Fig. 1

The foulard process for impregnated ITNs. The net starts on a roller (1) and is lead into a bath with insecticide suspension (2), then between two rollers pressed against each other (3) to squeeze out excess fluid. The net passes through a multisector oven where each section can be temperature regulated to heat cure it (4) and finally the finished net is rolled up again (5) ready for cut and sew