| |
The need to remove volatile matter from liquefied polymers has long been a preoccupation of process technology and has been the subject of wide-ranging intensification of efforts in recent years.
Increased requirements in terms of purity and appearance of products demand effective degassing. High-output machines in particular present special challenges for degassing, due to the short hold time of the liquefied material in the extruder.
| Use |  |  |
The twin-screw side degassing unit is used in high-output and rapidly rolling products, such as food, high-fill (TK and TPE) and in chemical applications.
| Machinery | | |
The twin-screw side degassing unit is based on components from the twin-screw side feeder and was optimized for the task of degassing.
The main focus was on rapid assembly/disassembly, simple cleaning and high levels of flexibility.
The modular construction with quick-action locks on the gearbox and degassing unit allows for rapid re-equipping.
| Mounting | | |
The unit is mounted to the side of the extruder, either with a moving base frame on rollers or with a swivel arm.
Furthermore, there is the option of also operating the twin-screw side degassing unit vertically above the main extruder. To that end, it is possible to re-equip the existing open housing with an insert.
| Series | | |
| |
Torque per shaft(Nm) |
Screw rpm (min-1) |
Motor power (kW) |
Diameter of container for melt residue collection |
Connection to vacuum port |
|
ZS-EG 40 |
13,4 |
200 |
0,55 |
DN80 |
DN50
(DIN28403) |
|
ZS-EG 58 |
35,8 |
1,50 |
DN80 |
|
ZS-EG 70 |
1,50 |
DN125 |
DN65
(DIN 32676) |
|
ZS-EG 92 |
52,5 |
2,20 |
DN125 |
| Why the new twin-screw side degassing unit? | | |
| - | | Increased quality requirements from the market |
| - | | Increased operating safety for high-output and rapidly rolling products |
| - | | Simplifying design (servicing and assembly) |
| - | | Use of standard twin-screw side feeder components (connecting to standard ZSK combination housing) |
| Innovations | | |
| - | |
Quick disconnection gears using swivel disks (ZS-EG 58) |
| - | | Vacuum flange with bayonet catches and clamp connection |
| - | | Use of standard elements from twin-screw side feeder modules |
|
- Exchangeability
- High variability
- Price advantages |
| - | | Horizontal/vertical arrangement on extruder |
| - | | Can be re-equipped on ZSK with combination housings or open housings |
| - | | Rapid assembly/disassembly using quick disconnection and the moveable base frame |
| - | | Cleaning simplified by using fast-action locks |
| - | | Use in foods, high-fill (TK and TPE) and in chemical applications |
| - | | High flexibility from the directly installed frequency converter (optional) |
|
|
