Frequently Asked Questions
How can we differentiate between steel and aluminium cans?
Steel is the only metal which is magnetic, so if a magnet is able to stick to it, the material is steel.
Why are cans called tins?
This reference comes from the very thin layer of tin (about 15 millionths of an inch thick – less than a human hair) applied to prevent rusting and help keep the contents in the cans fresh and safe, even for corrosive food such as acidic fruits.
Are there other types of cans besides steel and aluminium?
There is also Tin Free Steel (TFS), which is produced by applying electrolytic chromic acid treatment over steel sheets. TFS is commonly used for making beverage cans. It is highly heat-resistant, causing neither discoloration nor deterioration in material properties. It also has excellent resistance to black sulfide stain, making it the most suitable material for making fish cans.
Why are cans the preferred form of food packaging?
Cans are lightweight and volume-efficient. They stack well for storage and transportation, and are rigid and unbreakable, as well as tamper-proof. They are friendlier to the environment as they are 100% recyclable. Cans also maintain the freshness of their contents longer than any other form of packaging.
How many types of cans are in production?
There are more than 600 sizes and styles of cans being manufactured today. They include 2-piece aluminium beverage cans, round composite cans, round sanitary open top, aerosol, drawn tins, friction plug style (paint), key opening, screw top, plastic top (cone tops and other configurations), slip cover, oblong cans (easy opening, edible oil type, hinged cover, household machine oil, key opening, spice type, solvent style) and square cans.
Steel cans are said to be 100% recyclable. What does this mean?
Every bit of a steel can can be recycled and used as material in the steel-making process. It can be remade into a new can or something else (e.g. construction material, vehicles).
Which is the most valuable container in the recycling bin?
Aluminium cans. Aluminium is the only packaging material that covers its cost of collection and re-processing.
How should cans be prepared for recycling?
They should be rinsed clean and dried. For steel cans, place the lids inside the cans and recycle the entire can.
What is the difference between closed-loop recycling and open-loop recycling?
Closed-loop recycling is recycling at its best – a product is remanufactured back into the same product – and the process can be repeated endlessly. Open-loop recycling is where a product is recycled and made into something else, like steel cans into steel pipes.
How is recycling aluminium cans beneficial?
Each aluminium can recycled saves enough electricity to power a TV for 3 hours, or a 100-watt light bulb for 4 hours. Recycling aluminium cans instead of producing them from virgin ore also saves energy by 95%.
Why use recycled material?
Every ton (1,016kg) of steel recycled saves this much of natural resources that would otherwise be used to make new steel: 2,500 pounds (1,133kg) of iron ore, 1,400 pounds (635kg) of coal and 120 pounds (54kg) of limestone.
How many varieties of food are available in cans?
More than 1,500. Canned food is superior to food in other forms of packaging as they retain as much or more nutrients compared to even fresh food.
Canned food can last up to two years. Are the contents inside safe? Do they react to the materials used to make cans?
Most of the food and beverage metal containers are coated with Bisphenol A (BPA) based epoxy resins to protect the food from a direct contact with the cans. Bisphenol A -Not Intentionally Added [ BPANI ] lacquers which do not contain BPA have been developed and their application in the industry has been studied and implemented on various range of products. The implementation is done gradually as risk assessments must be conducted for each type of lacquer system / product / manufacturing process, and this can take years to complete. The BPANI lacquers are still not as universal in their application as the epoxy lacquers were, and this is the main challenge faced by the Industry.
Is it true that cans are getting lighter?
Yes. There are 34.21 aluminium beverage cans to a pound (0.45kg) now compared 21.75 cans in 2006. The first 2-piece aluminium cans weighed 3 ounces (85g). Now they weigh less than one-half ounce (43g).
Which was the first canned soft drink?
Cliquot Club ginger ale, which debuted in 1938. The can was the cone top type produced by the Continental Can Company.
How about the first canned beer?
Kreuger Beer, made by the American Can Company. It was first sold in 1935 in Richmond, Virginia. It came in a flat or punch top steel can that required a can opener.
When did vending machines start serving canned soft drinks?
1961. By the late 1960s, canned soft drinks dominated the vending market over bottle and paper cup machines.