Skip to main content

Table 3 Secondary hole damage morphologies identified in LLINs

From: Textile testing to assess the resistance to damage of long-lasting insecticidal nets for malaria control and prevention

Type of damage

Damage morphology

Mechanism

Laddering

View full size image

Enlargement of an initial hole by pulling out of successive knitted loops in the LLIN fabric structure following yarn breakage

Unravelling

View full size image

Enlargement of an initial hole by unlooping of the yarns in the knitted LLIN fabric structure following initial yarn breakage

Secondary tearing

View full size image

Tensile breakage of yarns within the fabric plane, in one or more directions. For example, after the LLIN is caught on a solid pointed object and then pulled in a perpendicular direction