PROCESS AND EQUIPMENT FOR THE PRODUCTION OF FILMS COEXTRUDED TWO OR MORE LAYERS OF WHICH ONE OF PVC.

摘要

Plastic material coming from two extruders (in the case of a two-layer material) or from a plurality of extruders (in the case of a multilayer material) passes through a single coextrusion head arranged with a vertical axis. An extruder supplies PVC. The coextruded material, of which one layer consists of PVC, then moves perpendicularly to a receiving device which is aligned perpendicularly and rotates continuously, intermittently or in an alternating manner.