Bobst Rotoextruder 700F 1750mm Extrusion Coater Laminator

Bobst Rotoextruder 700F 1750/800 Extrusion Coating & Laminating Line

• — Process type: Extrusion coating and laminating line for BOPP and metallized BOPP
• — Web width & speed:
  • — Maximum web width: 1750 mm
  • — Minimum web width: 900 mm
  • — Maximum mechanical speed: 800 m/min
  • — Maximum operating speed: 750 m/min
• — Materials & products:
  • — Primary web: 12 – 25 micron BOPP
  • — Secondary web: 12 – 25 micron metallized BOPP
  • — Maximum laminate weight: up to 250 g/m²
  • — Resins processed: LDPE, PP, EVA, EAA
  • — Additional unwind for textile net/scrim
• — Unwinding:
  • — Two Bobst series 360 shaftless duplex automatic unwinders
  • — Maximum reel diameter: 1300 mm
  • — 6-inch self-expanding chucks
  • — Automatic high-speed flying splice
  • — Dancer-controlled web tension: 5 – 50 daN
• — Rotogravure coating & drying:
  • — Rotogravure coating station with Tresu-type enclosed chamber doctor blade
  • — Applies water-based primer ahead of drying tunnel
  • — Gas-fired drying tunnel
  • — Inlet section length: 1500 mm
  • — Three ventilation chambers: 2300 mm each (total 8400 mm)
  • — Dryer temperature rating: up to 120 °C
• — Chill drums & laminating station:
  • — Three water-cooled chill drums, diameter: 298 mm
  • — 3-roller extrusion laminating station
  • — Chrome-plated chill roll: 900 mm diameter, 1980 mm face width
  • — Rubber-covered pressure roller: 250 mm diameter
  • — Back-pressure roller: 350 mm diameter
  • — Teflon ring assembly
  • — Motorized edge trimming with trim suction
• — Coextrusion equipment:
  • — Reifenhäuser tandem coextrusion system
  • — Extruder 1: 120 mm, 30D, max 630 kg/h LDPE, 280 kW Siemens vector motor
  • — Extruder 2: 100 mm, 30D, max 470 kg/h LDPE, 186 kW drive
  • — Hydraulic screen changers on both extruders
  • — Cloeren VG 3-layer feedblock (ABA, with AAA and AAB selector plugs)
  • — Cloeren EBR IV AutoGauge V internally deckled coextrusion die
  • — Adjustable die slot width: 1100 – 2100 mm
  • — Computer-controlled lip adjustment
  • — Fully motorized extruder carriage
• — Rewinding:
  • — Shaftless duplex automatic rewinder
  • — Maximum reel diameter: 1300 mm
  • — Maximum reel weight: 2250 kg
  • — Automatic splice and cut-off at preset length
  • — Load-cell tension control: 7 – 70 daN
• — Auxiliary & treatment systems:
  • — Two BST underbase web guiding units
  • — NDC beta thickness measurement system with automatic profile control and auto die control
  • — Two Doteco four-component gravimetric blenders with resin conveying
  • — Corona treatment station: 18 kW
  • — Antistatic bar
  • — Platforms for reel loading and unloading
• — Controls & drives:
  • — Siemens S7 PLC with Cosmoline PRO supervision
  • — Siemens AC vector drives and motors
  • — Recipe management, datalogging, trend, and reporting functions
• — Electrical & utilities:
  • — Power supply: 415 V, 50 Hz
  • — Indicative absorbed drive power: approx. 800 kW
  • — Thermoregulation power: approx. 330 kW
  • — Dryer heating: direct natural gas