Aromatic Animal Litter Granules with Waterstop Coating

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Solution Overview

Problem

Conventional animal litter with sprayed fragrances on water absorptive granular materials fails to effectively generate aroma and often leads to bad odors due to urine absorption and decay.

Innovation Solution

An aromatic granular material with a water absorptive core, a waterstop coating layer composed of less water absorptive materials, and a fragrance layer including a dispersing agent, where the waterstop coating layer prevents liquid from soaking into the core and the fragrance layer enhances aroma emission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If fragrance is sprayed on water absorptive granular materials, then the granular materials hold the fragrance, but the fragrance soaks into the inside of the granular materials together with urine, suppressing aroma generation and allowing urine to decay and generate bad odor

Engineering Contradiction:
Improvefragrance retentionVSAvoidbad odor generation
Core Design Contradiction:
Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The granular material is divided into three distinct layers: a water absorptive core, a waterstop coating layer, and a fragrance layer. This segmentation prevents urine from reaching the fragrance, eliminating bad odor while maintaining fragrance retention. The waterstop layer acts as a barrier that stops liquid penetration, keeping the fragrance layer dry and functional.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the granular material are assigned different functional properties: the core absorbs water, the coating layer stops water penetration, and the surface layer holds and releases fragrance. This local differentiation of properties allows each layer to perform its specific function optimally without interfering with others.

Inventive Principle:
Principle #3Local quality

2Quantity of substance

If water absorptive granular materials are used, then they absorb urine effectively, but the absorbed urine decays and generates bad odor

Engineering Contradiction:
Improveurine absorptionVSAvoidbad odor from urine decay
Core Design Contradiction:
Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The harmful function of the water absorptive core is extracted and isolated from the fragrance-containing regions. By placing the waterstop coating layer between the core and the fragrance layer, the urine absorption function is separated from the aroma generation function, preventing urine decay while maintaining absorption capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The waterstop coating layer serves as an intermediary barrier between the water absorptive core and the fragrance layer. It allows the core to perform its urine absorption function while preventing the absorbed urine from contacting the fragrance, thus eliminating the source of bad odor.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Object-generated harmful factors

If a waterstop coating layer is added to prevent liquid absorption, then aroma generation is improved, but the device complexity increases

Engineering Contradiction:
Improvearoma generation efficiencyVSAvoidgranular material structure
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The granular material is constructed as a composite structure combining three different material layers with distinct functions: water absorptive core material, waterstop coating material, and fragrance-containing surface material. This composite approach integrates multiple functions into a single granular unit, improving aroma generation while managing the complexity through material composition rather than mechanical complexity.

Inventive Principle:
Principle #40Composite materials

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 suppresses bad odor generation and enhances aroma emission by preventing liquid absorption into the core and utilizing a dispersing agent to facilitate fragrance dispersion in water, improving the overall performance of the animal litter.

Implementation Method 1

a waterstop coating layer being formed on a surface of the core, and being composed of a waterstop material which is less water absorptive than the core

Methodology Applied
Scientific EffectHydrophobicity: Hydrophobe

Implementation Method 2

The fragrance layer further includes a dispersing agent capable of dispersing the fragrance into water

Methodology Applied
Scientific EffectDispersion: Dispersion (of waves)

Implementation Method 3

a dispersing agent capable of dispersing the fragrance into water

Methodology Applied
Scientific EffectSurfactant action: Surfactant

Data Source

PatentEP3081079B1Aromatic particles, and toilet sand for animals
Publication Date: 2018.08.22 UNI CHARM CORP
  • EP3081079B1 patent drawingFigure 1~2

AI summary

An aromatic granular material and animal litter are provided, which are favorable in the generation of an aroma, and capable of effectively suppressing generation of a bad odor. An aromatic granular material to be used for animal litter including a plurality of granular materials includes: a water absorptive core; a waterstop coating layer being formed on a surface of the core, and being composed of a waterstop material which is less water absorptive than the core; and a fragrance layer including a fragrance and being formed on a surface of the waterstop coating layer. It is preferable that the fragrance layer further includes a dispersing agent capable of dispersing the fragrance into water.