Absorbent Insert Positioning Notch for Underwear-Like Garments
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Solution Overview
Problem
Current disposable absorbent garments for bedwetting are not satisfactory as they resemble diapers and do not adequately mimic conventional underwear, leading to user dissatisfaction, particularly in terms of appearance and feel.
Innovation Solution
A discrete absorbent insert with a fluid-permeable first and second sheet and an absorbent core positioned between them, forming a perimeter seal with notches for improved positioning and containment, utilizing at least 40% superabsorbent material and an intake layer for enhanced absorbency, without a fluid-impervious layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If disposable absorbent garments are designed to be more underwear-like with softer materials and gender-specific graphics, then appearance and feel are improved, but the ability to effectively contain urine insults may be compromised
Solution Approach 1:
The absorbent insert is segmented into distinct functional zones: a central absorbent core for urine containment, surrounded by a perimeter seal made of softer material for comfort, with positioning notches for proper orientation. This segmentation allows each zone to optimize its specific function while working together as a unified underwear-like garment.
Solution Approach 2:
Different regions of the absorbent insert have different material properties: the central core uses highly absorbent materials for reliability, the perimeter seal uses softer materials for comfort and underwear-like feel, and positioning notches provide structural guidance. This local differentiation resolves the contradiction between appearance and containment capability.
2Reliability
If the absorbent insert uses a fluid-impervious layer to prevent leakage, then containment reliability is improved, but the underwear-like comfort and breathability deteriorate
Solution Approach 1:
The absorbent insert uses porous absorbent core materials that can absorb and retain urine through capillary action and adsorption, replacing the need for fluid-impervious layers. The porous structure provides both containment reliability and breathability, maintaining underwear-like comfort while preventing leakage.
Solution Approach 2:
The insert combines multiple materials with complementary properties: highly absorbent core materials for containment, softer perimeter materials for comfort, and breathable nonwoven fabrics that provide both comfort and adequate containment without requiring impermeable barriers.
3Quantity of substance
If the absorbent core is made larger to increase absorbent capacity, then urine management capability is improved, but the garment becomes more bulky and less underwear-like
Solution Approach 1:
The absorbent core dimensions are optimized within specific ranges (length 340-450 mm, width 135 mm at ends, less than 90 mm at center) to provide adequate absorbent capacity (at least 600 g) while maintaining a compact, underwear-like profile. The notched design allows the core to conform to the body contour, reducing bulk while preserving capacity.
Solution Approach 2:
The absorbent core uses a contoured, non-uniform width design that is wider at the ends (135 mm) and narrower at the center (less than 90 mm), allowing the material to be distributed efficiently in three-dimensional space. This dimensional variation provides high absorbent capacity while maintaining a sleek, underwear-like external profile.
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 underwear-like product that effectively manages bedwetting by offering improved absorbency and containment while maintaining a discreet and comfortable design.
Implementation Method 1
an absorbent core positioned between the first sheet and the second sheet. The absorbent core defines a core perimeter
Implementation Method 2
an intake layer positioned between the first sheet and the absorbent core and having a basis weight of at least 85 gsm
Implementation Method 3
The absorbent core further includes at least 40% superabsorbent, an intake layer positioned between the first sheet and the absorbent core and having a basis weight of at least 85 gsm, and an absorbent capacity of at least 600 g
Data Source
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AI summary
A discrete absorbent insert includes a first sheet, a second sheet in facing relation with the first sheet, and an absorbent core positioned between the first sheet and the second sheet. The absorbent core defines a core perimeter which includes a first absorbent core positioning notch. The first sheet and the second sheet extend beyond the core perimeter and are joined together to form a perimeter seal. The perimeter seal defines an absorbent insert perimeter which includes a first absorbent insert positioning notch. The first absorbent core positioning notch has a depth of 30 to 60 mm, the first absorbent insert positioning notch has a depth of 30 to 60 mm, and the first absorbent insert positioning notch is aligned with the first absorbent core positioning notch.