Dual-Release Plaster Tablets for Mosquito Control
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Solution Overview
Problem
Current pest control methods lack effective extended and dual-release formulations for active ingredients in water-based applications, such as mosquito control, which require sustained or rapid release profiles to manage pest populations effectively.
Innovation Solution
Development of extended and dual-release tablet compositions comprising a plaster and binder system that provides either immediate or prolonged release of active agents when submerged in water, utilizing a combination of polyethylene glycol and plaster of Paris to form a gypsum matrix that controls the release of active ingredients over varying time frames without the need for water addition during preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a plaster and binder system is used to form extended release tablets, then the duration of action is improved (at least 30 days), but the manufacturing complexity increases due to the specific mixing and heating requirements
Solution Approach 1:
The patent applies parameter changes by controlling the heating temperature (40-75°C) and mixing time to achieve the desired extended release properties. By adjusting these parameters, the plaster and binder system forms a matrix that releases active ingredients over at least 30 days, resolving the contradiction between duration and manufacturing complexity.
Solution Approach 2:
The patent uses composite materials by combining plaster with specific binders to create a matrix system that provides controlled extended release. This composite approach allows the tablet to maintain structural integrity while releasing active ingredients slowly over time, achieving both long duration and manageable manufacturing complexity.
2Adaptability or versatility
If a dual-release composition is developed with both quick release and extended release components, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the tablet into distinct functional components: a quick release portion and an extended release portion. This segmentation allows each component to perform its specific function independently, providing both immediate and prolonged release capabilities while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent applies local quality by creating different release characteristics in different portions of the tablet. The quick release portion contains ingredients for immediate action, while the extended release portion contains ingredients for prolonged action. This local differentiation achieves versatility without requiring complex overall structure.
3Ease of manufacture
If water is not added during mixing, then the ease of manufacture is improved, but the manufacturing precision may be compromised due to difficulty in achieving proper mixture consistency
Solution Approach 1:
The patent replaces the mechanical mixing system (which would require water addition) with a thermal processing approach. By heating the mixture to 40-75°C, the binder becomes more flexible and achieves proper consistency without water. This substitution maintains manufacturing simplicity while achieving the required precision through thermal rather than mechanical means.
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 tablets achieve controlled release of active ingredients, providing effective pest control by maintaining the active agent's presence in water for extended periods, ensuring sustained action against mosquitoes and other pests, while also allowing for rapid initial release when needed.
Implementation Method 1
a plaster and a binder, wherein the composition provides an extended release of the active agent over a period of at least 30 days when placed in water
Implementation Method 2
heating the mixture at about 40° C. to about 75° C., and cooling the mixture. The method may further comprise breaking up the cooled mixture into granules and compressing the granules into a tablet
Data Source
AI summary
Provided are cap layer compositions and base layer compositions, providing quick and extended release of an active ingredient, respectively, when placed in water. Further provided are dual release compositions including a base composition and a cap composition. The base composition may include a plaster and an active agent, and it may further include at least one of a water-soluble binder, a non-water-soluble binder, and a lubricant. The cap composition may include a plaster and an active agent, and it may further include at least one of a disintegrating agent, a non-water-soluble binder, and a lubricant. The compositions may be heated and mixed and formed into a tablet. Further provided are methods of making the compositions. Further provided are methods of controlling or eliminating pests and methods of increasing the potability of water. The compositions are effective for controlling or eliminating pests such as mosquitoes when applied at an application site.