The origin of tinplate
Tinplate was called “Yangtie” in the early days, and its official name should be tinned sheet steel. Because China’s first batch of foreign iron was imported from Macau in the middle of the Qing Dynasty, Macau was transliterated (Makou) at that time, so the Chinese generally called it (tinplate).
What is tinplate
Tinplate is the common name for electroplated tin sheet steel. The English abbreviation is SPTE, which refers to cold-rolled low-carbon thin steel sheet or steel strip plated with pure tin on both sides, also called tin-plated iron. Tin mainly plays a role in preventing corrosion and rust. It combines the strength and formability of steel with the corrosion resistance, solderability and beautiful appearance of tin in one material. It has corrosion resistance, non-toxicity, and high strength. , Good ductility characteristics.
The characteristics of tinplate
Tinplate is widely used in packaging, which has its advantages:
(1) It is opaque. In addition to the deteriorating reaction of food, light can also cause changes in protein and amino acids. The opacity of tinplate makes the preservation rate of vitamin C higher.
(2) Good sealing
(3) The reduction effect of tin can reduce the chance of food being oxidized
(4) Provide a source of effective iron. Due to the electrochemical effect of metal, a small amount of iron will dissolve in the storage of canned food. It exists in the sealed canned food in the form of divalent iron and is easily absorbed by people.
Because of these properties, tinplate cans provide a closed system that completely isolates environmental factors in addition to heat. Using it to store food and beverages can prevent food from deteriorating due to light, oxygen, and moisture, and it will not be affected by aroma penetration. It becomes weaker or becomes smelly through pollution by environmental odors. The storage stability of food is better than other packaging materials, the preservation rate of vitamin C is higher, and the retention of nutrients is also better.
The above is a small point of tinplate knowledge. In fact, the story happens in our lives. We are full of knowledge in our lives and work. As long as we are good at learning, boring things will become very interesting and your spirit will also change. Very rich.