Bottle Top
A bottle cap or bottle top is a Closure (container), closure for the top opening of a bottle. A cap is sometimes colourfully decorated with the logo of the brand of contents. Plastic caps are used for plastic bottles, while metal with plastic backing is used for glass; plastic caps are commonly made from Polyethylene, PE or Polypropylene, PP, whilst metal caps are usually either steel or aluminum. Plastic caps may have a pour spout. Flip-Top caps like Flapper closures provide controlled dispensing of dry products. Caps for plastic bottles are often made of a different type of plastic from the bottle. A Stopper (plug), cork is another type of closure for the top of a bottle. Types Caps were originally designed to be pressed over and around the top of a glass bottle to grab a small flange on the bottleneck. Crown cork The crown cork was patented by William Painter (inventor), William Painter on February 2, 1892 (U.S. Patent 468,258). It had 24 teeth and a cork seal with a pa ...
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