| 摘要 |
The invention relates to a method for producing tubular containers (23) with an open filling opening (3) and with an end that is provided with a seal. The inventive method comprises the following steps: separately producing a preform (1) with a neck (4) with definitive dimensions and a tubular body (2) with smaller dimensions than the definitive form, said tubular body containing the open filling opening (3); fixing the preform (1) that is produced to a drawing head (9b) by its neck (4) and subjecting it to at least one partial heating process; introducing the heated preform (1) that is attached to the drawing head into the inside of a multi-part closed blow mould (16a, 16b) in such a way that the open filling opening (3) is air-tightly held at the lower end of the blow mould (16a, 16b); fitting a blow nozzle (17) to the filling opening (3) of the preform (1) in a sealed manner, from the outside, in such a way that the end is held tightly between the blow mould and the blow nozzle with the flange (6); axially drawing the preform (1) by means of the drawing head (9b) into the end position of said drawing head, in which it forms part of the blow mould (16a, 16b), by supplying blowing air to the inside of the preform (1) in order to expand the same; hardening the drawn and blown container, which rests against the wall of the blow mould (16a, 16b) and has its final dimensions, while maintaining a predetermined internal pressure inside the container; reducing the internal pressure to atmospheric pressure; opening the blow mould and removing the finished container using the drawing head and cutting down the container and removing it from the drawing head.
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