Project of the month May 2017:Post-coextrusion
The task:
Space-saving integration of two post-coextruders on a calibration unit for the extrusion of a PVC-F soft lip and a TPE strip onto a roller shutter guide rail.
Mounting possibility for a 5m long calibration system consisting of a vacuum tank (3m), a spray waterbath (1m) and a post-coextrusion station (1m).
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2 parallel-mounted post-coextruders: Ø 38 mm for the PVC-F soft lip Ø 20 mm for the TPE strip |
The solution:
Calibration unit ME 16/6.5:
- Extrusion height 1100 mm
- Calibration table 700x6000 mm
- Longitudinal adjustment, motorized (± 250 mm)
- Height adjustment, motorized, separate for intake and outlet sides (± 60 mm)
- Cross adjustment (± 25 mm)
- 5 vacuum pumps, each 4,3kW with quick-change connectors
- 4 manifolds, each with 10 vacuum connections ½“ and 10 water connections ½“
- 1 vacuum connection 5/4“ for the spray waterbath
Single screw coextruder MEB 38/4x25D:
- AC drive 7,1 kW with spur reduction gearbox
- Screw speed max. 67 rpm
- Nitrided barrel with water-cooled entry zone
- 4 barrel heating/cooling zones
- Hopper, vol. 6 litres, with lid for the dosing unit
- Screw to process PVC-F (4 to 20 kg/h)
- Flexible heating hose, 1,0 m
- Melt pressure and temperature measuring
Single screw coextruder MEB 20/5x25D:
- AC flat gear motor 2,6 kW
- Screw speed max. 197 rpm
- nitrided barrel with water-cooled entry zone
- 2 barrel heating/cooling zones
- Hopper, vol. 6 litres, with lid for the dosing unit
- Screw to process TPE (0,5 to 5 kg/h)
- Flexible heating hose,1,0 m
Screen controller mini ME Control /4:
- 25,6 cm (10,1“) analogue, resistive Touchscreen
- Speed setting via digital potentiometer
- Temperature control with actual value display, heating current display and alarms
- Weekly timer
- Display of the main data on all pages
- Screen-assisted operator help
- Data carrier functions with interface (USB Port)
- Trend graphics
- Recording of process variables
- Recipe management
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| Vacuum system | Single screw exturder ME B 38/4x25D |