Have You Ever Been Curious About The History Of Aluminum Foil And Why It’s Actually Only Shiny On One Side?

Currently, aluminum foil is produced by stretching sheets of pure aluminum between steel rollers. As the foil passes through the rolling mill repeatedly, it becomes longer and thinner.

To avoid damaging the aluminum sheets, the pressure of the rollers must be monitored at all times. Aluminum also heats up as it gets rolled out, so it needs to go through a cooling process as well.

And the reason why only one side of aluminum foil is always shiny is that the final product is created by attaching two sheets together.

A single sheet of foil is too delicate to come into contact with the rollers by itself. Therefore, two sheets must be rolled at the same time. The side that directly touches the rollers gets more polished, creating the shiny look.

Now, you know a little more about aluminum foil!

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Have You Ever Been Curious About The History Of Aluminum Foil And Why It’s Actually Only Shiny On One Side?

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