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Aluminium foil acts as a total barrier to light and oxygen (which cause fats to oxidise or become rancid), odours and flavours, moistness, and germs, it is used broadly in food and pharmaceutical packaging. The purpose of aluminium is to make long-life packs (aseptic processing|aseptic packaging) for drinks and dairy goods, which allows storing without refrigeration. Aluminium foil containers and trays are used to bake pies and to pack takeaway meals, ready snacks and long life pet foods.

Aluminium foil is widely sold into the consumer market, often in rolls of 500 mm (20 in) width and several metres in length.It is used for wrapping food in order to preserve it, for example, when storing leftover food in a refrigerator (where it serves the additional purpose of preventing odour exchange), when taking sandwiches on a journey, or when selling some kinds of take-away or fast food. Tex-Mex restaurants in the United States, for example, typically provide take-away burritos wrapped in aluminium foil.

Aluminium foils thicker than 25 μm (1 mil) are impermeable to oxygen and water. Foils thinner than this become slightly permeable due to minute pinholes caused by the production process.

Aluminium foil has a shiny side and a matte side. The shiny side is produced when the aluminium is rolled during the final pass. It is difficult to produce rollers with a gap fine enough to cope with the foil gauge, therefore, for the final pass, two sheets are rolled at the same time, doubling the thickness of the gauge at entry to the rollers. When the sheets are later separated, the inside surface is dull, and the outside surface is shiny. This difference in the finish has led to the perception that favouring a side has an effect when cooking. While many believe that the different properties keep heat out when wrapped with the shiny finish facing out, and keep heat in with the shiny finish facing inwards, the actual difference is imperceptible without instrumentation.The reflectivity of bright aluminium foil is 88% while dull embossed foil is about 80%.

We provide a full range of precision aluminum strip for almost any application. We produce aluminum strip in a wide variety of alloys, including clad composites. Our aluminum strip can be produced in standard dimensions or custom made to your special requirements. We produce both imperial and metric units. We manufacture in compliance with the main international specifications, and tighter tolerances or custom tempers are available upon request. We offer various surface conditions, custom finishes (painting, anodizing, embossing), special processing, and multiple packaging options to meet our customer's unique requirements. The following is a summary of our capabilities.

Manufactured in compliance with the main international specifications and standards, including:  Aluminum Association, ASTM, EN, and DIN.
We can also manufacture in compliance with other international standards including:ASME, SAE, AMS, AWS, FED, MIL, QQ, ISO, BS, AFNOR, JIS and GOST.

Manufactured in compliance with the main international specifications and standards.
Tighter tolerances are available upon request.


Aluminium (or aluminum; see spelling differences) is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery white, soft, ductile metal. Aluminium is the third most abundant element (after oxygen and silicon), and the most abundant metal in the Earth's crust. It makes up about 8% by weight of the Earth's solid surface. Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals.The chief ore of aluminium is bauxite.

Aluminium is remarkable for the metal's low density and for its ability to resist corrosion due to the phenomenon of passivation. Structural components made from aluminium and its alloys are vital to the aerospace industry and are important in other areas of transportation and structural materials. The most useful compounds of aluminium, at least on a weight basis, are the oxides and sulfates.

Despite its prevalence in the environment, no known form of life uses aluminium salts metabolically. In keeping with its pervasiveness, aluminium is well tolerated by plants and animals. Owing to their prevalence, potential beneficial (or otherwise) biological roles of aluminium compounds are of continuing interest.

The earliest citation given in the Oxford English Dictionary for any word used as a name for this element is alumium, which British chemist and inventor Humphry Davy employed in 1808 for the metal he was trying to isolate electrolytically from the mineral alumina. The citation is from the journal Philosophical Transactions of the Royal Society of London: "Had I been so fortunate as to have obtained more certain evidences on this subject, and to have procured the metallic substances I was in search of, I should have proposed for them the names of silicium, alumium, zirconium, and glucium."

Davy settled on aluminum by the time he published his 1812 book Chemical Philosophy: "This substance appears to contain a peculiar metal, but as yet Aluminum has not been obtained in a perfectly free state, though alloys of it with other metalline substances have been procured sufficiently distinct to indicate the probable nature of alumina."[69] But the same year, an anonymous contributor to the Quarterly Review, a British political-literary journal, in a review of Davy's book, objected to aluminum and proposed the name aluminium, "for so we shall take the liberty of writing the word, in preference to aluminum, which has a less classical sound."

The -ium suffix conformed to the precedent set in other newly discovered elements of the time: potassium, sodium, magnesium, calcium, and strontium (all of which Davy isolated himself). Nevertheless, -um spellings for elements were not unknown at the time, as for example platinum, known to Europeans since the 16th century, molybdenum, discovered in 1778, and tantalum, discovered in 1802. The -um suffix is consistent with the universal spelling alumina for the oxide (as opposed to aluminia), as lanthana is the oxide of lanthanum, and magnesia, ceria, and thoria are the oxides of magnesium, cerium, and thorium respectively.

The aluminum spelling is used in the Webster's Dictionary of 1828. In his advertising handbill for his new electrolytic method of producing the metal in 1892, Charles Martin Hall used the -um spelling, despite his constant use of the -ium spelling in all the patents[58] he filed between 1886 and 1903. It has consequently been suggested[by whom?] that the spelling reflects an easier-to-pronounce word with one fewer syllable, or that the spelling on the flyer was a mistake.[citation needed] Hall's domination of production of the metal ensured that aluminum became the standard English spelling in North America.

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Q:Find a weld and riveting machine to connect the two roll of aluminum together. the width of aluminum is 40-60cm,because the surface of aluminum has a layer of oxidation film,so...
I am a high voltage professional welder. I can't endure the current surge,even the spot welding. the surface oxidation film can be baked by the cutting knife,or polish by the abrader. no matter how big the welding rod is useless.The aluminum is too thin.
Q:Is the aluminum foil tape resistant to high temperature?
The aluminum foil tape is resistant to high temperature. It is mainly for binding ducts. Heat-resisting and weather-proof are its basic properties. Aluminum foil usually can resist temperature over 300 and most of the tape can resist temperature about 180. As aluminum foil itself conducts heat, it will speed up the loss of heat. Therefore, before wrapping the aluminum foil, you can put some thermal insulation cotton inside.
Q:As for cast aluminum sheet or wrought one, which one has faster heat conduction?
1,duralumin: it's the alloy of aluminum, copper, magnesium, manganese and other metals. it's suitable for compacting by rolling, and it has a higher strength and hardness than common aluminum products. 2, aluminum: it contains many inpurities, is crisp and easy to be smashed.cast aluminum usually is secondary aluminum, and it is produced by remelting the collected old aluminum pots and spoons.3, wrought aluminum: it contains 98% aluminum and 2% or more inpurities, and is comparatively pure aluminum. its soft priority makes it suitable for being pressed into various shapes, aluminum pots,aluminum lunch box,aluminum sheets,aluminum wires,aluminum pipes are all made by wrought aluminum.you will know their defferences from their definition.
Q:How to purchase PE polyester coated aluminum sheet and PVDF fluorocarbon coated aluminum coil?
Both belong to color coated aluminum sheet and coil. Customers can purchase ordinary aluminum sheet or coil, and then go to special coating company to add PE polyester coating or PVDF fluorocarbon coating. The color is bright and quality is also very good. PE polyester coated aluminum and PVDF fluorocarbon coated aluminum coil has a wide range of usages: construction industry (aluminum-plastic panel, aluminum honeycomb, roof corrugated sheet, fireproof veneer, aluminum ceiling, shutter, rolling shutter door, garage door, awning, water gutter), electronic appliances (computer chassis, computer panel), lighting, furniture, solar reflector, air conditioning duct and the like. At present it is still applied in many areas including electronic appliance, instrument, lighting, packaging and house decoration.
Q:As for graphite and aluminum sheet, which one has a better thermal conductivity?
Aluminum sheet has a better thermal conductivity, because metal is good conductor of heat, graphite is n't metal.
Q:What's the difference between non-backing aluminum foil and backing aluminum foil and what's the features?
Non-backing aluminum foil is the normal aluminum foil, a piece of foil, for example, the aluminum in a bottleneck of top-grade wine. There are tiny holes in the appearance and odor is easily to be leaked. But it is soft and can cover goods in any shape. Aluminum foil with backing: adding a film-like material in normal aluminum foil, for example paper to increase the strength and decrease the leak caused by the tiny holes in the appearence of aluminum foil. The most common example is the piece of thing in cigarette box.It ahs a good sealing performance, especially for odor. 20 years ago, I am the main operator of rough mill of aluminum foil. One machine costs more than 100 million and is with more than 170 kilowatt. It's a good experience of using it.
Q:is aluminum foil spacer poisonous after heating?
many baked food will use aluminum foil.
Q:What is the international standard of aluminum foil tape ?
Aluminum foil tape can be used for jointing all kinds of aluminum foil composite, sealing the piercing spot of insulation supporting pin and repairing breakages. It is widely used in air-conditioner, automobile, petrifaction, bridge, hotel and electronic industry and to the distribution department a must buy as the major raw and auxiliary materials for producing refrigerator and freezer. It can also be used as thermal insulation material.
Q:How to make aluminum foil paper?
A method to manufacture aluminum foil paper with forgery-proof watermark is made from paper pulp fiber. The production steps are as follows: Crash the pulp material with hydrapulper and beat with beater with beating degree of 20-70°SR and wet weight ≥0.5g; Add additives to the pulp: Filler 10-40%, sizing agent 1-8%, preservative 350ml/ton; Beating degree of 20-70°SR and wet weight ≥0.5g; Press the watermark net with die sinking, use watermark net at the vat of paper machine, reproduce the pulp into paper sheet with paper machine after being diluted, roll the sheet with calendar, slit the sheet into corresponding specification with slitter and then get the aluminum foil backing paper with forgery-proof watermark. The watermark of this invention is distributed uniformly, clearly visible as well as obviously rough and uneven in surface by touching, which has significant counterfeit effect, so it can be used to package the cigarette. Sovereignty item 1: A method to manufacture aluminum foil paper with forgery-proof watermark is made from paper pulp fiber. The production steps are as follows: a. Beating: Crash the pulp material with hydrapulper and beat with beater with beating degree of 20-70°SR and wet weight ≥0.5g; b. Composite pulp tank: Add additives to the pulp: Filler 10-40%, sizing agent 1-8%, preservative 350ml/ton; beating degree of 20-70°SR and wet weight ≥0.5g; c. Press the watermark net with die sinking, use watermark net at the vat of paper machine; d. Reproduce the pulp into paper sheet with paper machine after being diluted, roll the sheet with calendar, slit the sheet into corresponding specification with slitter and then get the aluminum foil backing paper with forgery-proof watermark; e. Composite aluminum foil with watermark aluminum foil backing paper to make aluminum foil paper with forgery-proof watermark.
Q:What is foil bags vacuum cooking?
Pasteurization of meat due to the heating temperature is low, the meat of the fiber is not damaged, and therefore fresh taste, nutrients well preserved; but because it only remove bacteria, there are still a large number of bacteria cause rotting meat, not only shelf-life short and can easily result in the loss of circulation.

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