The plastic plasticizing screw distinguishes three sections according to the geometric appearance:
1. Feeding zone (feeding zone) This section is the ditch depth of the fixed screw groove. Its function is to be responsible for preheating and plastic solid conveying and pushing.
2, compression zone (compression zone) This section is the taper screw thread depth, its function is plastic material melting, mixing, shear compression and pressurized exhaust.
3, metering area (metering area) This section is the screw groove fixed groove depth, its main function mixing, melt transfer, metering, must also provide sufficient pressure to maintain the uniform temperature of the melt and stabilize the molten plastic flow.