Film extrusion line – cast mode

Film extrusion line – cast mode

MANUFACTURER Labtech Engineering
MODEL LF-400-COEX

General description:

When the line is in cast film mode, 5-layer films with a configuration of A-B-C-D-A can be produced using the four single-screw extruders. By incorporating the twin-screw extruder and using a different feedblock, it is possible to produce up to 9 layers with a configuration of A-B-C-D-E-D-C-B-A.

Characteristics :

  • Cast film line:
Characteristic Metric Value Imperial Value
Temperature range Ambient to 300°C Ambient to 572°F
Number of single screws 4 4
Number of twin screws 1 1
Total number layers 9 9
Layers configuration A-B-C-D-E-D-C-B-A
Die width 30.5 cm 12in
Die opening range 300 µm to 2.5mm 12 mils to 0.1 in
Die profile Coat hanger
Die opening control 12 push screw with flexible lip

 

  • Single screw extruders
Characteristic Metric Value Imperial Value
Approx. Max Output (LDPE) 12Kg/h 25lbs/h
L/D 30 30
Screws diameter 20mm 20mm
Flight count Single
Mixing elements Maddock+Pin

 

  • Twin screw extruder
Characteristic Metric Value Imperial Value
Diameter 16mm 0.63
L/D 40 40
Screw speed (RPM) 0 to 800
Motor Power 2.2kW 3hp
Max. extrusion output pressure 100 bar 1450 psi
Max. dynamic thrust bearing load 3.2 kN 719 lbs-force
Max. torque at 600RPM 2×18 Nm 2×13.3 ft-lbs
Specific Torque 9.22Nm/ 111 ft-lbs/
Outer and inner screw diameter (D/d) 1.73
Max barrel temp. (standard) 400°C 752°F
Approx. max. output (LDPE) 5 kg/h 11 lbs/h
Resin remaining on screw (LDPE) 15g 0.53 onces

 

  • Calander:
Characteristic Metric Value Imperial Value
Roll widths 350mm 13.8 in
Max film/sheet width 300 mm 11.8 in
Max sheet thickness 1.5mm 60 mils
Minimum film thickness in PE 10 microns 0.4 mil
Temperature range of the water tempering unit Max 140°C. Minimum 15 °C Max 284°F. Minimum 59 °F
Roll stack and nip rolls speed range 0 to 15 m/min 4.9 ft/min
Wind-up speed 0 to 100 RPM

To use this equipment

The equipment available is accessible to the academic and industrial research community.

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