Folded Absorbent Article Packages for Stable Stack Compression
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Solution Overview
Problem
Absorbent articles like diapers have non-uniform cross-sections leading to uneven compression forces, resulting in instability in stacks and increased packaging material use, which compromises transport efficiency, safety, and environmental footprint.
Innovation Solution
Packages of absorbent articles are designed with a specific folding pattern involving two folds perpendicular to the central longitudinal axis, ensuring uniform pressure response and stability, reducing packaging material consumption and enhancing transport efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If absorbent articles are piled into a compressed stack for transport, then transport efficiency and storage exploitation are improved, but the non-uniform cross-section causes uneven compression force distribution leading to package instability
Solution Approach 1:
The absorbent article is divided into multiple folded sections (front waist region, back waist region, crotch region) with fold lines creating discrete segments. This segmentation allows each segment to independently distribute compression forces, preventing uneven stress concentration and improving overall package stability during stacked transport.
Solution Approach 2:
Different regions of the absorbent article are given different local structural qualities through strategic fold placement. The fold lines create regions with varying compression resistance characteristics, allowing the article to distribute compression forces more uniformly across its surface area, thereby improving stability while maintaining high transport efficiency.
2Loss of substance
If absorbent article density within the package is increased, then material savings and environmental footprint reduction are achieved, but package stability and safety during transport may be compromised
Solution Approach 1:
The absorbent article is pre-folded into a compact configuration with specific fold lines before packaging. This preliminary folding action creates a structurally optimized form that maintains stability even at high density, allowing increased article density within packages without compromising transport safety, thereby reducing packaging material consumption and environmental footprint.
3Stability of the object's composition
If packages are deformed during transport, then stackability and display appearance are compromised, but increased stability measures may reduce transport efficiency
Solution Approach 1:
The fold lines are positioned asymmetrically relative to the absorbent article's geometry, creating an optimized folding pattern that enhances structural rigidity and resistance to deformation during transport. This asymmetric folding configuration improves both stackability and display appearance while maintaining transport efficiency through compact packaging.
Data Source
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AI summary
A package (1) comprising a plurality of absorbent articles (10) such as diapers comprising a flexible package material. The articles are folded along a first fold line (400) , which is substantially perpendicular to a central longitudinal axis (50) and a second fold line (500) extending transversely across a front and back waist regions (12, 16) along a second fold line, which is substantially perpendicular to the central longitudinal axis. The package may have a Package Out-of-Stack Compression Deflection Differential at 0.6 psi of at most 3.0 mm according to the Package Compression Test detailed herein. The second fold line may lie between the first fold line (400) and a front waist edge (112) of the absorbent core in the front waist region and/ or lies between the first fold line and a back waist edge (116) of the absorbent core in the back waist region.