1. Introduction
POTOP® PFC(III)-30/320 mini precision 3 layer co-extrusion film casting line is an precision extrusion and compounding inside the die based 3 layer casting instrument. Without any organic solvent and adhesive, we can laminate two kinds of films with different materials, in the end obtaining the functional film, which combine the excellent properties of the two materials together.
This set up compose of 3 mini precision single screw extruder, 3 layer casting die, casting auxiliary and PLC based intelligent control system, which endows a wide processing range (including speed, temperature, pressure and thickness) and real time parameter collecting, displaying and recording function.
2. Specifications and parameters
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Item
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Content
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Parameters
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Overall performance
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Available materials
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PE/PP/PS/EVA and its composites
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Film structure
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A/B/C or A/B/A
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Screw diameter
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30 mm
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Max. screw speed
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120 rpm
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L/D
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30:1
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Motor power
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5.5 kW
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Production specification
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0.01-0.1 mm
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Max. linear velocity
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15 m/min
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Max. throughput
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30 kg/h
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Max. operating temperature
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350 ℃
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Temperature control precision
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±1 ℃
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Operating voltage
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3 phase AC 380V±10%, 50 Hz
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Total power
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ca 52 kW
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Control mode
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Siemens PLC
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L×W×H
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3559 mm×3485 mm×2019 mm
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3. Configurations and parameters
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1.Extruder
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Item
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Parameter
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Remarks
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Main motor
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5.5 kW
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Nord variable frequency motor
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Reduction box
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I=15
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Nord reduction box
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Screw
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Diameter: Φ30 mm
L/D: 30:1
Structure: Maillefer screw
Screw arris hardness: HRC 50-56
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Barrel
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High quality alloy steel(38CrMOALA),centrifugal cast tungsten carbide in the inner bore with the thickness of 1.5-2 mm.
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Barrel heater
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Cast aluminum
4×2 kW=8 kW
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Barrel cooling
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Air blower cooling
Blower power: 60W
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Frame
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Euro aluminum alloy section, interlock trundle and shock proof foot
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2.Prcessing unit
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Item
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Parameter
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Remark
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Distributor and tube
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High precision build-in
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Screen change
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Manual plate screen change
Material: W6Mo5Cr4V2
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Measuring pump
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3 cc
Motor power: 0.75 kW, Speed: 0-60 rpm
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Manual die
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Die effective. with: 320 mm
Die lip thickness range: 0.8mm
Die lip adjust mode: upper die lip manual all push elastic fine turning
Runner: hanger runner
Material: 5CrNiMo alloy steel
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3. Casting auxiliary
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Casting roll
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Φ300mm, width 350 mm
Chrome coated and mirror polished roll surface with the surface roughness of Ra 0.01µm, equipped with swivel joint, flexible metal tube. Double helix makes the surface temperature difference within ±1℃, surface hardness of HRC55～58.
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Casting roll motor
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Servo motor with the power of 750 W
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Schneider
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Peel rubber roll
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Φ60 mm, width 350mm
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PU
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Haul-off steel roll
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Φ80 mm, width 350 mm
Chrome coated and mirror polished roll surface with the surface roughness of Ra 0.01µm and hardness of HRC55-58.
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Haul-off steel roll motor
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Servo motor with the power of 750 W
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Schneider
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Haul-off rubber roll
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Φ60mm, width 350 mm
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PU
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Idle roll
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Φ30mm, width 350 mm
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Aluminum alloy with harden surface
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Flattened roll
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Φ100mm, width 350 mm
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Aluminum alloy with harden surface
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Casting roll linear velocity
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0.5-15m/min steeples speed regulating
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Haul-off roll linear velocity
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0.5-15m/min steeples speed regulating
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Air knife
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Stainless steel air knife with the effective opening length of 200 mm and the thickness of 0.3-0.8 mm
High pressure air blower: 750 W and max. blowing rate of
2.4 m3/min
Max. pressure: 16 kPa
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Trimming device
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Art knife
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Script winder
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Paper tube
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Script winder motor
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Torque motor: 200 W
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Winder
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3 inch inflatable shaft
Max. winder diameter Φ250 mm
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Winder motor
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Servo motor with the power of 400 W
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Schneider
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Frame
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Euro aluminum alloy section, Interlock trundle and shock proof foot
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4. Measurement and control system
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Item
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Specification
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Remarks
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Control system
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PLC and touch screen based control system makes the self-adaption barrel temperature control, process parameter display and operating warning available, enhancing the flexibility and improving the humanization intelligentization and safety.
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Siemens
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Operating display screen
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7 inch touch screen offers the intuitional display of temperature-time, pressure-time curve of the die, along with failure diagnose.
Emergency stop switch is also mounted beside the screen.
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Siemens
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Speed control
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The motors of the extruder, casting roll and haul-off roll are reliable servo motors within a large speed adjusting scope. The synchronization function is also available.
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Siemens
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Melt temperature and pressure measurement
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Melt pressure: 0-50 MPa
Melt temperature: 0-400 ℃
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USA DYNISCO
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Low voltage appliance
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Overpass CE authentication
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French Schneider
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5. Selective configurations
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Item
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Parameter
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Remarks
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Tension control system
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ATB-XR100/150
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Discharge device
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High frequency AC corona discharge with adjustable angle
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Mould temperature controller
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Max. temperature: 200℃
Heating power: 9 kW
Pumping power: 0.75 kW
Max. pumping rate: 42 L/min
Max. pumping pressure: 5bar
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Water chiller
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Temperature: 5~30 ℃
Refrigerating throughput: 15000 kCAL
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