AMUT: Complete co-extrusion line
Apparecchiature Macchine Utensili, Italy, in co-operation with its partner company, AMUT, has recently tested a complete co-extrusion line for the production of HIPS/CRPS thermoplastic foils. This equipment is sized to enable a throughput of 800 Kg/h. The plant is complete with an efficient feeding, dosing and mixing system for raw materials. The single screw extruders belong to the lastest generation of AMUT equipment — 120 mm screw diameter 33 L/D for the main extruder and 60 mm screw diameter 28 L/D for the co-extruder — and are available complete with auxiliary fittings to produce excellent quality foil for further thermoforming of packages (0.180 – 2.5 mm thickness range in reels) and thick sheets suitable for industrial thermoforming of household appliance components (1.5 – 6 mm sheets, cut and automatically stacked). The line includes a 3-layer co-extrusion unit, with the added possibility of a fourth layer. The gauging/polishing calender main rolls are actuated by independent motors and cools the foil by means of a sized thermoregulation unit (independant circuits) granting the best conditions for a wide range of thickness and speed. The processing unit also includes: a coating system of protection film on one side of the sheet; lengthwise side trimming combined cut; and central cut in case of double foil web production.