In the production of Nylon filaments, polymer is melted and then pumped through a sand filter to a spinnerette. The filaments formed by the spinerette are cooled and solidified by air, before going to a humidifying chamber to stabilise the length of the spun polymer.
The yarn filaments are then lubricated by a finishing agent and then stretched or ‘drawn’ to a desired diameter before being wound onto a bobbin.
The lubrication stage can cause up to 1,000 mg/m3 of oil to be entrained in the exit air.
Begg Cousland Filtration System Vessel