Stretch blow moulding machine and method

摘要

A stretch blow molding machine and method are provided for forming a container. A preform is expanded to a first configuration in a blow mold of a stretch blow molding machine. A stretching rod element is introduced to the blow mold to expand the preform from the first configuration to a second configuration. The stretching rod element moves axially in the blow mold in a stretching direction. The plastic perform is temporarily coupled to the stretching rod element during at least a period of time of the expansion of the preform from the first configuration to the second configuration for influencing a behavior of the perform during the expansion.

主权项

1. A method of forming a container, comprising:
expanding a preform to a first configuration in a blow mould of a stretch blow moulding machine; introducing a stretching rod element to the blow mould to stretch and expand the preform from the first configuration to a second configuration; and moving the stretching rod element axially in the blow mould in a stretching direction, wherein the plastic preform is temporarily coupled to the stretching rod element during at least a period of time of the expansion of the preform from the first configuration to the second configuration for influencing a behavior of the preform during the expansion, and wherein a tip region of a material region of the preform opposite a mouthpiece region of the preform is drawn by the stretching rod element during the stretching of the preform, wherein the stretching rod element comprises a hollow rod body, and wherein the tip region of the preform is drawn by a vacuum in the hollow rod body of the stretching rod element during stretching of the preform.