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:What's the difference between aluminum laminated films and aluminum foil film?
Aluminum laminated film is thin film like PP and PET steamed by vacuum and then coated with aluminum. Aluminum foil film is a film that is compounded by aluminum foil and plastic film. The alumimum coated layer is very thin with the thickness of 300-400 angstrom while the thickness of aluminum foil is about 0.01mm.
Q:What are the brands of aluminum foil coiled material?
ATL aluminum coil (film) self-adhesive waterproof coil. ATL aluminum coil (film) adhesive waterproof coil is a thermo printing material by calendering aluminum into a plate. Its thermo printing effect is similar to that of silver coil thermo printing, thus it is also called fake silver coil. Because of its softness, malleability and silver gloss, the calendered plate can be processed into a aluminum foil plate by pasting something like sodium silicate on the offset paper and also can be printed. However, since the color of aluminum foil may dark as a result of oxidation or fade due to friction or touching, thus it is not suitable for thermo printing long-preserved book cover.
Q:What are the characteristics of aluminum foil?
(6) as an opaque aluminum foil packaging material, so the sun rays of products, such as margarine is a good packaging material. (7) Al foil has good plasticity, it can be used to package products of various shapes. It may result in any of various containers. (8) aluminum foil hardness, tensile strength is also large, but its small tear strength, so easy to tear.
Q:How does the fireproof performance of alunimun foil?
The fireproof performance of alunimun foil is very bad, because the aluminum foil isn't pure aluminum.
Q:What causes the velocity effect of the aluminum foil?
1, the state of friction between the work rolls and the rolled material changes, with the increase of the rolling speed, into the amount of lubricating oil increases, so that the lubrication between the rolls and the rolled material changes. Reduced coefficient of friction, film thickening, followed by thinning the thickness of aluminum foil.
Q:What's the difference between PET gold card paper and aluminum foil gold card paper film?
Aluminum foil gold card paper is used in base materail(paperboard) 1:It is easy to compare the appearance when you know the making process. Aluminum foil is made by pressing vaporized aluminum into slice and then print or thermoprint. Stick to PET thin film and shake it under ray of light. You will find that it is highly reflective. 2: Burning test: PET belongs to transparent plastic. PET gold card paper and aluminum foil have different appearence and making process. 3.PET gold card paper is printed on base materail(paperboard) previously,however, some printing layer don't have good reflective performance. PET thin film is very bright. When aluminum foil gold card paper burn to a cinder, the remained metal aluminum foil is thermoprinted. PET gold card paper can be burned into cinder totally. Aluminum foil is with metallic lustre.
Q:The advantages of food aluminium foil
The surface of aluminium has the characteristic of anti-gloss and the layered structure can absorb the light and has the characteristic of opacity,isolation. The aluminium layer has the grease resistance and the softness like the plastic bag. the aluminium bag is poisonousless and free smell. It is the green product and fridenly to the environment. It is qulified for the national hygienic standard.
Q:The development and the market situation of aluminum foil packaging.
Aluminum foil packaging development substantially synchronized with the entire industry in the Chinese market, faster development of aluminum foil packaging, mainly for two reasons: first, Chinese flexible packaging market development and the gap between developed significantly, the proportion of small flexible packaging consumer goods and food, developed countries accounted for more than 65%, and some have more than 70 %, while China accounts for about 15% share of the past two years, a rapid increase; second, domestic plastic composite, aluminum foil composite technology continues to mature, lower production costs, to promote the popularization and application of aluminum matrix composites in the Chinese packaging market.
Q:Is aluminum foil paper heat-proof?
Yes, it has certain effect on heat insulation because aluminum foil has high radiant reflectance and can reflect some of the solar radiant. However, it’s not practical due to the complicated construction and being easy to be damaged. You can consider using thermal insulation coating which has advantages of simple construction, obvious effect and long service life and doesn’t need special maintenance in latter period.
Q:Does aluminum foil bag have property of X-ray proof?
Lead is the best material of property of X-ray proof.

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