Pet Urinal Pad with Differential Absorbing Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pet urinal mats are prone to side leakage when dealing with large volumes of urine, and their absorption efficiency is not ideal due to the edge portions being made of non-woven fabric, which lacks effective leakage prevention.
Innovation Solution
A stratiform pet urinal pad structure with a non-woven fabric coating layer, an absorbing layer composed of two parts - a fast absorbing layer with higher expansivity at the periphery and a regular absorbing layer in the middle, and a PE film leakage prevention layer, along with a toilet paper absorbing layer between the PE film and the absorbing layers, enhancing absorption and preventing side leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the edge portions of the urinal pad are made of non-woven fabric surface coating layer, then the pad can be manufactured with simple structure, but the edges are prone to leak when urine volume is large
Solution Approach 1:
The patent applies local quality by creating a differentiated absorbing layer structure where the peripheral portion has different properties than the central portion. Specifically, the peripheral absorbing layer has larger thickness and higher expansion ratio, while the central absorbing layer has smaller thickness and lower expansion ratio. This localized differentiation ensures that the edges effectively contain large volumes of urine without compromising overall manufacturing simplicity.
2Device complexity
If a single absorbing layer is used, then the device complexity is reduced, but the absorption efficiency is not ideal
Solution Approach 1:
The patent applies segmentation by dividing the absorbing layer into two distinct portions: a peripheral absorbing layer and a central absorbing layer. Each portion serves a specific function - the peripheral layer with larger thickness and expansion ratio handles edge containment and large volume absorption, while the central layer with smaller thickness provides base absorption. This segmentation significantly improves absorption efficiency compared to a single uniform layer.
3Quantity of substance
If the absorbing layer has high expansivity, then large volumes of urine can be absorbed, but the absorption speed may be reduced
Solution Approach 1:
The patent applies local quality by assigning different expansion ratios to different portions of the absorbing layer. The peripheral absorbing layer has a larger expansion ratio (0.8-1.2) optimized for containing large volumes of urine at the edges, while the central absorbing layer has a smaller expansion ratio (0.5-0.7) for faster initial absorption. This localized differentiation resolves the contradiction between absorption capacity and absorption speed.
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 prevents side leakage by forming raised edges at the periphery and a depression in the middle upon absorption, ensuring that large volumes of pet urine are contained within the pad.
Implementation Method 1
the absorbing layer is composed of two parts: a first absorbing layer arranged in the middle position of the urinal pad body and having a lower expansivity and a second absorbing layer arranged on the periphery of the first absorbing layer and having a higher expansivity
Implementation Method 2
An absorbing layer formed by mixing of wood pulp, PP fibers and super absorbent materials is arranged below the non-woven fabric surface coating layer
Implementation Method 3
a PE film leakage prevention layer below the absorbing layer
Data Source
AI summary
A leakage-prevention pet urinal pad includes a urinal pad body having a stratiform structure that includes: a non-woven fabric coating layer; an absorbing layer arranged below the non-woven fabric coating layer; a PE film leakage prevention layer arranged below the absorbing layer; and a toilet paper absorbing layer arranged between the PE film leakage prevention layer and the absorbing layer, wherein the absorbing layer includes two parts: a first absorbing layer arranged in a middle section of the urinal pad body and having a lower expansivity, and a second absorbing layer arranged at a periphery of the urinal pad body around the first absorbing layer and having a higher expansivity, thereby after absorbing water, the second absorbing layer becomes thicker than the first absorbing layer.