The flexible modular principle is realised with screw barrel sections from the wide range of different designs possible. Fast, intensive and uniform heating of the screw barrel sections is ensured by electrical heaters. The barrel sections are cooled with water, by means of an internal bore system, with bores arranged close to the inside barrel wall.
Barrel sections are available as:
• Closed barrel section
• Barrel section with opening for material feedor atmospheric vent or for devolatilization
• C-type Bi-metal wear resistance alloy linersupplied to barrels for high wear resistance.
The first barrel is for feeding with no heaters. The following barrels will be equipped with cast copper heaters. The processing section is provided with stainless steel plates as a protection against accidental contact.
According to different materials to choose different material liners.
There are two main liner: C-type liner and complete liner.