Composite Absorbent Particles for Clumping and Odor Control
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Solution Overview
Problem
Current cat litters have inadequate clumping strength and odor control, with high concentrations of odor-controlling actives being necessary, leading to increased production costs and malodor issues, while also being dusty and having poor long-term odor management.
Innovation Solution
Composite absorbent particles are created through agglomeration processes that incorporate performance-enhancing actives like antimicrobials and odor absorbers, encapsulated within the particles to provide improved clumping, odor control, and reduced bulk density, allowing for lower active concentrations and enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If granular activated carbon is dry blended with litter, then odor control is improved, but litter becomes dusty and production cost increases
Solution Approach 1:
The patent combines odor-controlling actives with absorbent particles through agglomeration to form composite particles. This merging ensures uniform distribution of actives throughout the litter, preventing dust generation while maintaining effective odor control. The composite structure integrates multiple functions (absorption and odor control) into a single particle system.
Solution Approach 2:
The invention creates composite absorbent particles by combining absorbent material with odor-controlling actives, binders, and other additives through agglomeration. This composite approach allows optimization of each component's properties while achieving synergistic effects, reducing the need for high concentrations of expensive actives like GAC.
2Object-affected harmful factors
If high concentrations of odor-controlling actives are used, then odor control is improved, but production cost increases
Solution Approach 1:
The patent applies odor-controlling actives locally within the structure of absorbent particles rather than uniformly throughout the entire litter volume. By incorporating actives into the core and surface regions of composite particles, the invention maximizes odor control effectiveness while minimizing the total quantity of expensive actives required.
Solution Approach 2:
The agglomerated composite particles create a porous structure that allows odor molecules to access active sites within the particle matrix. This porous architecture increases the effective surface area for odor control, enabling lower concentrations of actives to achieve the same odor control performance.
3Object-affected harmful factors
If clay particles are mixed and compressed into particles, then odor control is improved, but particle strength and uniformity deteriorate
Solution Approach 1:
The patent introduces binders as intermediary substances that facilitate the formation of strong, uniform composite particles. Binders act as adhesives that bond absorbent particles, odor-controlling actives, and other components together, creating mechanically strong composite structures that maintain particle integrity during handling and use.
Solution Approach 2:
The invention optimizes processing parameters such as moisture content, compression force, and agglomeration conditions to produce uniform composite particles with consistent strength. By controlling these parameters, the patent achieves both strong particle formation and uniform distribution of odor-controlling actives throughout the composite structure.
4Quantity of substance
If clay is used as absorbent material, then absorbency is improved, but clump strength and aspect ratio deteriorate
Solution Approach 1:
The patent creates composite particles by combining clay absorbent material with binders, odor-controlling actives, and other additives. This composite structure enhances the mechanical strength of clumps while maintaining the high absorbency properties of clay. The synergistic combination of materials provides both absorption capacity and structural integrity.
Solution Approach 2:
The invention modifies the physical and chemical parameters of clay particles through agglomeration and composite formation. By controlling particle size distribution, moisture content, and bonding characteristics, the patent optimizes both absorbency and clump strength, achieving a balance between liquid absorption capacity and mechanical integrity for effective clumping.
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 strong clumping, effective odor control with lower active concentrations, reduced dust, and longer-lasting performance, addressing the limitations of existing cat litters by optimizing the distribution and retention of actives within the particles.
Implementation Method 1
sodium bentonite is a water-swellable clay which, upon contact with moist animal waste, is able to agglomerate with other moistened sodium bentonite clay particles
Implementation Method 2
granular activated carbon (GAC) into the litter
Implementation Method 3
An optional performance-enhancing active is coupled to the absorbent material during the agglomeration process, homogeneously and/or in layers
Implementation Method 4
odor absorbers/inhibitors... effective odor control with lower active concentrations
Data Source
AI summary
Composite particles and methods for making the same. An absorbent material is formed into a particle. An optional performance-enhancing active is coupled to the absorbent material before, during, or after the particle-forming process, homogeneously and/or in layers. Additionally, the composite absorbent particle may include a core material. Preferred methods for creating the absorbent particles include a pan agglomeration process, a high shear agglomeration process, a low shear agglomeration process, a high pressure agglomeration process, a low pressure agglomeration process, a rotary drum agglomeration process, a mix muller process, a roll press compaction process, a pin mixer process, a batch tumble blending mixer process, an extrusion process, and a fluid bed process.