A Codd-neck bottle (more commonly known as a Codd bottle or a marble bottle) is a type of bottle used for Soft drink. It has a closing design based on a glass marble which is held against a rubber seal, which sits within a recess in the lip.
The bottle is pinched into a special shape to provide a chamber into which the marble is pushed to open the bottle. This prevents the marble from blocking the neck as the drink is poured. Some older examples had the bullet shape of soda bottles.
The bottles were regularly produced for many decades, but gradually declined in usage after the introduction of the steel crown cork bottlecap. Since children smashed the bottles to retrieve the marbles, vintage bottles are relatively scarce and have become , particularly in the UK. Bilas, a company in Portugal, created a drink named after the bottle design (Pirulito). However, the marble inside did not seal the liquid; instead it was a normal cap which could be removed without breaking the bottle.
Codd bottles are still used for the Japanese soft drink Ramune and the Indian drink Banta.
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