Pants Diaper Elastic Segmentation for Male Comfort and Leakage Control
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Solution Overview
Problem
Conventional pants-type disposable diapers cause discomfort for male wearers due to tightness around the genitalia and are prone to lateral urine leakage, especially when a large amount of urine is excreted at once.
Innovation Solution
The design features a diaper main body with a front, back, and crotch part, incorporating a first elastic member that forms a pocket for male genitalia and a second elastic member spaced from the first to prevent leakage, allowing for temporary urine storage and absorption by the absorbent core.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional pants-type disposable diaper is used, then the diaper structure is simple, but male wearers feel discomfort or tightness around the genitalia
Solution Approach 1:
The elastic member is divided into a first elastic member and a second elastic member that are disposed at different positions and oriented in different directions. The first elastic member extends in the width direction to form a pocket for receiving genitalia, while the second elastic member extends in the length direction to provide leg opening elasticity. This segmentation allows each elastic member to perform its specific function without interfering with the other, improving wearing comfort for male users.
2Reliability
If a conventional pants-type disposable diaper is used, then the diaper structure is simple, but lateral urine leakage occurs when large amount of urine is excreted
Solution Approach 1:
The first elastic member is disposed in advance to form a pocket structure on the front side of the diaper that can temporarily store urine before it reaches the absorbent core. This preliminary action of creating a storage pocket prevents urine from directly overwhelming the absorbent core during large-volume excretion, allowing time for the absorbent core to gradually absorb the urine and prevent lateral leakage.
3Ease of operation
If the first elastic member is disposed continuously across the crotch part, then a pocket is formed to receive male genitalia, but the elastic member may interfere with urine flow to the absorbent core
Solution Approach 1:
The first elastic member is disposed continuously only in the width direction to form the pocket, while the second elastic member is disposed in the length direction to guide urine flow. This local quality differentiation ensures that the pocket formation function and urine flow guidance function are performed by different elastic members at different locations, avoiding interference between the two functions.
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 enhances the wearing comfort for males and ensures effective urine absorption, reducing lateral leakage even with large urine excretion.
Implementation Method 1
a first elastic member disposed continuously to the diaper main body, and having a first crotch-crossing part which extends across the crotch part and a first leg opening edge part which extends along edges of a front side of the both leg openings
Implementation Method 2
an absorbent core disposed at the crotch part
Data Source
AI summary
A pants-type disposable diaper 1 comprising: a diaper main body 2 having a front part P, a back part Q, and a crotch part R therebetween, and having a waist opening 3 and a pair of leg openings 4; an absorbent core 10 disposed at the crotch part R; a first elastic member 13 disposed continuously, and having a first crotch-crossing part 13A which extends across the crotch part R and a first leg opening edge part 13B which extends along edges 15 of a front side of the both leg openings 4; and a second elastic member 14 disposed so as to be spaced from the first elastic member 13, and having a second crotch-crossing part 14A which extends intermittently across the crotch part R and a second leg opening edge part 14B which extends along edges 15 of a back side of the both leg openings 4.