The main components of twin-screw extruder are briefly described

Screw and barrel

Twin-screw extruders, as the name implies, have two screws whose function is to push the material forward. This helps distribute heat into the resin in an even manner. You can use different types of twin screws. This includes co-rotating screws, where the screws rotate in the same direction. We also have counter-rotating screws, which rotate in the opposite direction.

Screws are said to engage each other when the centerline between their axes is exactly less than the diameter of the screw. Screws do not engage each other if the centerline between the screw shafts is the same diameter as the screw.

The barrel is fitted with screws that feed the molten resin into the mold, which creates pressure on the mold.

When you want to add additives to the resin, you can use a simultaneous twin screw extruder at high speed. It can also be used when you want to remove solvents.

If you use co-rotating twin screws, you can produce pipes and profiles.

On the other hand, reverse swivel screws can be used when you want to compound PVC and other resins.

Motor

The motor of your twin-screw extruder converts electrical energy into mechanical energy. It is this mechanism that enables all operations in the dual extruder to be utilized. There are different types and models of motors according to the size of twin-screw extruders.

Heater

The function of the heater is to supply heat to the tube. It is this heat that heats the barrel and melts the resin. The heater is usually along the barrel, so heat transfer occurs. Different types of heaters exist according to temperature requirements and applications.

Control cabinet

The extruder can control, monitor and report the current state information to the upper unit state.

Transmission

The function of the gearbox is to transfer energy from the motor to the screw. It also adjusts the motor speed to align with the speed of the screw. When it does this, it multiplies the torque, simultaneously multiplying by the Angle timing of the screw.

Cooling fan

The cooling fan function is to provide the temperature control necessary for the twin-screw extruder to operate.

Vacuum pump

In the vacuum pump part of the twin-screw extruder, the plastic products are cooled slowly and come in various shapes. Sudden cooling may cause deformation of the product.

Hopper

The hop-twin-screw feed system acts as a buffer box to ensure uniform resin flow and mixing.