Mosquito Net Lower Barrier Structure for Abrasion-Resistant Protection
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Solution Overview
Problem
Mosquito nets used in rural areas face durability and insecticidal efficacy issues due to wear and tear, particularly the lower part being exposed to dirt and mechanical abrasion, leading to reduced insecticidal activity over time.
Innovation Solution
Incorporating a lower part with insecticidal fabric, tarpaulin, or foil extending beyond the traditional 10-25 cm border, featuring higher tear strength, mesh density, or yarn density, which reduces dirt accumulation and abrasion, maintains insecticidal efficacy, and provides additional privacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a traditional border of 10-25 cm is used at the lower edge of the net, then the net provides basic protection against wear, but the lower part is still exposed to dirt accumulation and mechanical abrasion, reducing insecticidal activity over time
Solution Approach 1:
The patent applies different material properties to different parts of the mosquito net. The lower part (extending 40 cm or more from the bottom edge) is made of fabric with higher tear strength and different properties than the upper net part. This local differentiation protects the lower, more exposed section while maintaining the overall net structure, directly resolving the contradiction between wear resistance and insecticidal durability.
Solution Approach 2:
The mosquito net combines two different materials: the upper net part and the lower fabric part with higher tear strength. This composite structure allows each material to perform its optimal function - the net provides insect barrier function while the fabric provides enhanced wear and abrasion resistance, thereby maintaining insecticidal activity longer.
2Stability of the object's composition
If the lower part of the net is made of traditional net material, then the net maintains consistent material properties throughout, but dirt accumulates easily in the meshes and mechanical abrasion reduces insecticidal content
Solution Approach 1:
The patent changes the material property locally at the lower part of the net. Instead of using uniform net material throughout, the lower 40 cm or more is made of fabric with higher tear strength that resists dirt accumulation and mechanical abrasion better than traditional net material, while the upper part retains the original net structure.
3Duration of action of stationary object
If a longer lower border is used to increase durability, then the net provides better protection against wear, but the net becomes more complex and the insecticidal treatment may be compromised
Solution Approach 1:
The patent merges the border protection function with the lower part of the net itself. Instead of adding a separate, complex border structure, the lower part of the net is made of fabric with higher tear strength that serves both as the net structure and as the protective border, extending 40 cm or more from the bottom edge.
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
An insecticidal barrier (1) having an upper net part (2) with a mesh size preventing insects, for example mosquitoes, to transverse the barrier, the upper net part (2) having a first content of insecticide. In addition, the insecticidal barrier (1) has a lower part (3) with an insecticidal fabric, tarpaulin, foil, woven or knitted fabrics or non-woven, or net with a net material having a higher tear strength than the net of the upper part (2) in order to make the lower part (3) of the net more durable.