Windmoller & Holscher Optimex Blown Film Extrusion Line

Number of layers: 3
Film structure: ABC
Material: LDPE, LLDPE
Film width: 2200mm

Extruder 1 layer: A
Screw diameter 1: 70.30D, outer layer
Description 1: screw speed upto 180rpm

Extruder 2 layer: B
Screw diameter 2: 90.30D, core layer
Description 2: screw speed upto 140rpm

Extruder 3 layer: C
Screw diameter 3: 70.30D, inner layer
Description 3: screw speed upto 180rpm

Head: blown film die head for 3 layer film 315/500 3 P2K
Die diameter: 500mm
Thickness control: Module G3, gravimetric dosing and throughput control for 3 extruders, Inoex
Bubble cage: film sizing and stabilizing cage with coated CFRP rollers
Working width: 550-2200mm
Precise calibration of the film bubble through accurate adjustment equipment
Motorized central tube diameter adjustment and height adjustment
Ultrasonic bubble control for highly dynamic direct blower control without mechanical control elements
Web break sensor, shut down of extruders immediately after web break is detected

Corona treatment: L for two sided treatment of the collapsed tubular film
Working width: maximum 2200mm
Power output: maximum 12k
Dose: 26.09wmin/ma² at v=100m/min
5mm segmental electrodes allowing skipping of treatment in web flow direction
Ozone extraction including pipes between the treatment station and the extractor fan

Web guide: E+L for a working width of 2200mm
Ultrasonic sensors: x 2
Electronic sensing system
Rotating frame
Rewind: double back to back
Rewind maximum reel diameter: 1200mm
Rewind: maximum reel width 2200mm
Maximum weight: 2500kg

Extruder combination mainly comprises:
Direct drive with maintenance free AC motors and thermally very stable
and water cooled frequency inverters grooved bush temperature controller for homogenizing
of the feed rate depending on the raw materials, including central water temperature control unit
Low temperature barrier screw, LT
Screw length: 30D
Homogeneous melt quality screw and feed barrel in long lasting
Low wear material combination operation and data display provided at the operator station
Procontrol line speed maximum: 150m/min
Screen changer fans for film cooling magnet separator for the extruder combination 70/90/70.30D