Bottle cap

Bottle caps are used to seal the opening of a bottle. For glass bottles they are small circular pieces of metal with plastic backings, and for plastic bottles a plastic cap is used instead. A bottle cap is typically colorfully decorated with the logo of the brand of beverage. Plastic bottle caps are often made of a different type of plastic than the bottle itself, and may not be recycleable.

Related Topics:
Bottle - Glass - Metal - Plastic - Logo - Recycleable

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Bottle caps were originally designed to be pressed over and around the top of the glass bottle to grab a small flange on the bottle. To open these bottles, a bottle opener is required. An innovation was the twist-off bottle cap that is pressed around screw threads instead of a flange. Such a bottle cap can be taken off merely by twisting the cap. Even though this is now the predominant form of bottle cap, non-twist-off caps are used by some manufacturers.

Related Topics:
Bottle opener - Screw

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Bottle caps are also a way for bottlers to hold promotions, especially for soda companies. A message is printed on the inside of the cap and people with the right message may win a prize. Since the bottle must be purchased to determine the message and win, people usually purchase more of the drink to increase their chances of winning. The most common prize is a free soda from that company.

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Some companies, such as Snapple, also print interesting facts on the inside of their caps. Usually this is done on wide-mouthed bottles that have large caps with enough printing area to put a small sentence.

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