Tinplate is the two most popular ingredients for packaging chocolate, cookies and candy. These materials are an effective and safe form of packaging that complies with international safety standards.
Food sellers have been using tin in food containers for more than two centuries. But in the beginning, it often caused food poisoning because people ingested large amounts of metal particles. Doctors began to advise against using tinplate. But over time, scientists have found ways to improve tinplate so it can be used safely as a food container. Acidic food packaging that degrades tin now USES enamel coatings on tinplate containers. Although some metals, such as copper or iron, are needed in the human diet, tin has no dietary value. However, medical experts have determined that traces of tin do not pose a long-term health risk to humans.
Aluminum packaging safety
Like tin, aluminium is not important for human consumption, but when it comes into contact with food, it is not dangerous to use it in its modified form in commercial packaging. In its pure form, however, aluminum is dangerous because of corrosion. To make pure aluminum safe, mix it with copper, zinc, iron, chromium or manganese. Like tin used in food packaging, an enamel coating was added to the aluminum for safety.
Other precautions for tinplate and aluminum
Both tinplate and aluminum come from nature and can be found in the earth's crust. Aluminum is the third most abundant element in the earth's crust, but it can also be found naturally in unprocessed foods such as eggs, cucumbers, cabbage, apples and corn. Metals mixed together to form alloys produce stronger durable metals, such as aluminum used in food packaging. Labels must alert consumers when packaging contains uncoated aluminum.
Tin is commonly used in food packaging materials. Tin cans and aluminum cans can be recycled, usually in the form of cans. Tin plating is now widely used in the European Union and in China. Canned resin-based paint helps prevent tin from being released into food. Therefore, food manufacturers store their food in tin-plated jars.