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Mitsubishi, BOPP Production Plant, 1999, 6300mm Width, 2000 kg/hr Capacity, 250 m/min

Description

  1. Overview
    1. Inventory number: E-3461
    2. Mitsubishi Heavy Industries BOPP production plant, year 1999
    3. Biaxial oriented polypropylene plant (BOPP)
    4. 6,300 mm width, 250 meters per minute
    5. Manufacturer: MHI, Mitsubishi Heavy Industries, Ltd
    6. Maximum output extruder capacity: 2,000 kg/hr
    7. Finished product rated capacity: 1,700 kg per hour
    8. Pictures available
  2. Process Description
    1. Biaxially oriented polypropylene (BOPP), plain or composite film with 2 or 3 layers in B/A/A, B/A/B, B/A/C configuration
    2. Resin to be used: for base layer – polypropylene homopolymer; for skin layer – ethylene-propylene copolymer
    3. Film thickness range: plain film 12 – 50 microns; composite film 15 – 40 microns
    4. Production capacity on mill roll basis, line capability: typical capacity of mill roll film shown as follows – 12 micron at 200 m/min produces 816 kg/h (5,712 ton/year), 15 micron at 250 m/min produces 1,275 kg/h (8,925 ton/year), 20 micron at 250 m/min produces 1,700 kg/h (11,900 ton/year), 30 micron at 166.6 m/min produces 1,700 kg/h (11,900 ton/year), 40 micron at 125 m/min produces 1,700 kg/h (11,900 ton/year), 50 micron at 76 m/min produces 1,292 kg/h (9,044 ton/year)
    5. Extruder output: main extruder max. approx. 2,000 kg/hr; satellite extruder max. approx. 180 kg/hr per set x 2 sets; max. total: 2,000 kg/hr
  3. General Specification
    1. Dimension of finished film: width max. 6,300 mm; thickness plain film 12 – 50 microns, composite film 15 – 40 microns
    2. Mill roll diameter: max. 1,200 mm
    3. Machine speed: before orientation max. 60 m/min; after orientation max. 260 m/min
    4. Draw ratio: longitudinal direction 1: 1 – 1: 7; transverse direction 1: 7 – 1: 10
    5. Operation side: film flows from left to right when standing at the operation side
    6. Dimension of BOPP line (net machine size): total length approx. 100 m; width approx. 13 m; height approx. 5.1 m
  4. Polymer Receiving Area
    1. Polypropylene virgin pellets, reclaim pellets, and master batch pellets are unloaded into the receiving hopper and transferred to their respective silos
    2. Main equipment: unloading hopper 1.5 cu. meter (1 set); rotary valve capacity 10 tons/hour (1 set); blower roots type, 30 kw (1 set); diverter valve air operated stainless cast iron (5 sets)
  5. Polymer Storing Area
    1. Raw materials are loaded and stored in their respective silos to ensure continuous supply of polypropylene resins
    2. Main equipment: storage silo for virgin pellet 50 cu. meter (2 sets); storage silo for reclaim pellet 50 cu. meter (2 sets); storage silo for master batch pellets 15 cu. meter (2 sets)
  6. Mixing Area
    1. Silos for virgin pellets, master batch pellets, and reclaim pellets are connected with pneumatic conveying tube; pellets are mixed in the tube during transportation
    2. Screw feeder and rotary feeder control the mixing ratio of different kinds of pellets; then they are dried by a hopper drier
    3. Main equipment: blower roots type 15 kw (1 set); rotary feeder capacity 3 tons/hr (2 sets), 0.6 tons/hr (2 sets), 0.5 tons/hr (2 sets); screw feeder capacity 0.5 tons/hr (2 sets); cushion chamber 100 liter (1 set); rotary valve 3 tons/hr (1 set); hopper drier 7 cu. meter (1 set); blower and heater heater 110 kw, motor 30 kw (1 set)
  7. Raw Material Feeding Area
    1. After drying by the hopper drier, pellet materials are mixed with fluffs coming from edge trim crushing and feeding equipment and then sent to the feeding hopper mounted above a main extruder
    2. Main equipment: blower roots type, 18.5 kw (1 set); rotary valve capacity 3 tons/hr (1 set); cushion chamber 45 liter (1 set); rotary valve capacity 3 tons/hr (1 set); feeding hopper with agitator 2.4 cu. meter, motor 7.5 kw (1 set)
  8. Edge Trim Crushing and Feeding Area
    1. Film edges are slitted by the trimmer and fed into the crusher through a conveying tube by a blower with suction filter
    2. The conveying blower feeds fluff granulated by the crusher into the agitator hopper
    3. Main equipment: blower turbo type, 15 kw (1 set); ejector stainless steel (1 set); crusher capacity 350 kg/hr (1 set); blower turbo type, 15 kw (1 set); cushion chamber 50 liter (1 set); rotary valve capacity 350 kg/hr (1 set)
  9. Auxiliary Raw Material Feeding Area
    1. Separate feeding system for the two satellite extruders
    2. Raw materials and master batch are blended by automatic blender then delivered to the feeding hopper of the satellite extruder by means of auto loader
    3. Raw materials without master batch are delivered to another satellite extruder by means of auto loader
    4. Main equipment: storage hopper capacity 1 cu. meter (2 sets); auto-loader vacuum suction type 200 kg/hr (2 sets); feeding hopper capacity 0.2 cu. meter (2 sets)
  10. Extrusion Area (Tandem Extruder)
    1. Extrusion area with tandem extruder configuration