Disposable Hygiene Article Compression Lines Fit
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Solution Overview
Problem
Existing disposable hygiene articles face challenges in providing an improved fit and leakage security, particularly in conforming to the user's anatomy, especially in the crotch and front regions, while maintaining comfort and absorbency, and require a manufacturing method that minimizes equipment modification.
Innovation Solution
The disposable hygiene article features a symmetrical absorbent core with compression lines that mirror each other about the longitudinal centerline, promoting controlled deformation and fluid distribution, along with a density gradient in the core regions to enhance fit and absorbency, and can be manufactured using existing equipment with minimal modifications by forming compression lines through high-pressure compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the absorbent core is designed with varying density regions to improve fit, then the article conforms better to the body, but the manufacturing complexity increases
Solution Approach 1:
The absorbent core is designed with different density regions - a first region with higher average density and a second region with lower average density. This local differentiation allows the article to conform better to body contours while maintaining manufacturability through regional variation rather than complete redesign
Solution Approach 2:
The patent changes the density parameter of the absorbent core material in different regions. By varying the average density from the first region to the second region, the article achieves improved fit and conformity to body shape without requiring complex manufacturing processes
2Reliability
If compression lines are added to control deformation, then the fit and leakage security improve, but the manufacturing process becomes more complex
Solution Approach 1:
Compression lines are formed in advance during the manufacturing process, before the article is put into service. These pre-formed compression lines guide the deformation of the absorbent core when the article is used, ensuring predictable folding and fit without requiring complex real-time adjustment mechanisms
Solution Approach 2:
The compression lines are created by applying different compression forces to specific regions of the absorbent core during manufacturing. This parameter change (compression force) creates the necessary structural features for controlled deformation during use, improving leakage security through a relatively simple manufacturing modification
3Quantity of substance
If the absorbent core density is varied to improve absorbency distribution, then fluid distribution improves, but the manufacturing precision requirements increase
Solution Approach 1:
Different regions of the absorbent core are assigned different density characteristics. The first region has higher density for better fluid absorption, while the second region has lower density for comfort and flexibility. This local quality differentiation improves overall absorbency distribution without requiring extremely precise manufacturing controls throughout the entire article
Solution Approach 2:
The average density parameter is varied between different regions of the absorbent core. By controlling the density parameter locally rather than uniformly, the patent achieves improved fluid absorption and distribution while maintaining manageable manufacturing precision requirements through regional rather than global specification
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 solution provides a more secure and comfortable fit by controlled folding and fluid distribution, reducing leakage risks while maintaining effective absorbency and allowing for efficient production without significant changes to existing manufacturing processes.
Implementation Method 1
forming the first and second compression lines by means of high pressure compression from the topsheet or backsheet side of the core
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
The present invention relates to a disposable hygiene article (1) comprising first and second compression lines in the forward region of the article. The article has a core with a first area (12) which has its narrowest width (M) in the transverse direction (x) in a front portion (2) or at a location of a transition (5) between the front portion (2) and a crotch portion (3) of the article. The absorbent core (6) in the crotch portion (3) comprises the first and second compression lines, which are separated from each other at their closest point by a minimum distance D1, measured in the transverse direction.