Planetary Screw Roller Extruder For PVC PET Plastics

Planetary Screw Roller Extruder for processing PVC, PET materials

The planetary screw extruder has a planetary screw structure in the middle section of the screw (i.e. plasticizing section) or the entire screw (only the feeding section is not a planetary screw) of the extruder. When working, the central screw is used as the active screw, and there are multiple small diameter screws on its outer circumference that mesh and rotate with it. These small diameter screws can both rotate on their own and revolve around the central screw. This is because the outer circumference of the small screw also has an outer sleeve with spiral teeth that mesh with it. This jacket is also a barrel, which is fixed to the front and rear barrels with bolts. The thread cross-section of the screw is an involute tooth shape, and the spiral is a multi head thread.

 

The composition of the planetary screw barrel mainly includes the central screw, planetary screw, and barrel.

The central screw is an active screw, with multiple small diameter screws meshing and rotating around its outer circumference. These small diameter screws can both rotate on their own and revolve around the central screw. This is because the outer periphery of the small screw also has an outer sleeve with helical teeth meshing with it.

The barrel and the front and rear barrels are connected and fixed with bolts, and the threaded section of the screw is an involute tooth shape, with a multi head screw thread.

 

 

 

Structural characteristics of planetary screw extruders
Melting, plasticizing, and mixing materials: The planetary section is the core part of the planetary extruder, mainly used for melting, plasticizing, and mixing materials. This part consists of a central screw, several planetary screws, and a cylinder with teeth on the wall.
High strength materials: The center screw, planetary screw, and barrel are made of alloy steel with high tensile strength and wear resistance. The gap between the screw and the inner teeth of the barrel is generally 0.2-0.4 millimeters.These components work together to ensure the efficient and stable operation of the planetary screw extruder in plastic processing.

 

 

Standard equipment

Control system

Gear motor

Process section

Sensor technology

 

Optional equipment

Temperature Control Units (TCUs)

Various process section lengths

Feed screw

Planetary feed cylinder

Planetary spindles

Stop rings, dispersion rings, toothed intermediate rings

Side feeder

Dosing units

Dosierungen

Injection pumps

Degassing

Melt pumps

Nozzle heads

Radial pelletisers

Hot die-face pelletising

Underwater pelletising

 

Our extruder available sizes:

 

 

 

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