Textile physical barriers: an assessment of the prison effect as a design criterion to increase the porosity without loss of efficacy
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2023-05-19Resumen
Insect-proof screens are a physical method of crop protection against pests whose use
is widespread. The hole size must be optimized since too small holes give rise to poorly porous
textiles that cause a significant reduction in the permeability of the textiles to air. A common design
strategy is to use a rectangular-hole geometry with the aim of limiting the hole width to prevent
insect entry and increasing the hole length to increase the hole surface. However, the validity of this
approach has not been tested, and indications suggest that it may not be offering the expected results.
The results obtained discredit this widely accepted design criterion since they show that, while the
hole width is maintained, protective screens lose efficacy as the hole length increases at least in the
range of values considered. It is not possible to find an explanation for these results by considering
the hole geometry from a two-dimensional point of view. However, when considering the spati...
Palabra/s clave
technical textiles
agrotextiles
physical barriers
insect-proof screens
protective screens
hole geometry
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