Device for the airtight closure of beverage bottles. The circular piece of metal, which gives the bottle its name, is bent into a crown at the edge and has an insert made of pressed cork, or of the plastics polyethylene (PE), PVC or PVDC, which have long been used in the beverage industry. In the past, a crown cork had 24 prongs, today it has 21 prongs worldwide. With the appropriate bottle neck shape, it is also possible to use a crown cork as a screw cap, so that it can be opened and also closed again without a bottle opener. This is used, for example, with French and American beer bottles. Another special form are crown corks with a pull-off tab (picture in the middle). The crown cork was patented in 1892 by the American inventor William Painter (1838-1906). He called his creation "Crown Cork". Today, the term "stainless cap" is also used. At first, the cap was only used for beer bottles in the USA and quickly replaced the old form of the clip-on bottle. Due to its great success, Painter founded the Crown Cork and Seal Company just one year later, which today is one of the largest manufacturers of crown corks and other beverage articles.
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Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg