Carbonated drinks became popular in the mid-19th century, and the most popular flip top bottle cap was the mainstream bottle cap at that time. William Painter invented the crown cap we have been using since 1892, further enhancing the sealing of the product.
There is a metal cap above the crown cap, which contains a thin cork cushion to maintain good sealing and prevent direct contact between drinks and the metal cap. And this metal cap has a ripple edge, which allows the cap to firmly grip the glass bottle when it gets stuck at the mouth. Combined with a cork stopper, it can achieve complete sealing and prevent liquid or gas from flowing out.
Later, with the advancement of technology, the crown cap was also optimized - from cork discs to PVC materials. Since 2011, domestic enterprises have been replacing PVC materials with thermoplastic elastomers in bulk [20]; The number of cap teeth has decreased from 24 to 21; Shortened skirt height. The crown cap is a universal bottle cap used today for carbonated beverages in glass bottles.
Currently, crown caps are commonly used in glass bottle packaging for beer, carbonated drinks, and other beverages.
