Method and device for producing a container filled with filling medium

A device for producing a container filled with a liquid product, said device comprising:

• a heating device for thermal conditioning a preform made of a thermoplastic material;
• and
• a blowing device for shaping the thermally conditioned preform to form the container;
• wherein the blowing device comprises a blowing mold for receiving the preform, a stretching rod for stretching the preform received in the blowing mold, and supply means for introducing a blowing gas and the liquid product into an inner hollow space of the preform received in the blowing mold,
• wherein the supply means comprises a first supply line configured to supply the blowing gas into the preform in a pre-blowing phase, and a second supply line configured to supply the liquid product into the preform in a main blowing phase,
• wherein the device further comprises a mixing device connected in a flow-conducting manner to the first supply line for mixing different gases from at least two different gas sources together as the blowing gas,
• wherein one of the at least to different gases is carbon dioxide, and
• wherein the device is configured to cause at least a part of the carbon dioxide in the blowing gas to separate out of the blowing gas and to carbonate the liquid product in container at a conclusion of the main blowing phase.