Plant-Based Pet Litter with Controlled Water Absorbency
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Solution Overview
Problem
Conventional pet excreta treating materials either disintegrate quickly upon water absorption, leading to frequent replacement and odor issues, or maintain shape but reduce deodorizing performance over time, necessitating a solution for long-lasting, odor-resistant, and stable pet litter.
Innovation Solution
A molded pet excreta treating material made from a ground material of plant origin with moderate water absorbency, specific gravity between 0.8 to 1.2, and a synthetic resin binder, designed to slowly swell and maintain deodorizing performance over extended periods without disintegration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional excreta treating material is used, then urine absorption is achieved, but the material disintegrates quickly and deodorizing performance is lost
Solution Approach 1:
The patent uses a composite material consisting of plant-origin ground material (such as wood flour, bark flour, or agricultural waste) combined with a water-resistant additive. This composite structure allows the material to absorb urine while the water-resistant component prevents disintegration and maintains shape retention over extended periods, resolving the contradiction between urine absorption capability and shape stability.
Solution Approach 2:
The patent modifies the water resistance parameter of the excreta treating material by adding water-resistant additives and controlling the water absorbency within a specific range (5-20% by weight). This parameter control ensures the material absorbs sufficient urine for deodorization while resisting excessive water uptake that would cause disintegration, thereby maintaining both shape retention and deodorizing performance over time.
2Quantity of substance
If water absorbency is increased to improve urine absorption, then deodorizing performance improves, but swelling and disintegration increase
Solution Approach 1:
The patent optimizes the water absorbency parameter to a specific range (5-20% by weight) and controls the swelling ratio to remain below 1.2 times the original volume. By precisely controlling these parameters through material composition adjustment and water-resistant additives, the material achieves sufficient urine absorption capacity while maintaining structural integrity and preventing disintegration.
Solution Approach 2:
The patent employs porous plant-origin ground materials that provide capillary structures for urine absorption. The porous structure enables the material to take in urine through capillary action within the controlled water absorbency range, achieving effective urine absorption without excessive swelling that would lead to disintegration.
3Volume of stationary object
If material density is increased to reduce volume, then storage efficiency improves, but water absorbency decreases
Solution Approach 1:
The patent optimizes the specific gravity of the excreta treating material to range from 0.6 to 1.2, balancing density and water absorbency. This parameter optimization ensures the material occupies reasonable volume in the litter box while maintaining sufficient urine absorption capacity through the controlled water absorbency of 5-20% by weight.
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 material effectively absorbs urine, maintains deodorizing performance for over a month, and resists swelling and disintegration, reducing the need for frequent replacement and minimizing odor issues.
Implementation Method 1
liquid waste discharged by a pet animal is allowed to quickly pass the excreta treating material placed in the upper compartment
Implementation Method 2
be positively absorbed by an urine absorbent member, such as a urine absorbing mat, laid in the lower compartment
Implementation Method 3
The excreta treating material has a higher water absorbency in the third measurement than in the first measurement, a water absorbency of 3% to 30% by weight in the third measurement
Data Source
AI summary
A pet excreta treating material made mainly of a ground material of plant origin and having a higher water absorbency in the third measurement than in the first measurement, a water absorbency of 3% to 30% by weight in the third measurement, and a specific gravity of 0.8 to 1.2 measured before the first water absorbency measurement. The water absorbency is measured by immersing a dried excreta treating material in 25° C. water for 3 seconds and calculating the weight increase by the equation below, which is taken as water absorbency (%). In the second and following measurements, the excreta treating material immediately after the preceding measurement is dried and immersed in 25° C. water for 3 seconds to obtain a water absorbency in the same manner.Water absorbency (%)=[(weight of excreta treating material after immersion−weight of excreta treating material before immersion)/(weight of excreta treating material before immersion)]×100.