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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%.

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Q:What's the price of aluminum foil fireproof thermal insulated tile?
The following information are for your reference only. 1. Hengfeng aluminum foil corrosion-resistant thermal insulated tile, thermal insulated tile, composite aluminum foil tile, aluminum plastic tile, fireproof energy-saving tile. The price is about 38 yuan. 2. Bnagte fireproof aluminum foil cloth, roof color steel tile, thermal insulated sun-proof thermal insulated film/board. The price is about 4 yuan. 3. Nano environmental and energy-saving tile, aluminum foil, thermal insulated soundproof and fireproof tile used in chemical plant, pig farm, chicken farm. The price is about 32 yuan. The above prices are from Internet and for your reference only. Prices may vary according to specific circumstances.
Q:How about rubber & plastic aluminum foil thermal insulation board?
Featured by softness, flexibility, resistance to low/high temperature, fire resistance, waterproofness, low heat conductivity coefficient, shock absorption, sound-absorbing and other excellent properties, rubber & plastic aluminum foil thermal insulation board is widely used in cold and hot pipes and containers in central air conditioning, construction, chemical industry, textile, metallurgy, communication, vehicles, electrical appliances and other industries to reduce cold loss and heat loss.
Q:what do aluminum 613 and 615 stand for?size? material or producing craft?
They are just the model numbers, no other meanings.
Q:What's the application field of aluminum foil?
Aluminum foil can be used to roast fish and meet, pack dim sum and snacks, reserve leftovers, decorate items and clean.
Q:What is 1235 aluminum foil
Aluminum foil is the thin aluminum sheet which is widely used in the package of drug capsule and the milk seal. The 1235 aluminum foil brand number is the model number.
Q:How many applications does aluminum foil have?
Q:Introduction of aluminum foil
Friction. Hiphotos. Aluminum foil is a kind of thermoprinting material made by calendaring aluminum into sheet, Whose thermoprinting effect is similar to that of silver foil.
Q:Why continuous annealing aluminum foil production process?
Annealing is to make aluminum foil becomes soft, soft, malleable aluminum foil like, if not annealed, rather hard to pull off aluminum foil and other unexpected problems likely to occur in the rolling process. So after each rolling aluminum foil should make another annealing process, so as to ensure that the aluminum foil in the following rolling process smoothly.
Q:How to classify air conditioning aluminum foil?
5.hydrophobic aluminum foil Hydrophobic aluminum foil, aluminum foil, also known repellency, surface properties and hydrophilic aluminum foil opposite. That is when the condensed water to condense the aluminum foil surface of the foil into the contact angle larger, general at 75. the above. The greater the angle, the better the water repellency. Using the same ultimate goal of hydrophobic and hydrophilic aluminum foil, that no condensate remains in the heat exchanger between the sheets. Except that, hydrophobic foil is through increasing the contact angle of the condensate and heat transfer sheet, the condensed water is easy to slip off the water bead is formed between the heat transfer sheet to achieve the removal of condensed water purposes.
Q:How to calculate each square meter of aluminum foil?
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.

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