Elastic Stress Segmentation in Wearing Article Absorber Contact
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Solution Overview
Problem
Wearing articles for incontinence face challenges with urine leakage due to slow urine flow and large urine discharge, where existing absorbers may fail to maintain high contact with the excretion region or absorb urine quickly enough.
Innovation Solution
The wearing article incorporates a chassis with a crotch region featuring a first elastic member that overlaps the absorber and extends along the longitudinal direction, and a second elastic member that forms part of the elastic stress line with a smaller elastic stress, creating a urine collector for temporary storage to ensure proper absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the absorber main body is made to contact the excretion region tightly to prevent leakage in slow urine flow cases, then the contact pressure increases, but the absorber cannot expand sufficiently to handle large urine discharge volumes
Solution Approach 1:
The elastic member is divided into a first elastic member (extending in longitudinal direction) and a second elastic member (extending in widthwise direction), creating segmented elastic stress distribution that allows different regions to serve different functions
Solution Approach 2:
The patent creates local quality differences by having the first elastic member provide high contact pressure in the longitudinal direction for leakage prevention, while the second elastic member provides lower contact pressure in the widthwise direction to allow absorber expansion for large volume urine discharge
2Strength
If the elastic stress is increased to maintain absorber contact with the skin, then the fitting tightness improves, but the absorber compression reduces its ability to absorb urine instantly
Solution Approach 1:
The elastic stress is segmented into different directions and magnitudes through two separate elastic members, allowing the longitudinal direction to have high stress for contact while the widthwise direction has lower stress for absorption capacity
Solution Approach 2:
The patent changes the elastic stress parameter by introducing directional differences - the first elastic member creates high stress in the longitudinal direction while the second elastic member creates lower stress in the widthwise direction, optimizing both contact and absorption
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
This configuration enhances contact between the excretion region and the absorber, preventing leakage in both slow and high urine flow scenarios by providing a urine collector with reduced elastic stress, allowing time for proper absorption.
Implementation Method 1
a first elastic member that is arranged such that it overlaps the absorber in the crotch region and extends along the longitudinal direction of the wearing article at an approximate center of the widthwise direction of the wearing article, and a second elastic member that curves within the crotch region from both ends of the waistline region in the widthwise direction of the wearing article and configures at least a part of the elastic stress line that crosses the absorber along the widthwise direction of the wearing article
Data Source
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AI summary
A wearing article 1 includes a chassis 100 and an absorber main body 200. The wearing article 1 has a central elastic member 41C overlapping a non-skin surface of an absorber in the crotch region and extending along a longitudinal direction L at an approximately center of a widthwise direction L of the wearing article, and a back leg elastic member 24R that curves within the crotch region 120 from the end of a back waistline region 110R in the widthwise direction W and configures at least a part of an elastic stress line 310 that crosses the absorber along the widthwise direction W. In the elastic stress line 310, the elastic stress of the portion crossing the absorber is smaller than the elastic stress of the central elastic member 41C.