Blow Moulding Machine for Producing Plastic blowing mold Process for producing plastic containers, including an extrusion blow moulding machine, is disclosed. For example, in an extrusion blow molding process for plastic bottles, in which plastic tubing which has been extruded from an extruder head in a definable cycle is placed in the mold cavity of a blow molding tool arrangement, the inserted plastic tubing is inflated via an infeed blow mandrel by overpressure according to the mold cavity and is then removed from the mold. The production of plastic blowing mold, especially plastic bottles, for example from polyethylene or polypropylene, takes place in extrusion blow molding processes, especially in an extruded tube blowing process. In this connection a plastic tube is extruded from an extruder head, placed in the blow molding machine, inflated by overpressure via a blow mandrel, and cured by cooling. The extrusion blow molding machines used for this purpose generally have at least one extruder for supplying the plastic material. The output of the extruder is connected to the extruder head, and a tube which has been extruded in one or more layers emerges on its exit nozzle which can be adjusted preferably in opening width. The extruded tube is transferred to the blow molding tool and inflated within its cavity with the blow mandrel. The plastic tube can have one or more layers, it can be extruded as a tube with visible strips, decorative strips or, relative to the periphery, with several differently colored segments. The blow moulding machine has been explained using the example of a continuous extrusion blowing process and a correspondingly made device with a vertical arrangement of the extruder head, the blow molding tool arrangement and the blow mandrels. It goes without saying that the hardware components can also be arranged in a horizontal or any alignment according to the extrusion direction. The process as claimed in the invention can also be used in a discontinuous extrusion blowing process and accordingly a discontinuous extrusion blowing machine can also be produced.
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