In the 21st century, life has drastically changed due to its versatility and universal consumer approval. The metal packaging though being in the market for a long time, with the changes of the market trends, the industry is constantly on the move to research and innovate more of the sizes and designs convenient to meet the needs of increasingly demanding customers. Metal cans which are made of by mostly steel, aluminum or tin are a great asset and investment when it comes to storing and protecting food and also beverages for a long period. Metal containers, made with the aid of a can making machine, have a great advantage over other packaging methods because of its durable, resistance to high temperatures providing stability during processing. However, this method has a few disadvantages that are discussed below;
Steel is vulnerable to corrosion which causes the metal to deteriorate. If you find rust in the can, it is one example of corrosion. This affects the quality and also will bring about an adverse effect on the food packed inside and mostly would make food go bad. This cans can only be coated with polymers to prevent corrosion. However, tin cans are highly recommended since they are less prone to corrosion.
Aluminum and acidic foods
The corrosion of soft drinks in aluminum cans is a big challenge that the industry is facing and usually that results in loss of money. It is also important that metallic elements in food can cause severe health complications. Acidic foods such as tomatoes can be greatly affected by aluminum if the metal is used to store them. This ends up ruining the taste and quality of the food. However, tin cans could be a great alternative since the material is not affected by food acidity.
Content not visible
Most canned food is already sealed and therefore it’s hard for anyone to see whatever content is inside. This becomes hard for one to make a right choice since you may pick a can that has content that is not the desired one and this poses a significant challenge to the consumers. They sometimes prefer other packaging materials such as plastics in some situations where one needs transparency.
Metal is moderately heavy packaging material
Compared to other methods of packaging such as plastic, steel is heavy. That is why it is more durable than other metals used in the packaging of foods. However, that means that it is quite expensive due to its construction process. That makes these cans expensive depending on quality of the material that is used. Therefore, you will be spending more in this method of packaging.
Multi-step cans manufacturing process
Manufacturing of metal cans involves several procedures in the production line and several input materials. It also involves different machines that makeup the can making machine such as the seaming machine, slitting machine among others. There is also the need for a sealing machine to seal them, therefore, a lot of time taken in this process.