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A bottle is a small container with a neck that is narrower than the body and a "mouth." Bottles are often made of glass, plastic or aluminum, and typically used to store liquids. e.g. water, milk, soft drinks, beer, wine, Cooking oil for cooking and as fuel, medicine, liquid soap, shampoo, ink, etc.
For some bottles a deposit is paid, which is returned after returning the bottle to the retailer. For other glass bottles there is often separate garbage collection for recycling.
A device used to close the mouth of a bottle is called a bottle cap (external), or stopper (internal). A bottle can also be sealed using Induction sealing .
Plastic soft drink bottles (two-liter, one-liter, etc) can withstand typical internal carbonation pressures of 2-4 bar (30 - 60 psi.), because the plastic is strain oriented in the stretch blow molding manufacturing process.
Plastic bottles and other hollow plastic containers are manufactured using the blow molding process.
One use of this property is the water rocket.
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