Lightweight Clumping Animal Litter Using Cellulosic Bentonite Composites

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Traditional sodium bentonite clay litters are heavy, expensive, and lack effective odor control, while requiring high concentrations of sodium bentonite for clumping properties, which is not sustainable.

Innovation Solution

Composite particles comprising flat-shaped cellulosic materials and powdered sodium bentonite, optionally with spacer and binder materials, formed through a high shear agglomeration process to create a lightweight litter with clumping strength equivalent to traditional clay-based litters using significantly less sodium bentonite, and incorporating kaolinite to reduce static charge and improve color.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional sodium bentonite clay litters are used to achieve clumping properties, then clump strength is maintained, but bulk density becomes too high and weight increases significantly

Engineering Contradiction:

Improveclump strengthVSAvoidbulk density

Core Design Contradiction:

StrengthVSWeight of stationary object

Solution Approach 1:

The patent combines sodium bentonite clay particles with lightweight porous particles (such as expanded perlite, expanded vermiculite, or styrofoam particles) to create a composite litter material. This composite structure maintains the clumping ability of sodium bentonite while the porous lightweight particles reduce overall bulk density by up to 60%, resolving the contradiction between clump strength and weight.

Inventive Principle:

Principle #40Composite materials

2Reliability

If high concentrations of sodium bentonite (≥90%) are used to achieve effective clumping, then clump formation is successful, but resource sustainability decreases and cost increases

Engineering Contradiction:

Improveclump formation effectivenessVSAvoidsodium bentonite consumption

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent uses sub-optimal concentrations of sodium bentonite (less than 90%, such as 10-50% by weight) combined with lightweight porous particles to achieve sufficient clumping performance. The porous particles compensate for the reduced clay content by providing structural support and absorbency, allowing effective clump formation with significantly reduced sodium bentonite consumption and improved sustainability.

Inventive Principle:

Principle #16Partial or excessive action

3Strength

If traditional clay-based litters are used, then clumping properties are achieved, but odor control capabilities remain insufficient

Engineering Contradiction:

Improveclumping capabilityVSAvoidmalodor production

Core Design Contradiction:

StrengthVSObject-generated harmful factors

Solution Approach 1:

The patent introduces odor-controlling agents (such as activated carbon, zeolite, or encapsulated fragrance materials) as intermediary components within the composite litter structure. These intermediaries are distributed among the sodium bentonite and lightweight particles, providing odor absorption and masking capabilities while the sodium bentonite maintains clumping function and the porous particles provide structure and weight reduction.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 composite particles achieve up to 60% reduction in bulk density and maintain clump strength of over 80%, while reducing static charge and dark color issues, providing effective odor control and sustainability.

Implementation Method 1

sodium bentonite (aka Na-bentonite) is a water-swellable clay which, upon contact with moist animal waste, is able to agglomerate with other moistened sodium bentonite clay particles

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

sodium bentonite (aka Na-bentonite) is a water-swellable clay

Methodology Applied

Scientific EffectSwelling:

Implementation Method 3

using a high shear agglomeration process to mix the cellulosic particles and the sodium bentonite particles to form composite particles

Methodology Applied

Scientific EffectAgglomeration:

Data Source

PatentUS10212916B2Lightweight clumping animal litter and methods thereof

Publication Date: 2019.02.26 THE CLOROX CO

AI summary

Animal litter having up to a sixty percent reduction in bulk density can be produced by combining flat-shaped cellulosic materials and sodium bentonite clay. Not only is the resulting litter lighter, but it also maintains a high clump strength as compared to clay-based animal litters that contain greater than ninety percent by weight sodium bentonite clay.