- Polymers: PP-Homo, PP-Copo - Film thickness range: 18 - 250 µm - Range of final endfilm width: 1800 - 4500 mm - Mechanical speed: up to 350 m/min - Line configuration:
a. Raw material handling - Feed system: Individual pneumatic hopper loaders - Gravimetric dosing: Up to 6 components per extruder - Extruder output control: Integrated in SML control system
b. Extrusion - Extruder diameters: 30 / 45 / 60 / 75 / 90 / 105 / 120 / 135 / 150 / 180 mm - L/D ratio: 28 or 33 - Melt filtration: Continuous melt filtration with SML screen belt filter or hydraulic - screen changers - Melt pumps: Available on request - Co extrusion structures: 3 or 5 layers - Extrusion die: With automatic cross profile control
c. Casting and downstream equipment - Primary chill roll: Dia. 800 or 1000 mm, matt chill roll surface - Secondary chill roll: Dia. 400 mm, chromium-plated surface - Chill roll width: 2300 / 2500 / 2700 / 2900 / 3200 / 3500 / 3800 / 4100 / 4400 / 4700 / 5000 mm - Web pinning: By combination of vacuum box, softbox or airknife and electrostatic or pneumatic edge pinning - Gauging system: Beta-ray gauging system - Corona treatment: One-side, two-side, or alternating-side treatment
d. Edge trimming and recovery - Trimming station: Inline edge and bleed trimming with blades - Suction system: Edge and bleed trims are sucked off independently - Scrap reprocessing: Direct refeed by vertical scraptruder or repelletizing on inline recycling extruder
e. Winding Basic concept: SML series 2000 winders - Cross cutting system: Full width with guillotine - New roll startup: Without core preparation using belt cage - Core specification: Cardboard or plastic core 3" or 6" inner diameter - Outside roll diameter: operating full width up to 1000 mm on 6" core possible - Part bobbins: Inline part bobbin slitting possible - Shaft and roll handling: Optionally available
Basic concept: SML series 1100 winders - Cross cutting system: Full width with guillotine - New roll startup: Without core preparation using electrostatic - Core specification: Cardboard or plastic core 3" or 6" inner diameter - Outside roll diameter: Operating full width up to 1000 mm on 6" core possible - Part bobbins: Inline part bobbin slitting possible - Shaft and roll handling: Optionally available
Basic concept: SML series 1200 winders - Cross cutting system: Full width with flying knife - New roll startup: Core preparation necessary - Core specification: Shaft less with steel core 8" inner diameter - Outside roll diameter: Operating full width up to 1300 mm on 8" core possible - Part bobbins: Mother rolls
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