Aluminum foil is made from an aluminum alloy that contains between 92 and 99 percent aluminum. Typically between 0.00017 and 0.0059 inches thick, aluminum foils can be produced in many widths and strengths for hundreds of uses.
It is used in the manufacture of insulation materials for the construction industry, fins for air conditioners, coils for transformers, capacitors for radios and televisions, insulation for storage tanks, decorative products, containers and packaging materials.
The wide application of aluminum foil is due to several major advantages, the most important of which is that the raw materials needed for its manufacture are plentiful.Aluminum foil is cheap, durable, non-toxic and oil-resistant. In addition, it is resistant to chemical corrosion and provides excellent electrical and non-magnetic shielding.
Aluminum is one of the most abundant elements: after oxygen and silicon, it is the most abundant element found on the Earth’s surface.At a depth of ten miles, the earth’s crust contains more than eight percent aluminum, which is found in almost every ordinary rock.However, aluminum does not exist as a pure metal, but as alumina hydrate (a mixture of water and alumina) combined with silicon dioxide, iron oxide, and titanium dioxide.
The most important aluminum ore is bauxite, named after the French town of Les Baux, where it was discovered in 1821.Bauxite contains iron and alumina hydrate, which is its largest constituent. Currently, bauxite is so abundant that only deposits containing more than 45 percent alumina can be mined for aluminum production.
Concentrated deposits are found in both hemispheres, with most of the ore used in the United States coming from the West Indies, North America, and Australia.Because bauxite is so close to the surface, the mining process is relatively simple.Explosives are used to dig large pits in bauxite deposits and then remove the dirt and rock on top.
The exposed ore is then removed by front-end loaders, loaded into trucks or train cars, and transported to the processing plant.
In addition to in-process control of such parameters as temperature and time, the finished foil product must meet certain requirements. For instance, different converting processes and end uses have been found to require varying degrees of dryness on the foil surface for satisfactory performance.
A wettability test is used to determine the dryness. In this test, different solutions of ethyl alcohol in distilled water, in increments of ten percent by volume, are poured in a uniform stream onto the foil surface. If no drops form, the wettability is zero. The process is continued until it is determined what minimum percent of alcohol solution will completely wet the foil surface.
Other important properties are thickness and tensile strength. Standard test methods have been developed by the American Society For Testing and Materials (ASTM). Thickness is determined by weighing a sample and measuring its area, and then dividing the weight by the product of the area times the alloy density.
Tension testing of foil must be carefully controlled because test results can be affected by rough edges and the presence of small defects, as well as other variables. The sample is placed in a grip and a tensile or pulling force is applied until fracture of the sample occurs. The force or strength required to break the sample is measured.
Aluminum foil is available in a variety of thicknesses from about 6 μm and higher. Aluminum foil is often the most expensive layer in a multilayer flexible package, so the thinnest possible thickness is used.
Since in theory aluminum foil is an impenetrable barrier, the minimum thickness is determined by defects that may occur during the foil manufacturing process, during handling by the converter and on the packaging line, and in the end use. Pinholes and flex cracking often lower the barrier performance of foil-based packaging
Aluminum foil is typically coated with a lacquer- or water-based latex or laminated to a polymer film via adhesive or extrusion coating or lamination. Vinyl-based lacquer-coated aluminum foils are used in many lidding applications, particularly for dairy products such as yogurt. Laminations are used in many applications such as pharmaceutical packaging, aseptic liquid packaging, and condiment sachets.
It’s a Wrap!
Whenever you need to store, bake, reheat, or roast food, a heavy duty cling wrap makes things more convenient for you. This food wrap dispenser is an essential kitchen supply that you can use for covering your grills, lining an oven, or keeping leftovers in the fridge fresh for the next day. Plus, it’s a basic necessity when making baked potatoes, pies, and so much more!
Not all foil wraps are created equal. There are thin and flimsy ones that you can barely use for wrapping, and there are heavy duty and thicker foils with multiple functions. This aluminum foil roll is a superior quality heavy gauge foil designed for commercial kitchens. Compared with regular foils that claim to have a heavy duty quality, this product is EXTRA sturdy than the average brand.
You’ll love this household foil because of these feature
– Great for covering your stainless steel pans.
– Perfect for various food service applications.
– Does not tear right away.
– Comes with a cutter box dispense for your convenience.
– Available as a single roll of foil.
(1) Aluminum foil surface is clean, sanitary, no bacteria or micro-organisms can not grow on its surface.
(2) aluminum foil is a non-toxic packaging material, it can directly contact with food without any harm to human health.
(3) aluminum foil is a kind of tasteless odorless packaging material, will not make the packaging of food have any peculiar smell.
(4) aluminum foil itself is not volatile, it itself and packaged food will never dry or shrink.
(5) at high temperature or low temperature, aluminum foil will not have the phenomenon of oil permeability.
(6) aluminum foil is a kind of opaque packaging material, so it is a kind of good packing material for the products of sunlight irradiation.
(7) aluminum foil has good plasticity, so it can be used to pack all kinds of products. Can also cause any shape containers. Product parameters of customized food grade household Catering 8011 Aluminum foil roll for food packaging cooking frozen barbecue.