Simply described, the twin-screw extruder is a machine consisting of two co-penetrating and self-cleaning identical screws which are mounted on shafts and rotate in the same direction in a fixed closed housing called « barrel » . The twin-screw extruders operate continuously with very short residence times.
We offer a wide range of twin-screw extruders with different characteristics depending on the industrial application and the degree of sophistication required. These machines are the heart of our continuous production lines for food & feed, cellulose pulp, plastics compounds, chemical compounds and energetic materials.
Key features of Clextral Evolum® extruders:
- Adapted power and speed : according to the product being processed, the extruders are proposed with screw speeds up to 1200 rpm and torque density up to 12 Nm/cm³, allowing to have an installed power perfectly adapted to the users needs
- Optimized temperature control : further extensive R&D work conducted by Clextral, the design of the Evolum® barrel sections provides the best cooling capabilities and allows an accurate control of the temperature profilegrâce à une conception homothétique
Easy scale-up : the Evolum® series has been conceived for a direct volumetric scale-up thanks to its homothetic design
- Patented barrel opening : Clextral proposes a direct hydraulic opening of the barrels to have an access to the screw profile without cumbersome shaft extraction
- Modularity : thanks to its presence in all twin screw extrusion markets, Clextral proposes the widest range of screw elements and barrel design
- Enhanced process control : PLC Fitsys+ controls perfectly the extruder and its ancillaries and interfaces easily with the line supervision
Evolum range :
| MODEL | SCREW DIAMETER | BARREL MODULE LENGTH | AVAILABLE L/D RATIOS |
| EV 25 | 25 mm | 100 mm | 24 to 40 |
| EV 32 | 32 mm | 128 mm | 12 to 48 |
| EV 53 | 53 mm | 212 mm | 12 to 48 |
| EV 68 | 68 mm | 272 mm | 12 to 48 |
| EV 88 | 88 mm | 352 mm | 12 to 48 |
| EV 145 | 145 mm | 580 mm | 12 to 40 |
