From Raw Aluminum to Refreshing Brew: The Fascinating Process of Beer Can Fabrication

Beer cans have been around for over a century, but have you ever thought about how these metal containers are made? The process of beer can fabrication involves several steps, from raw aluminum to refreshing brew. Let’s take a closer look at this fascinating process.

The Raw Materials

To make a beer can, you need several raw materials. The first is aluminum, which is mined from the earth and refined into sheets of metal. The sheets are then cut into circles that will form the top and bottom of the can. The second raw material is ink. The ink is used for printing the design on the outside of the can.

The Printing Process

Before the printing process can begin, the aluminum circles must be cleaned and coated with a layer of white ink. This layer acts as a base for the design and ensures that the colors will be bright and vibrant. The designs are then printed on the cans using a process called offset lithography. This technique transfers the image from a printing plate to the can using a series of rollers.

The Forming Process

Once the design is printed, the flat circles of aluminum are formed into the familiar cylindrical shape of a beer can. This is accomplished using a mechanical process known as drawing and ironing. The aluminum is drawn through a series of dies, which progressively stretch and shape it into the can shape. Then, the top of the can is formed using a process called ironing, which involves applying pressure to shape it into its final form.

Finishing Touches

Once the cans are shaped, the next step is to add the final touches. This includes adding the pull tab, which is used to open the can, and the bottom of the can, which is sealed using a seamer. The pull tab is attached using a process called riveting, which involves punching a hole in the top of the can and inserting the tab. Finally, the cans are sent to be filled with beer and then sealed with a lid.

The Advantages of Using Beer Cans

Beer cans have become a popular packaging choice for breweries worldwide. Not only are they easier to stack and transport than bottles, but they are also less prone to breakage, which means fewer broken bottles and lower costs for the brewery.

Frequently Asked Questions

Q: Can beer cans be recycled?
A: Yes, beer cans are made of aluminum, which is a recyclable material. In fact, aluminum cans are one of the most recycled materials in the world.

Q: Why do beer cans have a pull tab?
A: The pull tab was invented in the 1960s and made it easier for beer drinkers to open their cans. Before that, cans had to be punched open using a can opener or similar tool.

Q: How are beer cans made waterproof?
A: Beer cans are made waterproof using a layer of polymer coating on the inside of the can. This prevents the beer from interacting with the metal and keeps it fresh.

In conclusion, the process of beer can fabrication involves several complex steps, but the end result is a convenient, durable container that keeps your beer fresh and tasty. From raw aluminum to refreshing brew, the journey of a beer can is truly fascinating.