One-Sided Insecticide Textile Coating With Plasma-Enhanced Adhesion
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Solution Overview
Problem
Existing methods for coating fabrics with vector protection, such as permethrin, face challenges with durability and adhesion, particularly during washing, leading to reduced effectiveness over time.
Innovation Solution
An electromechanical treatment, like plasma or corona treatment, is applied to the fabric before coating, enhancing the adhesion and permanence of vector protection, making the fabric wettable and maintaining 93% residual protection after 100 washes, while allowing for hydrophilic properties and reduced active ingredient usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If chemical treatment is used to improve adhesion of vector protection, then initial adhesion is improved, but durability deteriorates over time and washing
Solution Approach 1:
The patent replaces chemical treatment with an electromechanical treatment (plasma or corona treatment) to activate the fabric surface. This physical treatment creates a more receptive surface for the vector protection coating without relying on chemicals that wash away, thus improving both initial adhesion and long-term durability through a non-chemical mechanism.
Solution Approach 2:
The patent changes the physical state and surface properties of the fabric through electromechanical treatment, altering parameters such as surface energy and roughness. This creates an optimized surface that enhances adhesion of the vector protection while maintaining durability through repeated washing, as the treatment modifies the fabric's inherent properties rather than adding temporary chemical agents.
2Reliability
If electromechanical treatment is applied to enlarge fabric surface, then adhesion and permanence are improved, but treatment complexity increases
Solution Approach 1:
The patent introduces an intermediary treatment step (electromechanical/plasma/corona treatment) that acts as a mediator between the fabric and the vector protection coating. This intermediary process prepares the fabric surface to enhance adhesion and permanence without requiring complex chemical formulations or multi-step chemical treatments, simplifying the overall system while improving reliability.
3Object-affected harmful factors
If vector protection is coated on one side only, then allergic reactions are reduced, but coating precision must be increased
Solution Approach 1:
The patent applies the vector protection coating to only one side of the fabric (the outer side), creating local quality differentiation. The electromechanical treatment is also applied selectively to enhance adhesion where needed. This localized approach reduces exposure to allergens for the wearer while maintaining protective function on the outer surface, and the selective treatment process manages the precision requirement by focusing modifications on specific fabric surfaces.
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 method significantly improves the durability and effectiveness of vector protection on fabrics, ensuring long-lasting mosquito paralysis and enhanced wearing comfort, with the option for one-sided coating and integration into binder systems for porous or microencapsulated forms.
Implementation Method 1
a low-pressure plasma technique is preferred. In plasma technology, gas is excited in a vacuum by supplying energy. This creates high-energy ions and electrons as well as other reactive particles that form the plasma
Implementation Method 2
the surface of the fabric threads is removed by the ion bombardment, so that one can speak of micro-sandblasting
Implementation Method 3
Finally, there is UV radiation in the plasma, which breaks down long-chain carbon compounds
Implementation Method 4
With regard to the electro-mechanical treatment, a plasma and/or corona treatment is currently preferred
Implementation Method 5
the adhesion of the vector protection is thus initially improved... the fabric as a whole is made wettable and vector protection remains permanent
Data Source
AI summary
Coating a fabric suitable for clothing, with a vector protection, preferably permethrin, comprises subjecting, preferably roughening the fabric, prior to coating, to an electromechanical treatment and coating the fabric on one side. An independent claim is also included for the fabric suitable for clothing, treated electromechanically and coated on one side with a vector protection. ACTIVITY : Insecticide. MECHANISM OF ACTION : None given.