Disposable Absorbent Pants With 3D Containment System
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Solution Overview
Problem
Existing disposable diapers fail to adequately contain excess liquid and waste, leading to leakage and blowouts, and lack effective air circulation, causing skin irritation and odor due to constant moisture contact.
Innovation Solution
A disposable absorbent pant with a three-dimensional containment system featuring pleated, channeled, or bubbled sections on the wearer-facing surface, which physically captures excess liquid and waste, reduces moisture contact with the skin, and enhances air circulation by creating spaces between the inner layer and the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flat inner layer is used in existing diapers, then the structure is simple and easy to manufacture, but liquid and waste are not adequately contained leading to leakage and blowouts
Solution Approach 1:
The patent transforms the flat two-dimensional inner layer into a three-dimensional structure with channels, ridges, and valleys. This dimensional change creates physical containment features that capture and direct liquid and waste, preventing leakage and blowouts while maintaining manufacturing feasibility through molding techniques.
Solution Approach 2:
The inner layer is segmented into multiple functional zones including channels, ridges, valleys, and containment pockets. This segmentation divides the liquid handling function into discrete structural elements that work together to contain, direct, and manage fluid flow, improving reliability without excessive complexity.
2Object-affected harmful factors
If the inner layer lays flat against the wearer's skin, then contact is maximized for absorption, but air circulation is blocked causing moisture buildup and skin irritation
Solution Approach 1:
By raising the inner layer into a three-dimensional structure with channels and valleys, the patent creates vertical spacing between the inner layer and the wearer's skin. This vertical dimension allows air to circulate beneath the diaper, reducing moisture buildup and skin irritation while maintaining effective liquid contact through the channel structures.
Solution Approach 2:
The inner layer structure varies locally with channels and valleys positioned in specific regions to optimize both liquid containment and air circulation. Different areas of the inner layer have different heights and configurations tailored to local requirements for fluid management and breathability.
3Quantity of substance
If absorbent material volume is increased to handle large liquid volumes, then absorption capacity improves, but the diaper becomes bulkier and may not fit snugly causing leakage
Solution Approach 1:
The patent concentrates absorbent material strategically within three-dimensional containment structures and channels where it is most needed for liquid management. This localized placement of absorbent material provides effective absorption capacity while minimizing overall diaper bulk and maintaining a snug fit to prevent leakage.
Solution Approach 2:
The patent utilizes vertical space through three-dimensional channel and valley structures to accommodate absorbent material and liquid without increasing the horizontal footprint of the diaper. This vertical organization allows high absorption capacity within a compact, form-fitting design.
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 three-dimensional structure effectively reduces the incidence of leakage and blowouts, provides improved handling and containment of liquid and waste, and minimizes moisture contact with the skin, enhancing comfort and air circulation.
Implementation Method 1
the inner layer is generally flat on the inside, with no structure capable of physically capturing and containing excess liquid and/or waste that is not absorbed by the diaper
Implementation Method 2
an absorbent layer interposed between the inner layer and the outer layer
Implementation Method 3
Traditionally, disposable diapers comprise a liquid permeable inner layer that faces the wearer's body, a liquid impermeable outer layer that faces the wearer's clothing, and an absorbent layer interposed between the inner layer and the outer layer
Data Source
AI summary
An absorbent pant is provided with a containment system defined by a wearing-facing surface of the absorbent pant. The containment system comprises at least one of the following: a pleated section comprising a plurality of pleats; a channeled section comprising a plurality of alternating ridges and channels; and/or a bubbled section comprising a plurality of hemispherical-shaped bubbles aligned in a plurality of rows.