Filament waste, collected without stopping the line.

A textile manufacturer needed to vacuum large, continuous quantities of polyethylene filament — a light, stringy residual waste that, left to accumulate, clogs the machinery and causes malfunctions and production slowdowns.

The catch: the collection could never interrupt the production cycle. Emptying a full container mid-run would mean stopping the line — exactly what the system had to avoid.

Depureco designed a centralised system around a Puma 18 — a medium-to-high-power unit with a robust side-channel turbine delivering up to 1120 m³/h through 45,000 cm² of filtering surface. Feeding it are two pre-separators that work in alternation: while separator 1 vacuums, separator 2 discharges into a one-cubic-metre big-bag, then they swap.

The switch runs on a set interval — around ten minutes — with electronic level sensors triggering an early changeover if a separator fills sooner. Because one separator is always collecting while the other empties, the line never has to stop. Two gated safety cages, four status lights and a siren guard the discharge area: if a gate opens while the system is running, it shuts down immediately.

Filament waste is now collected continuously and disposed of in bulk big-bags, with no accumulation on the machinery and no stoppages to empty a container. The plant keeps running while the system quietly clears the waste in the background.