Verfahren und Vorrichtung zur Herstellung von tubenartigen Körpern

摘要

The invention relates to a method and a device for producing tube-type bodies. An injection-molded preform produced from a thermoplastic material is biaxial orientation-molded in a blow mold to give a container. Molding is carried out by stretching and by adding a pressurized blowing gas. Stretching is carried out using a stretching rod that is introduced into the interior of the preform and pushes against a closed portion of the mouth section. The container is removed from the blow mold as an intermediate product and an end portion of the container facing away from the mouth section is cut off. In a final step, the edges of the cut are pressed and welded together. The tubular container can optionally be closed prior to or after filling.