Davis Standard Sheet Co extrusion line

1x Davis Standard, Sheet Co extrusion line, 2008

2290mm (90")
115mm extruder
s/changer, melt pump, 2150mm (84.6") die head, 2290mm (90") stack
Haul off cutter. Davis Standard coextrusion capable sheet line for thick sheet comprising:
* 115 mm Davis Standard Extruder 30:1 L/D ratio
Heavily chrome plated barrier screw said to be designed by DS for HDPE & PP. 6
Zone Electrically heated barrel air cooled barrel
Heavy duty gear reducer with double reduction helical gears
Nominal reduction ratio of 17:1. Rated 298 kw at 100 RPM with a 1.50 service factor
Thrust bearing with a B-10 life of 453,000 hours at 100 RPM and 345 bar
Belted connection of motor to input shaft
Extruder component built October 2008 is virtually unused
305KW DC drive motor modern laminated frame with fan cooling and tach speed
Feedback 1850/2150/2350 with field weakening
( screw rpm max 105/122/134 depending on material), yr 2000 *
Extek 150mm hydraulically operated lantern slide Screen Changer with power pack
And accumulator, 1997 * Eurotherm control panel suite housing :
Main DC drive motor Thyristor unit ( with dedicated field weakening module
For higher screw speed), gear pump thyristor unit and
+20 zone temperature controls (includes 7 die zones) + melt Temp indicator
Integrated pressure instrument panel : prescreen post screen melt pressure
1997 * Maag Trudex 90/56 gearpump with Lenze reduction gearbox 20kw Lenze
DC drive motor @ 3150rpm max giving 110rpm on gear pump
* Static Mixer * Coextrusion block with removable Coex plate, adaptor
( a range of coextruders available at extra cost)
2150mm EDI Ultraflex sheet die, inclined choke bar flexilip with removable bottom lip
Die gap approx. 6mm, Die support stand
Pedestal panel adjacent to Roll stack for operator control of rolls open/close
Hauloff open/close, centerline height adjustment, retrack forward and back
* 2290mm Sterling 3 roll vertical Polishing Stack with 3x400mm 3xindividual drives
Via reduction gearbox and 2.2kw DC motors with encoder speed feedback
Giving roll speeds up to 3.7rpm up to 4.7m/min
Hydraulic ram top and bottom roll engagement with Hydraulic power pack and accumulator
Taper wedge bottom nip gap adjustment, Rotary valves for roll heating / cooling
Roll center line motorized height adjustment, retract motor and gear box
Stack mounted upon v groove wheels with rails * 3 independent
Roll oil temperature controllers each with multi bank heaters
Oil pump and water cooled heat exchangers model HT40 * Cooling conveyor
* 2290mm Sterling 2 roll hauloff with rubber covered roll
Pneumatic ram roll engagement, bottom roll driven by 2.2 Kw DC
Drive motor with encoder speed feedback via reduction gearbox
* Cooling conveyor * Heavy duty Guillotine sheet cutter
With motorised conveyor discharge Sheet & Cast