Aluminum foil for package

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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 about rubber & plastic aluminum foil thermal insulation board?
1. With closed-cell structure preventing moisture outside, rubber and plastic aluminum foil insulation board has excellent moisture resistance (μ≥5,000) which serves as a built-in moisture-proof layer, thus an additional moisture-proof layer is not needed. Since the moisture resistance (μ≥5,000) is more than 3500 (ISO9346), the board itself serves as a built-in moisture-proof layer. So damage on products will not influence its overall moisture-proofness. Rubber & plastic serves as insulating layer and moisture-proof layer. 2. The thickness of rubber and plastic material is one third of any other thermal insulated materials. Therefore, it can save space above the ceiling and lift room height. 3. Characterized by excellent resistance to weather, aging, low/high temperature, dryness, moisture, ultraviolet radiation and ozone, rubber & plastic material will not be out of shape and need no maintenance. 4. With high elasticity, smooth surface, softness, rubber & plastic material can be intact, beautiful and slap-up without ceiling even if installed on irregular components such as bent pipes, tee-junctions or valves.
Q:What is aluminum foil tape?
Aluminum foil tape, the main use is its electromagnetic signal shielding performance, because it is widely used in PDA, notebook computers, LCD monitors and other electronic products where domestic electromagnetic shielding.
Q:What's the shiny alluminum foil?
Rubber resin ink industry generally adopts two kinds of rubber resin, namely, chlorinated rubber and thermopren. Natural rubber can be considered as shiny alluminum foil. Unmodified epoxy resin can be used as a light cover and aluminum foil coating.The epoxy resin can react with amine or reactive polyamide,organic acid,carbimide,phenol,aldehyde, melamine and formaldehyde resin to generate a soft film.
Q:What will happen when aluminum foil mirror is folded in half?
Aluminum foil is rolled aluminum sheets, similar to rolled aluminum foil sheets. As aluminum is soft and ductile, rolled aluminum sheets can be made into aluminum foil by pasting up on the offset paper using substances as sodium silicate. It can also be used for printing. As aluminum itself tarnishes easily with oxidization, friction and touches, it will not be used as covers of books and magazines that usually preserves long.
Q:Is aluminum foil rubber & plastic thermal insulated material expensive?
Aluminum foil rubber & plastic thermal insulated material is expensive. 1: Huamei B1 Aluminum Foil Rubber & Plastic Thermal Insulated Material 980 yuan/m³. 2: B2 Aluminum Foil Rubber & Plastic Thermal Insulated Material 550 yuan/m³, factory price 3: Shenzhou B1 Aluminum Foil Rubber & Plastic Thermal Insulated Material 9000 yuan/m³ 4: B2 Aluminum Foil Rubber & Plastic Thermal Insulated Material 550 yuan/m³. The above prices are from Internet and for your reference only.
Q:What are the classification of aluminum foil compound insulation material?
There are a variety of insulation materials with wide application. The commonly used ones include glass cotton products, heat insulation blankets and heat-insulated foam glass, polyurethane foam glass, etc. The glass cotton products are used in air conditioning insulation, duct insulation, polyurethane foams, extruded polystyrene board, molding of polystyrene, Bakelite resin, mineral fiber products, polyphenyl granule size, compound wood, soft wood, etc. Polyurethane foam is currently a kind of insulation material with minimum coefficient of heat conductivity of 0.018~0.024W/(m·k)in building insulation.
Q:How does laminated aluminum foil produced?
It's the salivate process. Pouring plastic melts into the aluminum foil when aluminum is reserving. Through multi-roll milling, a compound packing film with uniform thickness is produced.
Q:What's the aluminum-foil bag? What's the purpose of it? Is it poisonous? Can it be uesd in food industry?
Aluminum-foil bag is a kind of bag that using the ductility of aluminum and pressed by machine. There are some poisonous metal bags like external packing of capsule,capsule mounting and packing box of milk products.
Q:Does the aluminum foil belong to metal material
Yes.
Q:what do aluminum 613 and 615 stand for?size? material or producing craft?
They are just the model numbers, no other meanings.

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