BOPS CAST FILM PRODUCTION PLANT [ BIAXIALLY ORIENTED POLYSTYRENE] .
AMERICAN GIANT OEM,
DAVIS STANDARD/MARSHALL & WILLIAMS, Still Installed 14,000 Tons Per Year.
It is a clear, stiff, and lightweight plastic film used mainly for food packaging and display containers
Maximum film width 3,270mm , maximum thickness range 130-650 micron (5.1-25 mil). Fractioned film width range 270 to 1000 mm
Finished film max 3.3 m maximum 2.0 m (minimum Line output 1718 Kg/hr finished product estimate 8% edge trim.
Plant was new in 1999 and shut down March of 2018.
Main equipment installed in the plant is as follows:
8" 36/1 L/D Davis Standard single screw extruder, driven by 700HP motor with vented barrel and including continuous belt screen changer and Maag melt pump. Max output 4200 lb/hr.
60" wide EDI Auto flex, Fast gap die with restrictor bar and 6" deckling each side available.
64" Marshall & Williams three roll stack with 18" OD, individual driven rolls
64" Marshall & Williams MDO (Machine Direction Orientor) including its heat transfer system
Marshall & Williams TDO (Transversal Direction Orientor) with gas fired oven. Material inlet width 30-60", material outlet width 90"-140" 5-100 fpm slow side/15-300 fpm fast side.
Stretch ratio: MDO 1:1 - 3:1 TDO 1.5:1 - 4.6:1
Surface corona treating station
Approximately 130" wide coating station for application of silicon and anti-fog formula, dryer/heater.
Approximately 130" wide primary turret winder
130" John Dusenbery duplex slitter with AC motor driven individual, multi station rewind arms with centre/surface assisted rewinding. Maximum 40" OD rolls
Cumberland 18" x 36" edge trim granulator with nip roll feed. 60HP primary motor and blower discharge.
Roll packaging station, scale and labelling machine
MCC control system, speed and frequency variators, cooling towers and silos
Conair "Compu Dry" desiccant dryer
Silo storage farm and pneumatic conveying system.
All equipment still installed as operated. Previously used on general purpose styrene, high impact polystyrene and BOPS (Bi Oriented Polystyrene) in transparent, black, white, brown etc. colours