In-line Systems for Thermoformers
High volume thermoforming benefits greatly from direct coupling of the sheet extruder to the thermoformer, or in-line thermoforming. This includes sheet extrusion systems producing consumer packaging, medical packaging, food service and other disposable products.
A few examples of in-line sheet coextrusion systems are illustrated here. Depending on the sheet structure, capacity desired, and thermoformer width many other configurations and capacities are possible.
A/B/A SHEET COEXTRUSION SYSTEM
2200 Lb/Hr (1000 Kg/Hr) - PS/PET
1700 Lb/Hr (800 Kg/Hr) - PP
A/B/A SHEET COEXTRUSION SYSTEM
6000 Lb/Hr (2700 Kg/Hr)- PS/PET
5000 Lb/Hr (2270 Kg/Hr) - PP
A/B/A SHEET COEXTRUSION SYSTEM
2200 Lb/Hr (1000 Kg/Hr) - PS/PET
1700 Lb/Hr (800 Kg/Hr) - PP
- Rigid steel machine framework
- AC drive system
- Heavy duty gear reducer
- Bimetallic lined barrel with heater / coolers installed
- Extrusion screw designed for the specific polymer
- Extruder tooling
• Screen changer
• Melt pump
• Static mixer
• Adapter kit and heaters as required
2-1/2" (65 mm) 32/1 L/D Coextruder
- Rigid steel machine framework mounted on casters
- AC drive system
- Heavy duty gear reducer
- Bimetallic lined barrel with heater / coolers installed
- Extrusion screw designed for the specific polymer
- Extruder Tooling
• Screen changer
• Melt pump
• Static mixer
• Adapter kit and heaters as required
Coextrusion Manifold and Sheet Die
- Welex coextrusion block
- Layer profile adjustment
- Sheet die with manifold designed for the application
In-Line Sheet Take-off
- Three roll primary cooling and polishing stack
- Hydraulic roll actuation
- Individual roll drives
- Coating and gauging equipment as needed or requested
- Heat exchange system located on side positioned machine frame
System Electrical and Control
- Designed to handle all major power supplies
- Color touch screen HMI
- PLC control and coordination of all zones and drive motors
- High end control features available as requested
A/B/A SHEET COEXTRUSION SYSTEM
6000 Lb/Hr (2700 Kg/Hr)- PS/PET
5000 Lb/Hr (2270 Kg/Hr) - PP
7" (175 mm) 32/1 L/D Main Extruder
- Rigid steel machine framework
- AC drive system
- Heavy duty gear reducer
- Bimetallic lined barrel with heater / coolers installed
- Extrusion screw designed for the specific polymer
- Extruder Tooling
• Screen changer
• Melt pump
• Static mixer
• Adapter kit and heaters as required
4-1/2" (65 mm) 32/1 L/D Coextruder
- Rigid steel machine framework mounted on casters
- AC drive system
- Heavy duty gear reducer
- Bimetallic lined barrel with heater / coolers installed
- Extrusion screw designed for the specific polymer
- Extruder tooling
• Screen changer
• Melt pump
• Static mixer
• Adapter kit and heaters as required
Coextrusion Manifold and Sheet Die
- Welex coextrusion block
- Layer profile adjustment
- Sheet die with manifold designed for the application
In-Line Sheet Take-off
- Three roll primary cooling and polishing stack
- Hydraulic roll actuation
- Individual roll drives
- Coating and gauging equipment as need or requested
- Heat exchange system located on side positioned machine frame
System Electrical and Control
- Designed to handle all major power supplies
- Color touch screen HMI
- PLC control and coordination of all heat zones and drive motors
- High end control features available as requested
ROTARY DRUM SYSTEM
The entire sheet take-off is eliminated, as is any need to reheat the sheet, when material exiting the sheet die is cast directly onto the drum of a Rotary Drum thermoformer. Rotary Drum Thermoformers are used to produce lids, reticulated water-stop sheet, and other thin, shallow draft items. They are not suitable for deep draw items because they cannot be removed from the drum after forming.
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