Blown film extrusion line HEPTAFOlL®

for thermoplastics7-layerfor food film

7 Layer Co-Ex blown film lines meets a majority of the industry’s critical packaging development needs. 7 layer co-extruded blown film line is even used for complex packaging solutions with a maximum output of 1500 kg/hour and lay-flat width ranging from 1500mm to 4500 mm to produce both barrier films and non-barrier films. The range of applications include films for long shelf life packaging of edible oils, UHT milk, liquid and solid container liners and technical applications. Films for lidding, frozen food packaging, meat packaging and vacuum packaging are also produced on these lines. Both, symmetrical and asymmetrical films are produced with minimum curling incorporating a water-bath for annealing. The Heptafoil - 7 layer blown film extruders are offered with direct coupled motors, fluid temperature controllers for grooved feed section along with manual or hydraulic screen changer. 7 layer blown film line with CSD- Cylindrical Spiral Die (bottom fed vertical cylindrical spiral system) is state-of-the-art and provides optimized layout for rheological and thermodynamic criteria. Number of overlaps are almost unlimited, thus imparting excellent thickness distribution with broad range of operating parameters. Melt streams are designed and merged according to specific flow behaviour of polymers. It is compact in design with low axial forces. Sizes of all flow channels, all spiral dimensions and coex flow region are determined with the aid of computerized design and 3D simulation software. The die is self-cleaning. It is highly polished eliminating dead spots.