How Is The Aluminum Foil Made


Aluminum foil is produced by rolling aluminum slabs cast from molten aluminum in a rolling mill to the desired thickness. To maintain a constant thickness, a technician monitors the rolling mill sensors to ensure the pressure on the slab is correct. Sensors are able to tell the technician if the pressure is too great or not enough and then the technician can adjust the rollers to apply more or less pressure. It is then coiled and sent to the cold rolling mill.

To avoid breakage because of the thinness, the foil is doubled in the cold rolling mill and the rolled to the desired thickness. Aluminum foil provides a complete barrier to light, oxygen, moisture and bacteria. For this reason, foil is used extensively in food and pharmaceutical packaging. It is also used to make aseptic packaging that enables storage of perishable goods without refrigeration.

Aluminum has many uses in heavy industry because it can be made in a variety of thicknesses and it also is semi-conductive and reflective of heat and light. This metal is also waterproof after a thickness of greater than one millimeter and therefore can be used to keep liquid out of certain materials and it is also used inside many different consumer electronics devices.Brighten up the electrical lighting in your backyard or camp site by making a foil reflector to put behind the light. Attach the reflector to the fixture with a few strips of electrical tape or gaffer tape - do not apply tape directly to the bulb.

The aluminum tape was an excellent choice as it did not lose its shape, or adhesion, and did not deteriorate over time.