Extruded Animal Litter Reducing Density via Clay-Starch Composite
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Solution Overview
Problem
Conventional clay-based animal litters are dense, difficult to handle and transport, non-biodegradable, and prone to dust contamination.
Innovation Solution
Extruded animal litters comprising 10-90% clays and 90-10% starches, which reduce density, prevent dust formation, and enhance biodegradability, using a combination of non-swelling and swelling clays with starches to create a low-density, dust-reducing, and biodegradable composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional clay-based compositions are used to produce animal litters, then the litters have good moisture absorption and odor control properties, but the litters become heavy and difficult to handle and transport
Solution Approach 1:
The patent uses a composite material system combining clay particles (for moisture absorption and odor control) with starch binder (for structural integrity and reduced density). This composite approach allows the litter to maintain functional properties while reducing overall weight and improving handleability.
2Reliability
If conventional clay-based compositions are used to produce animal litters, then the litters have good moisture absorption properties, but the litters are not readily biodegradable and produce dust contamination
Solution Approach 1:
The patent changes the chemical composition parameters by incorporating starch as a binder instead of traditional clay-only formulations. This parameter change enables the litter to be biodegradable and significantly reduces dust generation while maintaining moisture absorption capabilities through the clay component.
3Reliability
If high clay content is used in animal litters, then the litters have improved moisture absorption and odor control, but the litters become denser and more expensive to transport
Solution Approach 1:
The patent applies local quality by distributing clay particles throughout the starch binder matrix rather than using bulk clay. This allows moisture absorption functionality to be localized at particle surfaces while the overall structure maintains lower density and reduced transport costs.
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 extruded litters are lighter, easier to handle and transport, produce less dust, and are more environmentally friendly while maintaining effective moisture absorption and odor control properties compared to conventional clay-based litters.
Implementation Method 1
the starch gelatinize and produce a film of clay and starch on the surface of the litter
Data Source
AI summary
The invention provides extruded animal litters and methods of making and using such litters. The animal litters comprise an extruded mixture of from about 10 to about 90% of one or more clays and from about 90 to about 10% of one or more starches. The use of starches to produce the extruded litters result in litters that are less dense than conventional clay-based animal litters and are therefore easier to transport and use.