PP Film Extrusion Pilot Line Laminated with CPP & Aluminum Film

PP Film Extrusion Pilot Line   Laminated with CPP & Aluminum Film

Machine working process

1. Material plasticization and melting: First, the raw materials to be processed (such as plastic particles, resin, etc.) are added to the hopper of the precision single screw extruder. Under the rotation and propulsion of the screw, the material is subjected to strong shear and friction, and gradually plasticizes and melts into a uniform melt.

2. Filtration and metering: The melted material passes through the filter to remove impurities and unmelted particles to ensure the purity and uniformity of the melt. Subsequently, the melt metering pump accurately measures the melt to ensure that the amount of melt output per unit time is stable and controllable.

3. Cast molding: The measured melt is fed into a special die, and through the precise design of the die, the melt is evenly coated on the continuously conveyed substrate (such as paper, film, etc.). In this process, the melt forms a homogeneous film between the die and the substrate.

4. Lamination and drying: The base coated with the melt then enters the cast composite molding machine and is compounded with another layer of substrate (or multiple substrates). During the compounding process, the composite material is heated and dried by a glue applicator dryer to solidify the melt and tightly bind the substrate.

5. Rewinding and unwinding and testing: After the composite material is cooled, the rewinding and unwinding operation is carried out by the rewinding and unwinding system. At the same time, the thickness gauge monitors the thickness of the composite material in real time to ensure the stability of product quality. The defect detection system is used to detect defects and defects on the surface of composite materials, and to detect and deal with problems in time.

6. Control and management: The working process of the whole equipment is precisely controlled and managed by the control system. The control system coordinates and controls each component according to the preset parameters and process requirements to ensure the stable operation of the equipment and the excellent quality of the products.

product details

cast film composite line