How do bottling companies insert champagne corks into the bottles when they make them?

Question

How do bottling companies insert champagne corks into the bottles when they make them?

In: Engineering

Answer 1

The cork on a champagne bottle is pretty much the same as a wine cork.
When inserting the champagne cork we do not insert it all the way, leaving about 1/4 of the cork sticking out of the top.

After corking we add the cage to hold the cork in while the wine referments in the bottle. The refermentation is what adds the bubbles (yeast eat sugar and release alcohol and carbon dioxide) and the pressure (carbon dioxide) mushrooms the head of the cork as the pressure is trying to push the cork out of the bottle.