Diaper Pad Segmented Folding to Preserve Convex Portions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pad designs for tape-type disposable diapers fail to maintain the shape of convex portions on the front-face sheet when folded, leading to potential reductions in liquid diffusibility due to overlapping portions.
Innovation Solution
A pad design featuring a liquid-pervious front-face sheet and a liquid-impervious back-face sheet with an absorber in between, where convex portions are formed to protrude, and specific folding lines are used to maintain their shape by creating spaces between the inner surfaces of the narrowing portion and the outer side portions, preventing pressing of the convex portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the absorber is folded inward with conventional folding lines to reduce the pad size, then the pad becomes more compact, but the convex portions on the front-face sheet are pressed and deformed, reducing liquid diffusibility
Solution Approach 1:
The absorber is divided into multiple sections with different folding lines: first folding lines divide the absorber into front and back portions, while second folding lines further divide these portions into left and right sections. This segmentation allows different regions to fold independently, preventing deformation of the convex portions while achieving compact size.
Solution Approach 2:
The folding lines are strategically positioned at specific locations: the first folding lines are located at the front and back ends of the absorber, while the second folding lines are positioned at the left and right ends. This local positioning ensures that the convex portions in the central region remain uncompressed during folding, maintaining their liquid diffusion function.
2Area of stationary object
If the left and right side portions of the absorber are folded inward to reduce width, then the pad becomes narrower, but the convex portions are pressed by the overlapping portions, maintaining poor liquid flow
Solution Approach 1:
The absorber width is reduced through a two-stage folding process: first folding lines create front and back portions, then second folding lines divide these into left and right sections. This segmented approach allows the side portions to fold inward without the convex portions being pressed, as the folding occurs in separate stages at different locations.
Solution Approach 2:
The first folding lines are established before the second folding lines. This preliminary action of folding the absorber into front and back portions first creates a structural foundation that allows the subsequent second folding to occur without pressing the convex portions, as the folding sequence is carefully controlled.
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 design effectively maintains the shape of convex portions, enhancing liquid diffusibility by preventing them from being pressed and ensuring efficient urine absorption and distribution.
Implementation Method 1
an absorber disposed between the front-face sheet and the back-face sheet
Implementation Method 2
improve the diffusion of urine and the like urinated on an inner surface
Implementation Method 3
a liquid-pervious front-face sheet, a liquid-impervious back-face sheet
Data Source
Figure 1
Figure 2
Figure 3
AI summary
To provide a pad that folds in three in the front-back direction maintaining the shapes of a large number of convex portions protruding on a front-face sheet that prevents the deterioration of liquid diffusibility. In a planar view, a left front side portion of a front side portion is extended to the left side with respect to a left side narrowing edge of the narrowest portion of a narrowing portion, and a right front side portion of the front side portion is extended to the right side with respect to a right narrowing edge of the narrowest portion of the narrowing portion. In the planar view, a left back side portion of a back side portion is extended to the left side with respect to the left narrowing edge of the narrowest portion of the narrowing portion, and a right back side portion of the back side portion is extended to the right side with respect to the right narrowing edge of the narrowest portion of the narrowing portion. The left front side portion and the left back side portion are folded inward with a first left side folding line which is extending in the front-back direction as the center for the folding and which is provided close to the left side with respect to the left side narrowing edge, and the right front side portion and the right back side portion are folded inward with a first right side holding line which is extending in the front-back direction and which is provided close to the right side with respect to the left side narrowing edge.