I believe many people will order a few bottles of beer at parties, and now there are more and more beer brands on the market. Although the alcohol content of beer is not as good as that of liquor, many people who didn't drink in the past have hardly touched it. But with the continuous progress of society, we have more choices in choosing beer. Nowadays, beer is not only divided into different fruit flavors, but also the alcohol content is well controlled, so more and more people gradually like to drink beer.

It turns out that the number of serrated beer bottle caps is not 2 1. There are 23 and 24 serrated bottle caps respectively, all of which have applied for patents. As early as the end of 19, William Pate invented the 24-tooth bottle cap and applied for a patent. There is also a piece of paper in it to prevent the drink from touching the metal, which is mainly based on Pete's discovery that the number of teeth is the best number to seal the bottle. As an industry standard, the 24-tooth bottle cap has been used until about 1930.

It may be too simple to design the bottle cap into three serrations, and the fixation is not very good for a bottle filled with liquid, so at this time he wondered if he could write an article with a multiple of 3. It turns out that only 2 1 is the best way to control the bottle cap. Later, the design of this bottle cap was also imitated. Later, many beer companies wanted to make a fuss about bottle caps and change the design method to achieve innovative results, but in the end they basically failed.

Another reason why the number of serrations on the bottle cap is 2 1 is related to the screwdriver. Beer contains a lot of gas, if it is not opened correctly. If the internal air pressure is uneven, it is very easy to hurt people. After the invention of the screwdriver suitable for opening the bottle cap, it is finally determined that the bottle cap is the easiest and safest when it has 2 1 teeth by constantly modifying the sawtooth. So all the beer caps you see today have 2 1 serrations.