Origami-Folded Diapers for Shape Conformance and Wicking
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Solution Overview
Problem
Diapers often struggle with conforming to the shape of the wearer's anatomy, pooling of urine, and sagging due to loads from fecal matter, leading to discomfort and leakage.
Innovation Solution
Incorporating origami patterns with pre-determined fold lines into diaper designs to improve shape-conformance, distribute fluid loads evenly, and enhance structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional flat diaper design is used, then manufacturing is simple, but shape-conformance to wearer's anatomy is poor
Solution Approach 1:
The diaper is divided into multiple layers with distinct functions (acquisition layer, distribution layer, wicking layer, containment layer) and incorporates multiple origami pattern types in different regions. This segmentation allows each layer to specialize in specific fluid management tasks while collectively achieving superior shape-conformance to the wearer's anatomy.
Solution Approach 2:
The patent transitions from traditional flat 2D diaper design to 3D volumetric structures through origami folding patterns. The kirigami and origami techniques create multi-dimensional accordion folds, radial patterns, and tunnel structures that add vertical and radial dimensions, enabling the diaper to conform to curved anatomical surfaces while maintaining structural integrity.
2Stability of the object's composition
If traditional diaper design is used, then structure is simple, but sagging under load occurs
Solution Approach 1:
The diaper incorporates pre-formed origami folding patterns and rigidifying structures during manufacturing that are activated when fluid is absorbed. These pre-engineered geometric structures (accordion folds, radial patterns, tunnels) are designed in advance to provide structural support and distribute loads, preventing sagging before it occurs rather than reacting to it.
Solution Approach 2:
The diaper combines multiple materials with different mechanical properties: hydrophilic acquisition layer, hydrophobic distribution layer, wicking layers with varying orientations, and containment layers. This composite structure creates a multi-functional system where each material contributes specific properties (absorption, distribution, structural support, containment) that collectively resist sagging under load.
3Quantity of substance
If traditional diaper design is used, then fluid distribution is poor, but wicking performance is limited
Solution Approach 1:
The fluid management system is segmented into four distinct layers: acquisition layer for initial absorption, distribution layer for radial spreading, wicking layer for vertical transport, and containment layer for final storage. This segmentation creates specialized zones that handle different aspects of fluid management, enabling both comprehensive fluid distribution and high-speed wicking performance.
Solution Approach 2:
The patent employs multi-directional wicking pathways created through origami folding that transport fluid simultaneously in radial and vertical dimensions. The accordion folds and radial patterns create three-dimensional capillary networks that move fluid away from the wearer's skin in multiple directions and planes, dramatically increasing wicking speed and distribution efficiency compared to traditional linear pathways.
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
Origami patterns reduce sagging, increase comfort, and improve wicking performance by distributing fluid more evenly throughout the diaper, thereby minimizing localized swelling and preventing leakage.
Implementation Method 1
increasing wicking of urine up the diaper and away from a bottom of the diaper
Data Source
AI summary
A diaper is provided which includes at least one origami pattern. The at least one origami pattern includes a pattern of pre-determined fold lines. A method of manufacturing a diaper is also provided. In one step, at least one origami pattern is selected, comprising a pattern of fold-lines, to meet at least one of the following three parameters for the diaper: (1) sag; (2) shape-conformance; or (3) wicking. In another step, the diaper is manufactured to include the selected at least one origami pattern.