Aluminum can

Container for packaging made primarily of aluminum

Aluminum Can

An aluminum can is a container for packaging made primarily of aluminum. It is commonly used for packaging beverages such as soft drinks, beer, and other liquids, but it is also used for food and other products. Aluminum cans are widely used because they are lightweight, durable, and recyclable.

An easy-open aluminum can

History

The development of the aluminum can began in the mid-20th century. The first aluminum beverage can was introduced in 1958 by the Adolph Coors Company. The use of aluminum for cans became more widespread in the 1960s and 1970s as the advantages of aluminum over other materials, such as steel, became apparent. Aluminum cans are lighter, do not rust, and can be recycled more efficiently than steel cans.

Manufacturing Process

The manufacturing of aluminum cans involves several steps:

Sheeting

Aluminum is first rolled into thin sheets. These sheets are then cut into small circles, which will form the body of the can.

Forming

The circles are drawn into cup shapes and then ironed into the final can shape. This process is known as "drawing and ironing".

Trimming

The tops of the cans are trimmed to ensure they are all the same height.

Necking and Flanging

The top of the can is narrowed, or "necked", to allow for the attachment of the lid. A flange is also created to help secure the lid.

Lidding

The lid, which includes the pull tab, is attached to the can. The pull tab is a key feature that allows for easy opening of the can.

A ring-pull tab on a can

Recycling

Aluminum cans are highly recyclable. Recycling aluminum requires only about 5% of the energy needed to produce new aluminum from raw materials. This makes aluminum cans one of the most environmentally friendly packaging options available.

Recycling sorting facility

Uses

Aluminum cans are used for a variety of products:

• Beverages: The most common use for aluminum cans is for packaging beverages such as soda, beer, and energy drinks.
• Food: Some food products, such as canned meat and soups, are also packaged in aluminum cans.

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Canned meat in an aluminum can

Environmental Impact

While aluminum cans are recyclable, they can still have an environmental impact if not properly disposed of. Littering and improper disposal can lead to environmental pollution.

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Littered aluminum cans

Opening Mechanism

The modern aluminum can features a pull tab that allows for easy opening. This design was developed to improve convenience and safety compared to older can opening methods.

Inside view of can opening mechanics

Related Pages

• Recycling
• Beverage can
• Packaging
• Sustainability