
The British invented the first tinplate can for food and long-term preservation in 1800, but the tinplate at this time was produced by the hot-dip tin method. After the 1820s, tin cans have been very large in the United States. In 1847, the United States invented the can-making machine, which gradually replaced manual can-making; the invention of the electric welding machine in 1900 greatly improved the efficiency of tinplate can-making, and because of the high price of tin, people gradually gradually Tinplate is produced by electroplating tin; after the 1990s, can making technology has developed rapidly, and high-speed welding machines can reach a production level of 1,000 cans per minute. Since the mid-20th century, electroplated chrome steel sheets have appeared one after another to replace the use of some tin can products.