Aluminum foil for some use

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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.

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Q:Who knows how to choose aluminum foil coating?
Choose the brand lacquer. Recently, decoration pollution is often heard . Families worry about the entailing health problems after decorating their house. Therefore, while choosing lacquer, go through the following tips.
Q:What's the aluminum foil coiled material?
Metallic aluminum foil is characterized by moisture resistance, air tightness, thermal insulation, ultraviolet ray resistance, wear-corrosion resistance, etc. Made of aging-resistant butyl rubber, the self-adhesion layer is strongly cohesive.
Q:What is the material of aluminum foil roll?
There are two kinds of roll, divided heat roll and cold roller.The rolls used in common cold rolls include 9Cr, 9Cr2,9Crv, 8CrMoV and so on. The cold rolls require surface quenching and the hardness is HS45~105. Hot rolling rolls are commonly used materials such as 55Mn2,55Cr, 60CrMnMo, 60SiMnMo and so on. The hot rolling rolls are used in the processing of cogging, heavy plate and shaped steel. It's under the powerful influence of rolling force, severe wear and thermal fatigue, and hot roll work under high temperature, and allows the unit to wear within the diameter of workload does not require, so the surface hardness, only has a high strength, toughness and heat resistance. The hot rolling roller only adopts the whole normalizing or quenching, and the surface hardness demands HB190~270.
Q:Is aluminum foil an alloy or something?
With aluminum rolled into sheets of hot stamping material, the effect of stamping and silver foil stamping similar effects, it is also called the false. Because of its soft texture and good ductility, it has a silvery luster. If the rolled sheet is made of sodium silicate on the offset paper, the foil can be printed. But the aluminum foil itself is easy to oxidize and the color is dull, friction, touch and so on will fade. Therefore, it is not suitable for the long-term preservation of books, covers and other hot stamping.
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:How do microwave ovens use aluminum foil to bake chicken wings?
When microwave oven uses microwave gear, it is not allowed to have any metal substance in the container. Otherwise, a work will start the internal ignition and damage the microwave headIf you want to use the microwave oven barbecue, mini baking sheet, please use the light wave heating (remember). Aluminum foil is used to wrap the barbecue items. Grilled chicken wings, wrapped with aluminum foil to prevent live chicken wings, barbecue when oil splash, cause it is difficult to clean the microwave oven, and can prevent the scorched wings.
Q:The difference between pure aluminum foil bag and aluminized foil bag
if the two materials are shined under the light, the pure aluminum bag is transparent while the aluminized bag is silver white and the brightness of aluminum foil is weaker than the aluminized bag.when touching the two types of bag, the aluminum foil bag is a little hardness while the aluminized foil bag is soft and has the ductility.
Q:Aluminum foil thickening, car shade and silver cloth which good?
If the weather is very hot, the foil can be turned out to ensure the reflection of sunlight. In the purchase before the sun block, it is best to choose to take a sucker, the material should be more hard texture. "Light plate" or "too cheap" front sun block is not enough itself, it is easy to fall, so do not seek cheap. In general, there are brands of front sun block, packaging materials used better, there are special placement of suction cups, sucker is not easily squeezed. Worse brands, ten to one, a sucker is squeezed, and the remedy is to put it in boiling water for a while.
Q:Is aluminum tape toxic?
Aluminum tape is non-toxic. However, if the oxidation film on the surface of aluminum foil is damaged, aluminum element may deposit in the body and affect people's health. But it is not poisoned. Aluminum tape is widely used in refrigerator, air conditioning, automobile, petrochemical, bridge, hotels and so on. It uses quality pressure-sensitive adhesives (PSAs) and has various characteristics such as good stickiness, aging resistance.
Q:What is the aluminum foil?
A shielding film, with more in the electronics industry, to shield the disturbance effect, is the commonly used single blue aluminum foil,

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