This is one of the last steps in the long journey from grapes to wine. After the wine has been filtered it is now clear and ready to be bottled.
Fortunately this process is mostly automated. First the bottles are cleaned by the machine. Afterwards they are filled with wine and corked up. A second machine is responsible for cleaning the outside of the bottle, sealing the bottle neck and labelling.
Once in the bottle, the wine can age there for years or even decades, depending on the grape variety and quality. On the other hand, some wines taste best when drunk young, because the pronounced fruit flavours come to the fore most clearly in the first few years.
Check out the short video below to get an impression the process.