Aluminum foil for lidding

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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:How can aluminum foil classification?
Second, according to the shape Aluminum foil can be divided according to the shape of a roll of aluminum foil and a sheet of aluminum foil. Aluminum foil deep processing wool was rolled supply most, only a few handicraft packaging occasions with a sheet of aluminum foil.
Q:What color coated aluminum coil is?
Color coated aluminum coil refers to the surface of an aluminum coloring process, color coated aluminum coil has become one of the most popular decorative material top. It is a kind of green environmental protection, durability and aesthetic characteristics.
Q:What's the specific gravity of aluminum foil?
The specific gravity of aluminum foil is in the same with that of aluminum ingot, which is 2.7t/m^3 and slightly different according to different aluminum foil material.
Q:Why the aluminum sheet crack after?
Maybe the crack existed during welding but you didn’t notice. And then it expands and becomes obvious when acted on by external force in circling process. The reason may be the welding craft. Besides, I suggest more comprehensive tests after welding, such as penetrant test.
Q:What's the result after mistakenly eating the aluminium package when taking the pill?
If you have the digestive tract symptom like abdominal distention,I suggest you should go to hospital to have a check to see.Watch the excrement if you have no symptoms after mistakenly eating the aluminium package. If you have abdominal pain……
Q:Waterproof aluminum foil and PVC for cupboard, which is better?
Waterproof aluminum foil is usually used in cupboard while PVC is rarely used. PVC is usually used in commode. But it's better to use PVC for cupboard. Aluminum foil paper may easily soak and damage the cupboard due to its good waterproofness if water seeps into it, so it is better to paste a whole piece of waterproof aluminum foil paper without interface through which water may seep into the cupboard. Since aluminum foil paper is an additional layer on the moisture proof particle board, it is not moisture proof and waterproof enough and thus outdated. Whether PVC board can be used for cupboard depends on manufactures. Some just use it as an advertising gimmick while some use it for cupboard bottom. Surely the latter one is more durable. Cupboard is the place that contains most water and connects with sewer.
Q:How to level the aluminum foil with the thickness less than 0.1? Dose the stretch bender useful?
The technological parameter of stretch bending has casting gap. your problem should be solved from the casting gap and extention control(especial the exit test) .when having the stretch bending design,the thickness of material should have the relation to the diameter of working roll and the thickness should be thinner 0mm.05mm--1.the diameter of working roll of our plant is 16mm.
Q:Does reflective coating of aluminum-foil paper can be pasted to the glass?
Reflective coating of pure aluminum foil has a low heat conductivity coefficient,high heat transfer rate. Staple bolt is easily to be penetrated. Staple bolt penetrates reflrctive coating and rapidly recover after meeting high temperature.The heat energy of place where staple bolt penetrates can reflect the roof,making the construction easier and more efficient. The drape is easily to be flattened. Crease lines can influence the effect.Using reflective coating of common mirror,adopting PAP aluminum-plastic slice and staple bolt easily to be penetrated
Q:How to remove the fingerprint and glue residue on the color aluminum coil?
Try to use essential balm. We often use the essential balm to remove glue residue on the stainless steel bowl and basin.
Q:Who knows the price of 3m conductive aluminum foil tape?

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