Blown film extrusion is a widely used process for manufacturing thin plastic films with diverse applications in packaging and industrial use. The process begins with melting the biopolymer resin in an extruder, where it is pushed through a circular die to form a continuous tube. As the material exits the die, compressed air inflates the tube, controlling film thickness and width. Simultaneously, a cooling system stabilizes the film before it passes through nip rollers that collapse the bubble into a flat sheet. The film is then slit, wound onto rolls, or processed into specific formats.