Water-Resistant Disinfestation Sheet with Diffusion Channels
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Solution Overview
Problem
Traditional pest control methods, such as insecticide sprays and pesticides, are ineffective for targeted and long-lasting pest extermination, pose environmental and health risks, and struggle with application on vertical surfaces, necessitating a safer and more convenient solution.
Innovation Solution
A disinfestation sheet with a polyethylene carrier layer containing pyrethroid-based pesticidal particles and channels for controlled diffusion, combined with a base, grip, and support layers for secure attachment, ensuring effective pest elimination while being water-resistant and safe for use indoors and outdoors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional insecticide sprays are used for pest control, then pest elimination is achieved, but the longevity of effect is limited and repeated application is required
Solution Approach 1:
The pesticidal ingredients are pre-encapsulated within the carrier layer during manufacturing, creating a reservoir that releases active ingredients over an extended period. This preliminary preparation eliminates the need for repeated applications, as the sheet provides sustained pest control effect through controlled diffusion from the encapsulated particles.
2Reliability
If traditional pesticides are applied in large amounts for effective pest control, then pest elimination is improved, but toxicity to children and pets increases
Solution Approach 1:
The carrier layer employs a porous polyethylene structure with channels that enable controlled diffusion of pesticidal ingredients. This porous architecture allows the active ingredients to be released in controlled, minimal amounts sufficient for pest control while reducing the overall quantity of pesticide needed, thereby lowering toxicity risks to children and pets.
Solution Approach 2:
The invention changes the physical state and release parameters of the pesticidal ingredients by encapsulating them in a solid carrier matrix. This transformation allows the pesticides to be delivered in controlled, low concentrations through diffusion rather than requiring large amounts of liquid spray, maintaining effectiveness while reducing harmful effects.
3Area of stationary object
If pesticides are applied to vertical or targeted surfaces, then pest control coverage is improved, but retention and security of the pesticide on the surface deteriorates
Solution Approach 1:
The invention uses a flexible sheet form factor that can be conformally attached to vertical and irregular surfaces. The thin film structure with adhesive properties ensures secure retention on targeted surfaces, eliminating the problem of pesticide runoff or detachment that occurs with traditional spray applications on vertical surfaces.
4Reliability
If the carrier layer allows diffusion of pesticidal ingredients to surfaces for pest contact, then pest control effectiveness is improved, but water penetration may occur causing loss of pesticidal particles
Solution Approach 1:
The carrier layer utilizes a porous polyethylene structure with specifically designed channels that enable selective transport. These channels have dimensions and surface properties that allow diffusion of pesticidal ingredients while excluding water molecules, achieving both effective pest control and water resistance simultaneously.
Solution Approach 2:
The invention employs a composite structure combining polyethylene carrier material with encapsulated pesticidal particles. This composite architecture provides both the diffusion pathway for active ingredients and inherent water resistance, as the polyethylene matrix and channel structure prevent water penetration while allowing controlled release of pesticides.
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 disinfestation sheet provides a convenient, effective, and safe means of pest control by diffusing pesticidal ingredients to react with pests' nerve cells, ensuring quick elimination and minimizing environmental and health hazards, with the ability to be securely attached to various surfaces without additional hardware.
Implementation Method 1
The channels form one or more paths between one or more pesticidal particles and at least one of the first and the second surfaces to allow diffusion of the active pesticidal ingredient from the pesticidal particles to at least one of the first and the second surfaces of the carrier layer
Implementation Method 2
The channels have a cross sectional dimension suitable to allow contents of the active pesticidal ingredient diffused from the pesticidal particles to pass through and arrive at the top/bottom surface of the carrier layer and to prevent liquid contents such as water from entering into the channels and contacting the pesticidal particles
Implementation Method 3
When pests move to become in contact with a disinfestation sheet, the pesticidal ingredient reacts with the pests' integral membrane protein, hindering the nerve cells and associated functions, eventually ceasing the functions of nerve cells and killing the pests within a short period of time
Data Source
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AI summary
A disinfestation sheet includes a carrier layer with a first and second surface with active pesticidal particles formed therein. The active pesticidal particles contain pesticidal ingredients selected from pyrethroid family or the like. The carrier layer has channels formed therein. The channels form one or more paths between one or more pesticidal particles and at least one of the first and the second surfaces to allow diffusion of the active pesticidal ingredient from the pesticidal particles to at least one of the first and the second surfaces of the carrier layer. The disinfestation sheet may further comprise antioxidant compounds. The disinfestation sheet may also have a base layer attached to the second surface of the carrier layer, an adhesive grip layer attached to the base layer and a support layer attached to the grip layer, where in the support layer is detachable. The carrier layer may also comprise ridges extending outwardly from the second surface. A method of manufacturing a disinfestation sheet comprising the mixing and blow-extrusion of pesticidal and polymer pellets is also defined.