Amut collaborates with AMU to design a new type of coextrusion line

Recently, Amut and its sister company, AMU, have designed a new coextrusion line with a flat die and calender that can produce five-layer A-PET and PET-G sheets suitable for thermoforming food packaging and industrial packaging. material. There are three sets of extruders in this production line, with an output of 600 kg per hour. In three sets of extruders, two sets of main extruders and co-extruders (length-to-diameter ratio 28) used for extrusion of inner and outer layers and intermediate layers are respectively equipped with 70 mm and 60 mm screws, and the screws are specially designed. Suitable for processing the above polymers.

The use of slotted barrels in the feed zone maximizes the production efficiency of sheets with thicknesses of 0.18 μm to 1.15 μm. The melt is continuously filtered by a double platen screen changer. The melt is continuously fed into the die by an in-line gear pump and a static mixer to produce sheets with a net width of up to 1000 mm. The die head is equipped with an adjustable upper die lip. The internal geometry of the flow channel is specially designed according to the rheological properties of various types of PET sold on the market.