Absorber Groove With Side Edge Superabsorbent Resin
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing absorbent products, such as disposable diapers, face issues with reduced absorption speed and capacity due to 'gel blocking' and concave portion design, which impede the diffusion of body fluids and lower overall absorption performance.
Innovation Solution
Incorporating a concave groove-shaped body fluid inflow portion with granular powder superabsorbent resin on the side edge portions to enhance absorption speed and capacity, while preventing gel blocking by ensuring the superabsorbent resin is intensively provided on the side edges and strategically arranged to maintain absorption efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If superabsorbent resin particles are interposed in the bottom portion of the groove, then body fluid can be temporarily stored in the groove, but gel blocking occurs which prevents necessary absorption power and lowers absorption speed
Solution Approach 1:
The patent applies local quality by distributing superabsorbent resin particles specifically in the side wall portions of the groove rather than uniformly in the bottom portion. This localized placement allows the groove to temporarily store body fluid while the side wall resin particles absorb fluid from the surrounding areas, preventing gel blocking in the bottom portion and maintaining high absorption speed.
Solution Approach 2:
The patent segments the absorption function by separating the body fluid storage function (groove structure) from the absorption function (superabsorbent resin particles in side walls). This segmentation allows the groove to serve as a temporary reservoir while the resin particles in the side walls handle the absorption, avoiding the gel blocking problem that occurs when resin is placed in the bottom.
2Quantity of substance
If a concave portion is provided in the absorbent core to store feces, then temporary storage is improved, but the body fluid absorption capacity of the absorbent core is reduced
Solution Approach 1:
The patent applies local quality by placing superabsorbent resin particles specifically in the side wall portions of the groove, which compensates for the reduced absorption capacity caused by the concave portion. This localized resin placement creates additional absorption zones that make up for the volume lost to the concave structure, maintaining overall absorption capacity while enabling temporary storage.
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 effectively increases absorption speed and maintains the absorbed amount at a desired level by diffusing body fluids into the absorber from the side surface, preventing blockage and enhancing overall absorption capacity without compromising skin comfort.
Implementation Method 1
the water-absorbent fiber and the superabsorbent resin particles are interposed between the surface sheet and the back surface sheet in the bottom portion of the groove
Implementation Method 2
since the superabsorbent resin particles are interposed in the bottom portion of the groove into which body fluid flows, so-called 'gel blocking' occurs in which air gaps between the polymer particles swollen at the time of water absorption are extremely shrunken
Data Source
AI summary
An absorber includes a concave groove-shaped body fluid inflow portion along a longitudinal direction of an incontinence pad and over a range in the longitudinal direction including a body fluid discharge portion of a wearer, and a granular powder superabsorbent resin is arranged at least on a side edge portion of the absorber and over the range in the longitudinal direction including the body fluid inflow portion. Since the body fluid flowing into the body fluid inflow portion is diffused and is absorbed and held in the superabsorbent resin on the side edge portion of the absorber, it is possible to provide an adequate absorbed amount in the absorber despite the concave groove in the absorber. Even when the superabsorbent resin becomes swollen with absorbed body fluid, the body fluid inflow portion is not blocked, with the result that the absorption speed is not reduced.