composite material and simplifies the cutting process by using consistent cutting angles rather than requiring multiple different cut configurations.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS8696855B2Simplified absorbent article construction and method of making

Publication Date: 2014.04.15 KIMBERLY CLARK WORLDWIDE INC

AI summary

A method includes moving an absorbent composite in a machine direction, severing the composite at a first cut oriented in a direction that is non-parallel and non-perpendicular with the machine direction, severing the composite at a second cut oriented in a direction that is non-parallel and non-perpendicular with the machine direction, severing the composite at a third cut oriented in a direction that is perpendicular to the machine direction, and separating the composite along the first cut, the second cut, and the third cut into discrete absorbent articles.