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Bandera, BOPP Bi-Axial Film Extrusion and Stretching Line, 1984, 3200mm Max Width, 3-Layer, 720 kg/h Capacity

Description

  1. Overview
    1. Inventory number: E-832
    2. Bi-axial film extrusion and stretching line
    3. Year 1984
    4. Bi-axial material type: BOPP
    5. Film width (max): 3200 mm
    6. Layers: 3
    7. Output capacity: 75 kg/h
    8. Screw diameter: 60 mm
    9. Screw L/D ratio: 30:1-32:1 L/D
  2. General Specifications
    1. Output: 720-120-75 kg/hr
    2. Screw length: 30-32 L/D
    3. Screw diameter: 220-80-60 mm
    4. Nominal width: 3200 mm
    5. Nominal working speed at 25 my: 180 mpm
    6. Nominal stretching ratio: 5
    7. Slow section speed: 31 mpm
    8. Rewinder capacity for 25 my: 700 kg/h approx.
    9. Recycled edges on wound film: 34%
  3. Extrusion Section
    1. Loading system
    2. Melting extruder: 220 x 30 D Bandera
    3. Screw type: barrier
    4. Capacity: 720 kg/h
    5. Filter: candles, filtering surface 7500 cmq
    6. Satellite extruder "A": 80 x 32 D Bandera
    7. Screw type: barrier
    8. Capacity: 120 kg/h
    9. Filter: candles, filtering surface 2800 cmq
    10. Satellite extruder "B": 60 x 32 D Bandera
    11. Screw type: barrier
    12. Capacity: 75 kg/h
    13. Filter: drawers, filtering surface 78.5 cmq
  4. Extrusion Die
    1. Width: 585 mm
    2. Setting: manual
  5. Chill Roll
    1. Diameter: 2000 mm
    2. Expansion: 4.71 ml
    3. Tempering time: 9.12 sec
  6. MDO (Machine Direction Orientation)
    1. Large rolls diameter: 600 mm
    2. Small rolls diameter: 150 mm
    3. Number of rolls in the preheating section: 12
    4. Number of stretching rolls: 6
    5. Number of tempering rolls: 2
    6. Development of preheating rolls: 19 ml
    7. Development of tempering rolls: 3.17 ml
    8. Pre-heating time: 7.35 sec
    9. Stabilization time: 1.23 sec
  7. TDO (Transverse Direction Orientation)
    1. Pre-heating section length: 15 m
    2. Stretching section length: 9 m
    3. Tempering section length: 9 ml
    4. Neutral section length: 0.5 m
    5. Cooling section length: 3 m
    6. Pre-heating time: 5.8 sec
    7. Stretching time: 3.5 sec
    8. Stabilization time: 3.5 sec
    9. Cooling time: 1.2 sec
    10. Thermic exchange coefficient – preheating: 60 Watt/mq x °C
    11. Thermic exchange coefficient – stretching: 43 " "
    12. Thermic exchange coefficient – tempering: 43 " "
    13. Max. width: 3870 mm
    14. Max. throughput: 3450 mm
    15. Convergence: 10.85%
  8. Pull Roll Stand
    1. 3500 mm chrome plated rolls: 4
    2. Nip-roll 3500 mm: 3
    3. Stretching rolls: 1
    4. Mero electronic treatment: 1
    5. Esseci gas treatment – the only linear burner: 1
  9. Winder
    1. Stahlkontor Jagenberger-Kampf group: 1 (rewinds reels of 800 mm external diameter and 3200 mm width on 200 mm steel cores)
    2. Pick-up system to lift mother reels and pertinent runways: 1
    3. Stands for cores and mother reels located under pick-up system: 3
  10. Extruders Feeding and Dosing System
    1. Group of silos for main extruder feeding on load cells
    2. Group of small silos for satellite extruders feeding with volumetric conveyors dosing system
  11. Diathermic Oil Thermostatic Group
    1. Thermoregulation system and pumps for MDO and TDO: 11
    2. Feeding system from main station – 150 mc/h launching pump with – 270°C oil temperature and delta T = 40°C
    3. MDO thermic capacity: 250 kW (50-180°C)
    4. TDO thermic capacity: 595 kW (60-200°C)
    5. Installed electric power on extruders – die – melt pipes: 1600 kW
  12. Spare Parts
    1. 30 steel cores for mother reels
    2. Control console
    3. 3 chrome plated stretching rolls for MDO
    4. Almost 1/2 chain together with clips chain
    5. Approximately 150 guiding tracks for clip chain
    6. 2 rubbed nip rolls for MDO
    7. 2 rubbed nip rolls for chill-roll
    8. 1 chrome plated roll for gas treatment
    9. Some reducers – different sizes
    10. Some MDO-TDO drives and take up
    11. Drive and control electronic equipments
    12. Some pumps and thermoregulation valves for oil distribution at MDO-TDO
    13. Filters for polymer for main and satellite extruder
    14. Other small components