METHOD AND DEVICE FOR EXTRUSION-MOULDING OF A HOLLOW BODY MADE OF THERMOPLASTIC MATERIAL

摘要

The invention concerns a method and a device for extrusion-moulding of a hollow body made of thermoplastic material which consists in extruding a tubular preform, setting it via a robot arm (3) into a preforming device (6) which carries it into the lower part of a mould wherein the preform is blown to produce the hollow body. Some steps of the method can be performed in concurrent operation time. Said method and said device are suitable for producing hollow bodies with complex three-dimensional shape with high productivity level.