Two-Fold Absorbent Article Packages for Uniform Compression
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Solution Overview
Problem
Absorbent articles like diapers have non-uniform cross-sections, leading to uneven compression forces in packages, resulting in instability during transport and storage, increased packaging material use, and environmental impact.
Innovation Solution
Packages of absorbent articles are designed with a combination of two folds, each perpendicular to the central longitudinal axis, ensuring a uniform pressure response and increased stability, achieved by folding high and low caliper areas uniformly across the package.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If absorbent articles are compressed into packages with high density, then transport efficiency and space exploitation are improved, but package stability and uniform pressure response deteriorate due to non-uniform cross-section
Solution Approach 1:
The absorbent article is divided into multiple zones with different caliper values (first zone with first caliper, second zone with second caliper, third zone with third caliper). This segmentation allows each zone to be compressed differently, creating a more uniform pressure distribution across the package while maintaining high overall density, thus resolving the contradiction between transport efficiency and package stability
Solution Approach 2:
Different portions of the absorbent article are given different local properties through varying caliper values in different zones. The first zone has a first caliper, the second zone has a second caliper, and the third zone has a third caliper, allowing localized compression characteristics that collectively achieve uniform pressure response and stable packaging while maximizing space utilization
2Loss of substance
If absorbent articles are compressed to increase density within packages, then material savings are achieved, but uniform stability and pressure response are compromised
Solution Approach 1:
The absorbent article is segmented into zones with different caliper values, enabling differentiated compression strategies. This allows the package to achieve high density and reduce packaging material while maintaining uniform pressure response through the coordinated compression of different zones, thus resolving the contradiction between material savings and manufacturing precision
3Volume of stationary object
If packages are stacked to optimize storage exploitation, then space efficiency is improved, but safety and stability during transport deteriorate due to uneven compression
Solution Approach 1:
By segmenting the absorbent article into zones with different caliper values, the package achieves more uniform compression characteristics. This uniformity ensures that when packages are stacked for optimized storage exploitation, the force distribution remains even across all packages, maintaining transport safety and reliability while maximizing space efficiency
Data Source
AI summary
A package comprising a plurality of absorbent articles such as diapers comprising a flexible package material. The articles are folded along a first fold line, which is substantially perpendicular to a central longitudinal axis and a second fold line extending transversely across a front and back waist regions 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 and a front waist edge of the absorbent core in the front waist region and/or lies between the first fold line and a back waist edge of the absorbent core in the back waist region.