Tin cans are considered one of the most popular packaging materials in the world. These small tin cans are easy to make and inexpensive, and can be made in any color, shape or design. Although the name may suggest otherwise, the cans are not actually made of tin. So what are tin cans made of?
Tin cans & ndash; What is it made of?
Although empty cans are often called Tin cans & throughout; But few modern tin cans are made entirely from tin cans. People call these empty cans ldquo; Canned & throughout; The main reason can be traced back to the late 20th century. At that time, cans were made of tin-plated steel, the purpose of which was to combine the strength and endurance of the steel with the corrosion resistance of tin.
Nowadays, empty tin cans are generally made of any thin metal. Range from aluminum to steel or iron. Although this is not always the case, these small tin cans are usually covered with tin. Since the 1960s, aluminium has by far been the first choice for small tin cans. The reason behind this is that it is cheaper and easier to form. As a result, the manufacturing process has become cheaper and less time-consuming than before. Aluminium is known to have the same corrosion resistance and is therefore an ideal substitute.
The reason you can't make empty cans entirely out of tin is that tin is, in fact, a very rare material. Although it is thought to be. Common metals. Rather than gold or platinum. Precious metals & throughout; , but it's still less available than you might think. In fact, tin is probably the least of them all. Common throughout the &; One of the metals. Indeed, there are a limited number of tin mines in the world. Scientists even predict that, in the future, we might run out of tin altogether.
For these reasons, making anything out of pure tin would be very expensive and difficult. This is especially true for everyday items such as packaging materials. As of today (2018), tin is trading at $20.61 per kg, while aluminum is trading at just $2.1 per kg. As you can imagine, this major price difference leads to the fact that manufacturers prefer to use different metals for tin cans. Most empty cans made today are made of aluminum or other cheap alloys.
Traditional tin can
The only product of pure tin is tin foil. The material is often used for scientific experiences but can also be used to wrap other objects such as chocolate bars. Because tin can be squashed in very thin flakes, it allows us to create large amounts of tin with very little. The plating & throughout; . In addition to tin foil, this coating is often used in traditional containers. It has been estimated that a pound of pure tin can produce up to 12.08 square metres of tin foil or tin plating. For this reason, tin has become very popular in electroplating and is often used in pure metal cans.
Besides the fact that tin can be easily flattened, there is another reason for using it as an electroplating material. Tin does not interact with oxygen - therefore, it does not rust or change color and is highly corrosion resistant.
Today, we use most of the world's tin to make tin cans. These empty cans are made mainly of tin-plated steel or iron. Therefore, all can only be made of 1 or 2 percent tin. This forms a coating on the metal to protect it from the elements. Due to its protective function, the coating can be used for packaging of a large number of commercial items, such as tin cans.
Tin cans are mainly used for the storage of canned food, cosmetics, medicines and candles in the form of candle cans. Ordinary metals usually react with acids present in these substances, and then they begin to corrode. When this happens, the can releases molecules that could contaminate the contents of the package, damaging the can itself. In the past, this has led to problems with lead packaging in particular. These jars are known to leach harmful toxins out of them. However, tin cans are completely safe because of their acid resistance, allowing them to store food, cosmetics and medicines for a longer period of time. The only disadvantage of traditional tin cans is that they are much heavier than aluminum cans.
Modern tin can
Generally speaking, tin cans are considered to be used in the production of cans. Traditional & throughout; Way. Most small tin cans sold in the world today are made of aluminum or different types of processed metals. Any material is suitable as long as it is easy to form and resistant to rust and corrosion. Both traditional and modern cans are well suited to canning and can be recycled. So manufacturers can peel off the tinplate and then reuse iron or steel for scrap.