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Macchi, 5-Layers, 2021, 1500mm Width, 5-Layer Blown Film Line, 220-250 kg/h Capacity

Macchi, 5-Layers, 2021, 1500mm Width, 5-Layer Blown Film Line, 220-250 kg/h Capacity

Description

  1. Overview
    1. Macchi model 5-layers blown film line
    2. Width 1500 mm
    3. Year 2021
    4. Kind of production: tubing and sheeting
    5. Materials that can be processed (ref. to material table): LDPE, LLDPE, bio resin, G-polymers in central layer "C"
    6. Die diameter and gap (gap measured in cold conditions): 250 mm; 1.5 mm
    7. Film thickness min. and max: 15-150 micron - without gussets
    8. Film width min. and max: max. = 1500 mm
    9. Layers distribution: A: 25-35% B: 10-15% C: 10% D: 10-15% E: 25-35%
    10. Screw speed of the extruder RPM: 0-170 RPM for all the extruders
    11. Reference materials and MFI LDPE: 0.7/0.3
    12. Production capacity (with cooling air temperature 10°C): 220/250 kg/h
    13. The above data depend on the type of material and working conditions and are related to material structure, width, thicknesses that must be all achievable and compatible (see technical requirement page)
    14. In case the acceptance test sheet of page 4 herewith is not filled, Macchi consider the above specification valid for positive final line test and acceptance
    15. Mechanical speed of the winders: from 7 to 110 m/min
    16. Maximum width of film passage on the winders: 1500 mm
    17. Maximum diameter of the reel actual reel: diameter depends upon shafts load rating and winding pattern. Max. reel 0: 950 mm - BO basic
    18. Minimum core thickness: 4 mm
    19. Cardboard cores for reel: 76 mm / 152 mm
    20. Total height of the line: 10 m
    21. Electric power: 400 volt 3phase + neutral - 50 Hz
    22. Installed power: 360 kW (approx.)
    23. Cooling water consumption (water supply at customer charge): negligible - closed loop circuit
    24. Compressed air pressure and requested volume: 6 bar; 60 Nm3/h (with 250-300 it. tank)
    25. The modifications of these technical details have to be agreed with Macchi S.p.A and modification of the machine performances or price modification can be involved
  2. Extruder Specifications
    1. Nr. 3 12000000 Plastex® extruder - Ø 45/30 D - AC motor kW 30 - direct drive
    2. Horizontal extruder, with low screw centerline design, assembled on wheels to compensate the thermal elongation
    3. Equipped with modular heavy duty ceramic heating elements and forced-air cooling unit and complete with removable fairing
    4. The machine includes: alternating current motor coupled via cover plate and flexible coupling - ABB/Siemens air cooled
    5. Oil lubricated gearbox, with over-sized thrust bearing and built-in heat exchanger for oil cooling
    6. Water-cooled feed zone with geometry of the feed-bore designed to match the applied screw geometry and processed resins. Water temperature independent valve, controlled via the line PLC
    7. Alloy bimetallic barrel with high resistance to wear and corrosion
    8. Barrier profile extrusion screw made of stainless steel CrMoV, with nitride surface and alloy WR3 armoured flight with high resistance to wear and corrosion
    9. Technical features: screw diameter 45 mm, L/D ratio 30:1, screw speed 170 RPM, motor power 30 kW at 1500 RPM, nr. heating zones 3, heating power 8 kW, total installed power 39 kW
    10. Nr. 2 12001000 Plastex® extruder - Ø 55/30 D - AC motor kW 61 - direct drive
    11. Horizontal extruder, with low screw centerline design, assembled on wheels to compensate the thermal elongation
    12. Equipped with modular heavy duty ceramic heating elements and forced-air cooling unit and complete with removable fairing
    13. The machine includes: alternating current motor coupled via cover plate and flexible coupling - ABB/Siemens air cooled
    14. Oil lubricated gearbox, with over-sized thrust bearing and built-in heat exchanger for oil cooling
    15. Water-cooled feed zone with geometry of the feed-bore designed to match the applied screw geometry and processed resins. Water temperature independent valve, controlled via the line PLC
    16. Alloy bimetallic barrel with high resistance to wear and corrosion
    17. Barrier profile extrusion screw made of stainless steel CrMoV, with nitride surface and alloy WR3 armoured flight with high resistance to wear and corrosion
    18. Technical features: screw diameter 55 mm, L/D ratio 30:1, screw speed 170 RPM, motor power 61 kW at 1500 RPM, nr. heating zones 3, heating power 11 kW, total installed power 73 kW
  3. Screen Changers
    1. Nr. 3 13005000 hydraulic screen changer - Ø 45
    2. Hydraulic screen changer bolted directly onto the extruder terminal flange equipped with a self activating sealing system that allows a safe and leak proof use with high working pressure
    3. The system includes: melt pressure measure instrument mounted in input to the screen changer
    4. Nr. 1 heating zone with sensor and temperature regulation system
    5. Nr. 2 13006000 hydraulic screen changer - Ø 55
    6. Hydraulic screen changer bolted directly onto the extruder terminal flange equipped with a self activating sealing system that allows a safe and leak proof use with high working pressure
    7. The system includes: melt pressure measure instrument mounted in input to the screen changer
    8. Nr. 1 heating zone with sensor and temperature regulation system
  4. Coextrusion Die Head
    1. Nr. 1 14063000 5 layers coextrusion die head with IBC
    2. Lateral feeding 5 layers coextrusion die - model TE551
    3. Designed with innovative flow distribution software in order to achieve excellent thickness tolerances with the maximum flexibility in the use of different polymers
    4. Layers symmetrical geometry allows the uniformity of the material flows in the confluence region providing the perfect distribution of the thickness of each layer and conferring to the film superior optical and mechanical properties
    5. A lower volume of polymers inside the die enables quicker changes and shorter materials residence time
    6. Made out of high-grade forged steel hardened with nickel plated surface treatment spiral mandrel
    7. Adjustable centering die lips are chrome plated in order to improve polymers slipperiness and enhance abrasion resistance
    8. The die is mounted on an adjustable cart with integrated cooling air distributor manifold
    9. Thermoregulations divided into zones heated by ceramic elements
    10. High-efficiency internal bubble cooling system with isolated and low pressure drop cooling air passages
    11. Die insert range Ø 200/300
    12. Installed die Ø 250 mm - die gap 1.5 mm