In 1801, the French Nicolas Apert to invent the long-term food preservation method. The food was put into glass bottles and heated so that the food crystals were preserved without corruption.

In 1809, the British Peter Durand used the method of Nicolas Apert to create a tinplate container, all of which belonged to cans instead of glass bottles. This started the development history of canned food, but the tinplate capacity used at that time was all welded cans made of solder. It was not until 1897 that the American Max Ams invented the method of sealing with rubber as a sealant, and the roll seal was born (ie double roll seal). So what is a tinplate? Why can it be used to pack food? Look down.

What is tinplate? Grey iron is cast iron? Is tinplate also cast iron?

Many steel major students have learned gray iron, one of pig iron, also known as cast pig iron, in the course of "Metal Science and Heat Treatment", with a carbon content of about 3% and a silicon content of about 2%. The section is dark gray, usually called gray iron.

What is the tinplate? What is the fracture like a horse? Is it also a kind of cast iron?

In fact, tinplate and gray iron are not the same thing at all. tinplate is not iron, but tinplate. If you don't mix in this circle, you may be brought into the ditch by gray iron.

Legend of the origin of the two tinplate

Tinplate is a tin-plated iron sheet on the surface. It is not easy to rust and is also called tin-plated iron. This kind of coated steel plate has been called "tinplate" for a long time in China. There are three legends about its name:

Legend 1: Introduced from Macau (MACAO), it is homophonic, hence the name tinplate, also known as Yangtie.

Legend 2: It is also rumored to be entered by the horse mouth of the Ali Department of Tibet, hence the name.

Legend 3: China used to use this tin-plated sheet to make the lamp cap of kerosene lamps, which is shaped like a horse's mouth, so it is called "tinplate".

Characteristics of 3 tinplate

(1) Environmental protection: tinplate cans are easy to oxidize and decompose, and are conducive to garbage classification and disposal, and can be recycled and reused.

(2) Safety: Good sealing and long product shelf life.

(3) Consumption: The iron can has good thermal conductivity, is easy to heat, and meets the needs of consumers. It has sufficient strength and hardness, is not easy to deform, and is more convenient to handle and store. The product has multi-level color and exquisite appearance to meet the visual enjoyment of consumers.

(4) Economy: suitable for mass continuous production, low investment cost, so that consumers can enjoy high-quality and inexpensive products.

Basic structure of 4 tinplate

Tinplate is the common name of electroplated tin sheet. The English abbreviation is SPTE ( SPTE : Steel Plate Tin Electrolytic ), which refers to a cold-rolled low-carbon sheet or steel strip plated with commercial pure tin on both sides. 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, and has the characteristics of corrosion resistance, non-toxicity, high strength and good ductility.