The core equipment for chip spinning is the screw extruder, whose structural features include:
Feed section: Responsible for chip conveying and preheating; the screw channel is relatively deep to ensure efficient material feeding.
Compression section: Achieves material compaction, melting, and venting through variations in screw channel depth, transforming the phase from solid to melt.
Metering section: Homogenizes the melt and stabilizes pressure, ensuring the output melt has suitable viscosity and flowability for spinning.
Furthermore, based on the material's state within the screw extruder, it can be divided into a solid zone, a melting zone (where solid and liquid phases coexist), and a melt zone.
The spinneret assembly typically consists of a filter screen, a distribution plate, and a spinneret plate. Its function is to remove impurities from the melt and distribute the melt evenly to the spinneret orifices.
