Italy developed barrier film co-extrusion equipment

Recently, the Italian company Bandera has demonstrated to the public its co-extrusion equipment for the production of high-performance multi-layer barrier films. The processed film has good flexibility. The equipment consists of 5 extruders, of which 2 TR75AFs extruders are used to produce the outer layer, 2 TR35 extruders are used for the adhesive layer, and 1 TR65AFS extruder is used for the barrier layer. The TR75AFS screw design is suitable for general purpose resins such as LDPE, LLDPE, HDPE, metallocene polymers and ionic polymers. The thickness of the barrier material (EVOH or nylon) can be controlled to 0.02-0.03 mm, and the maximum width of the produced film is 1600 mm. The key to the production of high-performance films is the use of multi-component mass feeders and the precise control of the feed rate of each extruder, and the use of advanced monitoring systems to ensure the optimal combination of feed quantities of various raw materials and to monitor the thickness of each film. The extruder is also equipped with a loop temperature control system. The company also relies on melt flow analysis and simulation software to design the head, so the material residence time is short, the head pressure is small, the cost is saved, and the film thickness accuracy can reach 0.003mm.