The processes in which the synthetic fibres are produced by means of gear pumps are polymerisation, polyaddition and polycondensation. Usually fibres are produced by spinning processes. Here, too, a distinction is made between different processes.
The melted polymer is brought to the required pressure level by a BOOSTER pump and then conveyed to so-called spinning pumps or spinnerets. The fiber is produced by forcing the melt through a fine nozzle. It then passes through further treatment stages to finally obtain the desired properties such as elongation or thickness. Different polymers and processes are used, depending on the manufacturing method - dry, wet or melt spinning.