SML TYPE: CC/135,60,60/2700/600

TECHNICAL DATA:

Extruder "A" Output max.  LLDPE          135/33 L/D  950 kg/h

Extruder "B" Output max VLDPE            60/28 L/D   200 kg/h

Extruder "C" Output max. LLDPE           60/28 L/D 200 kg/h

Raw materials:

LLDPE      MFI       2 - 5 g/10min

VLDPE     MFI        2 - 5 g/10min

Coex Structure 3 layer

Film thickness range for stretch wrap film   11 - 45 μm
Final film width 4 x 500 mm // 8 x 250 mm // 2 x 750mm + 1 x 500mm // 2 x 750 mm + 2 x 250mm

• Flat die lip width:  2.550 mm
• Roller width:        2.700 mm
• Chill roll C1 Ø:     1.000 mm
• Chill roll C2 Ø:     400 mm
• Mechanical speed max: 600 m/min
• Installed electrical power for one line approx:1.022 kW
• Utilisation factor approx: 40 - 50 % of total value
• Necessary cooling capacity: approx. 492 kW
                                           approx. 422.882 kcal/h
  Compressed air consumption: approx: 60 Nm /h

THEORETICAL OUTPUT CALCULATION

                                stretch wrap film

Thickness (weight): 23 μm
net film width: 4 x 500 mm
speed: 400  m/min                                                                             
net output / hour:1.016 kg/h                                   
net output / year :7.315 tons/7.200h

MATERIAL FEEDING AND DOSING
Manufactured by DOTECO

MATERIAL FEEDING AND DOSING "A"

1 Material feeding / main component
3 Material feeding / additional component

MATERIAL FEEDING AND DOSING "B" & “C”
1 Material feeding / main component
2 Material feeding / additional component

PLATFORMS

 1 Dosing platform Extr. "A" 10 m
All dosing units are mounted on this platform.
Additional platform above extruders. incl. gratings and stairs or ladder, handrails.

2 Extruder platform
Extruder arrangement on solid steel platform,
covered with aluminium-sheets, complete with stairs and handrails.

EXTRUSION UNIT "A"

1 SML Single-Screw Extruder SML-EH-135/33
Drive / Transmission / Barrel base/bush / Barrel/Screw / Base frame

 EXTRUSION UNIT "B & C"

1 SML Single-Screw Extruder SML-EH-60/28
Drive / Transmission / Barrel base/bush / Barrel/Screw / Base frame

 TOOL UNIT "A"
Tool unit - hydraulic screen changer KR-hyd/150

TOOL UNIT "B & C"
1 Tool unit - hydraulic screen changer KR-hyd/60

FEEDBLOCK & FLAT DIE manufactured by CLOEREN
3-layer feedblock FG II (fixed geometry)
1 Automatic flat die - H 2.550 mm
- 100 thermo die bolts (distance 25,4 mm)
1 Internal, adjustable Deckle System IDS II Cloeren
1 Die splitting system
1 Frame tool unit
1 BIVAC (Bi - vacuum) box 2.550 mm Dual chamber vacuum box

COOLING AND TAKE OFF UNIT
1 Electrostatic edge pinning device
1 Pneumatic edge pinning device
1 Casting section 1000/400 SML-CS/650/2700
Cooling rollers
- Cooling roller C1 with matt surface - chemically treated , Ø 1000 mm
- Cooling roller C2 hard chromium platted surface, Ø 400 mm
- double edge cooling device
Plate out roll and idler rolls
- Nip roll on Chill roll C2

THICKNESS MEASURING UNIT Manufactured by ELECTRONIC SYSTEM

1 Thickness measuring unit for automatic dies.
Contact-free measurement of total basics weight in g/m²
by radioactive source and beta transmission sensor,
including automatic die bolt control,
consisting of:
- Beta source (Kr85 - 1000 mCi) and sensor placed on traversing frame
- computer cabinet, touch screen monitor and software.
- Base frame with guide rollers

EDGE TRIM AND REMOVAL
1 Antistatic pipe
1 Power supply unit for antistatic pipes
1 Recovery system for stretch-wrap-film
1 Additional injector for additional bleed trims

WINDING UNIT
1 Cast Film Winder Series 2000 W2000/Stretch Wrap/2200/3"/600
Technical data:
max. end film width 2150 mm
width of rollers in cutter stand 2400 mm
width of contact-roller 2200 mm
max. mechanic. winding diameter:
3" core and part bobbins 500 mm
winding tension 10 - 100 N/m
contact pressure 50 - 900 N

Cast Film Winder Series 2000 STRETCH WRAP
high speed horizontal sliding winder suitable for 3" air-shafts,
central winding with contact mode
winder consisting of the following parts:

Cutter stand
- guiding roller on top of cutter stand of winder, film entering winder overhead
- driven banana roller to spread web, in order to prevent wrinkles prior to in-line trimming
- in-line trimming station for edge trimming and optional bleed trimming
- edge trim razor blade holders have two blade positions to allow blade changing during production
- linear guide and scale for easy adjustment of final web width
- 3 roller cutting station with 2 AC drives

Main frame
- fix point roller duo with two individually AC servo driven rollers
- highly dynamic ultra light CFP dancer roller for precise adjustment of winding tension,
bobbin is controlled in speed control mode
- entrance angle optimization
- contact roller and adjustable satellite roller controlling air entrapment between layers of film
which in return influence the hardness of the finished bobbin
- ultra light CFP contact roller for highly dynamic and sensitive adjustment of lay on pressure
- movement of both, the satellite and lifting of the satellite and contact roller unit is done
by AC servo positioning drive
- 2 winding stations with central drive for contact winding mode,
each winding station consists of a chuck head and a corresponding clamping device,
which are moved exactly in same position along double linear bearings on opposite walls.
- the winding stations can move independently from each other and thus can approach each
other closely, there is no free web length at the roll change
- chuck heads and clamping stations are positioned by 4 AC servo
positioning drives with resolver and feedback control
- electronic system for suppressing critical speed of winding shaft
- side walls are 400 mm thick and filled with vibration absorbent polymer concrete,
anchoring rods within the concrete transfer vibrations to the sidewall foundation body
- pneumatically operated, full width crosscutting device with rectangular cut,
Winding shafts
- winding shafts are inflated / deflated automatically
- 3 inflatable 3"-winding shafts are included
Shaft handling system
Complete shaft handling system
Visualisation
15 inch VGA color TFT display with Touchscreen
IP 65 protection class front cover
- memory for 255 recipes
- alarm management system

PLC and Software
- 10 taper curves to be defined individually

 AUTOMATIC CONTROL SYSTEM
1 Automatic control system SML-CS B&R System 2000
HARDWARE
PLC: B&R system
* HMI: IPC 5000, TOUCH-SCREEN, 15" TFT Display,
visualization SCADA tool GENESIS, based on MS Windows NT
* 2 operation station (extrusion and winder)
* direct connection PLC extrusion - PLC winder

SOFTWARE
Working hour meter
* Temperature control and monitoring
* integrated calculator to preset operating conditions
* Automatic line speed-up and speed-down
* Line drives controlled via CAN-Bus
* Start-up mode: heat-up of line automatically acc. to preset timer
* Shut-down mode: cooling-down of line automatically
* exchange of main screen pictures of extrusion and winder
* Trend graphic (up to 8 graphs under one set-up)
* general line protocol
* Hardcopies of all screens and reports possible and storable on diskette
* Checking of input ranges for setting values with help-system
* History alarming system
* 3 machine operating modes: HAND - AUTOMATIC - REVISION

HP-Trafo for treatment of plastic  Manufactured by VETAPHONE

• Corona-Plus generator, model CP5-16kW MKII
• HP 500 Transformator, incl. oil
• Corona-Plus station, model VE1E-B(PF9)2720 PN
• Corona-Plus station, incl. Quick Change cassette
• Ventilator for ozone extraction, model DG90

  STANDARD UTILITY SPECIFICATIONS FOR SML MACHINERY
  ELECTRICAL POWER SUPPLY

  SML standard network
  Mains input   voltage 3 x 400/230 Volt
  fluctuation max. + 5 / - 10 %
  frequency 50 Hz
  fluctuation max. + 2 / - 2 %