Metal cans are modern fast food, a can is portable, and disaster-resistant sailing and mountain-climbing expeditions all rely on it.

So what material are metal cans made of? Nowadays, the packaging materials of metal cans are all tin-plated iron sheets. The tin-plated layer has strong corrosion resistance, and the steel ensures the mechanical strength of the packaging. And these metal cans are also called tinplate cans, but tinplate is not iron, but tinned steel.

The main advantages of tin-plated steel plate are: soft, easy to bend, stretch, punch, lighter in weight than glass jars, not easy to break, easy to carry, transport and store, good thermal conductivity, short sterilization time, not easy to be used when the temperature changes sharply rupture.

The general thickness of tin-plated steel sheet is about 0.15 to 0.30mm.

Tin is a low melting point metal with silvery white metallic luster, pure tin is soft, the content in the earth’s crust is 0.004%, and almost all exist in the form of cassiterite (tin oxide);

As one of “hardware” (gold, silver, copper, iron, tin), tin has been used by humans as early as 2000 BC;

The general thickness of tin-plated steel sheet is about 0.15 to 0.30mm.

Tin is a low melting point metal with silvery white metallic luster, pure tin is soft, the content in the earth’s crust is 0.004%, and almost all exist in the form of cassiterite (tin oxide);

As one of “hardware” (gold, silver, copper, iron, tin), tin has been used by humans as early as 2000 BC;

At present, tin is mainly used in the manufacture of solder, tinplate, alloys, chemical products, etc. The products are widely used in electronics, information, electrical appliances, chemical industry, metallurgy, building materials, food packaging, machinery, atomic energy and aerospace industries.

Reduction of Tin

The tin on the inner wall of the tinplate will interact with the oxygen remaining in the container during filling, reducing the chance of the food ingredients being oxidized. The reduction effect of tin has a good preservation effect on the flavor and color of light-colored fruits, juices and other foods. According to experiments, juice cans packed with unpainted metal cans have better nutritional preservation than juice cans packed with other packaging materials. The browning changes slightly, the acceptance of flavor quality is better, and the storage period is prolonged.

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