The origin of the name of the tinplate
I think every Chinese should remember the days of Macao's return. I remember the song "Macau's Son" which was sung in the return of Macao. Macao is called "Macau" and the name of the tinplate is also from Macao.
The tinplate was called iron iron in the early days. The official name should be tinplate. Because China's first batch of foreign iron was imported from Macao in the middle of the Qing Dynasty, and Macao was transliterated (Makou), the Chinese generally referred to it as a tinplate.
What is tinplate?
Tinplate is a common name for electroplated tin steel sheets. The English abbreviation is SPTE, which refers to cold-rolled low-carbon steel sheets or steel strips coated with pure tin on both sides, also called tin-plated iron. Tin is mainly used to prevent corrosion and rust. It combines the strength and formability of steel with the corrosion resistance, solderability and aesthetic appearance of tin. It is corrosion-resistant, non-toxic and high-strength. , good ductility.
Tinplate and its origin bohemian
Everyone may be stranger to Bohemia (now in the Czech Republic and Slovakia), but its history and culture will not be forgotten by everyone. In the 5th century AD, the Slavs who moved from the east built the Bohemian kingdom and proliferated a splendid culture. The prosperity of Prague in the City of Baita is an outstanding masterpiece of this period. This makes Bohemia not only symbolizes the fashion of tassels, folds, and large swing skirts, but also becomes synonymous with free and easy, passionate and unrestrained.
Bohemian is also the origin of tinplate. The area has been rich in metal since ancient times, with advanced technology and knows how to use hydraulics to manufacture machinery. Since the 14th century, it has been producing tinplate. For a long time, it has been the main producer of tinplate in the world. At that time, tinplate was mainly used to make tableware and drinking utensils.
The characteristics of tinplate
Tinplate is widely used in packaging and has its advantages:
(1) It is opaque, and in addition to causing poor quality reaction of food, it also causes changes in protein and amino acids. The opacity of tinplate can make vitamin C the highest preservation rate.
(2) Good sealing.
(3) Reduction of tin reduces the chance of food being oxidized
(4) Providing a source of effective iron. Due to the electrochemical action of the metal, the canned food will have a small amount of iron dissolved during storage, and it exists in the sealed canned food in the form of divalent iron, and is easily absorbed by the human body.
Because of these properties, tinplate can provide a closed system that completely separates the environment from heat. It can be used to contain food and beverages to prevent food from fissing due to light, oxygen and moisture, and not to be attenuated by aroma transmission. Or the environmental odor is tainted by pollution, and the stability of food storage is superior to other packaging materials. The preservation rate of vitamin C is the highest, and the retention of nutrients is also the best.
Note: The article comes from the "metal packaging" journal - metal packaging knowledge encyclopedia