Company founded 1975 US-based machinery business experienced in worldwide sales.

+1 (864) 574-0404
Global website

Choose your language

Languages follow BCP 47. Flags and countries are representative context only.

Automatic translation Machine specifications, model codes, and reference numbers should always be confirmed in the original listing.
Menu
Call +1 (864) 574-0404 Email Us

Davis Standard, Sheet Co-Extrusion Line, 2008, 2290mm Width, 115mm Extruder, 30:1 L/D

Description

  1. Overview
    1. Davis Standard coextrusion capable sheet line for thick sheet
    2. Width: 2290 mm
    3. 115 mm extruder
    4. Screen changer
    5. Melt pump
    6. 2150 mm die head
    7. 2290 mm stack
    8. Haul off cutter
  2. Extruder
    1. 115 mm Davis Standard extruder with 30:1 L/D ratio
    2. Heavily chrome plated barrier screw designed by DS for HDPE and PP
    3. 6 zone electrically heated barrel, air cooled barrel
    4. Heavy duty gear reducer with double reduction helical gears
    5. Nominal reduction ratio of 17:1
    6. Rated 298 kW at 100 rpm with a 1.50 service factor
    7. Thrust bearing with a B-10 life of 453,000 hours at 100 rpm and 345 bar
    8. Belted connection of motor to input shaft, year 2008
    9. Extruder component built October 2008 is virtually unused
    10. 305 kW DC drive motor, modern laminated frame with fan cooling and tacho speed feedback, 1850/2150/2350 with field weakening (screw rpm max 105/122/134 depending on material), year 2000
  3. Screen Changer
    1. Extek 150 mm hydraulically operated lantern slide screen changer with power pack and accumulator, year 1997
  4. Control Panel
    1. 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) plus melt temp indicator
    2. Integrated pressure instrument panel: prescreen post screen melt pressure, year 1997
  5. Gear Pump and Mixer
    1. Maag Trudex 90/56 gear pump with Lenze reduction gearbox
    2. 20 kW Lenze DC drive motor at 3150 rpm max giving 110 rpm on gear pump
    3. Static mixer
  6. Coextrusion Block
    1. Coextrusion block with removable coextrusion plate and adaptor (a range of coextruders available at extra cost)
  7. Die
    1. 2150 mm EDI Ultraflex sheet die, inclined choke bar flex lip with removable bottom lip
    2. Die gap approximately 6 mm
    3. Die support stand
  8. Operator Pedestal Panel
    1. Pedestal panel adjacent to roll stack for operator control of rolls open/close, hauloff open/close, centreline height adjustment, retract forward and back
  9. Roll Stack
    1. 2290 mm Sterling 3 roll vertical polishing stack with 3 x 400 mm rolls
    2. 3 individual drives via reduction gearbox and 2.2 kW DC motors with encoder speed feedback giving roll speeds up to 3.7 rpm up to 4.7 m/min
    3. Hydraulic ram top and bottom roll engagement with hydraulic power pack and accumulator
    4. Taper wedge bottom nip gap adjustment
    5. Rotary valves for roll heating/cooling
    6. Roll centre line motorised height adjustment
    7. Retract motor and gear box
    8. Stack mounted upon V groove wheels with rails
  10. Oil Temperature Controllers
    1. 3 off independent roll oil temperature controllers each with multi bank heaters, oil pump and water cooled heat exchangers, model HT40
  11. Cooling Conveyor
    1. Cooling conveyor
  12. Hauloff
    1. 2290 mm Sterling 2 roll hauloff with rubber covered roll
    2. Pneumatic ram roll engagement
    3. Bottom roll driven by 2.2 kW DC drive motor with encoder speed feedback via reduction gearbox
  13. Cooling Conveyor
    1. Cooling conveyor
  14. Cutter
    1. Heavy duty guillotine sheet cutter with motorised conveyor discharge