can alufoil ALUMINUM FOIL

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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.

Alufoil 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.

Itthicker 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.

Aluminiumhas 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%.


Aluminium alloys with a wide range of properties are used in engineering structures. Alloy systems are classified by a number system (ANSI) or by names indicating their main alloying constituents (DIN and ISO).

The strength and durability of aluminium alloys vary widely, not only as a result of the components of the specific alloy, but also as a result of heat treatments and manufacturing processes. A lack of knowledge of these aspects has from time to time led to improperly designed structures and gained aluminium a bad reputation.

One important structural limitation of aluminium alloys is their fatigue strength. Unlike steels, aluminium alloys have no well-defined fatigue limit, meaning that fatigue failure eventually occurs, under even very small cyclic loadings. This implies that engineers must assess these loads and design for a fixed life rather than an infinite life.

Another important property of aluminium alloys is their sensitivity to heat. Workshop procedures involving heating are complicated by the fact that aluminium, unlike steel, melts without first glowing red. Forming operations where a blow torch is used therefore require some expertise, since no visual signs reveal how close the material is to melting. Aluminium alloys, like all structural alloys, also are subject to internal stresses following heating operations such as welding and casting. The problem with aluminium alloys in this regard is their low melting point, which make them more susceptible to distortions from thermally induced stress relief. Controlled stress relief can be done during manufacturing by heat-treating the parts in an oven, followed by gradual cooling—in effect annealing the stresses.

The low melting point of aluminium alloys has not precluded their use in rocketry; even for use in constructing combustion chambers where gases can reach 3500 K. The Agena upper stage engine used a regeneratively cooled aluminium design for some parts of the nozzle, including the thermally critical throat region.

Another alloy of some value is aluminium bronze (Cu-Al alloy).

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Q:Is there any way to prevent corrosion oxide coated aluminum coil?
Although color coated aluminum coil is widely used, but many companies realize such a problem, a long time will be pre-painted aluminum coil corrosion and oxidation, to solve this problem, what's a few suggestions may help you.
Q:Are the aluminum foil bag and the aluminum plastic composite bag the same thing?
They are different. the aluminum foil bag (antistatic bag,aluminum foil package bag) the facade of aluminum foil bag: transparent and silver white,barrier property,heat sealability,light prevention,heat resistance, cold resistance,frgarance holding;poisonousless,softness,ect.the stcucture of the product:PET/AL/PET/PE. the aluminum plastic composite bag has many advantages:low cost, beautiful prints;anti-static,ultraviolet-proof,moistureproof,oxygen partition,lightproof,cold-resistance,printing oil resistance,heat resistance,freshness preservetion and leakproofness.
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 kinds of package can use aluminum bag?
Q:What is the most important flaw of aluminum foil?
Although many types of defects in aluminum foil rolling, but in the end mainly as: A hole is characterized by a pinhole, roll eyes, slits, airway; to surface conditions characterized by oil, gloss uneven oscillation marks, tension lines, water spots, highlights bright spot; to processing procedures after the impact plate shape, wrinkling, discounts, bad winding; characterized by thick in size and poor. In essence, the unique aluminum foil pinhole defects only one category, several other defects plates also have different manifestations or severity only requirement is different.
Q:Overview of aluminum foil
Q:What kind of aluminum tape is used for producing refrigerator?
Aluminum foil is the basic material, applied with glue and added with a layer of plastic for improving its tensile strength.
Q:What are the key features and advantages of the aluminum foil food bags?
5, the production of aluminum foil material into the food bags to pack food non-toxic tasteless, health and safety in line with national health standards Aluminum foil material thickness between 70-180 microns, according to different purposes, the size of packaging products made into different processes, aluminum foil food bags long process trilateral envelope, self-reliance bags, zipper bags, standing zipper different craft bags, bags of yin and yang.
Q:Can aluminum foil be put in microwave oven?
No. The microwave produced by the microwave oven belongs to radio wave frequency band and is about 2500MHz. The features of this frequency band are as follows: 1) It can be absorbed by food and water to make the molecular react violently so as to produce heat. 2) It cannot be absorbed by plastic, ceramic and glass. 3) Metal can be conductive to electricity under the influence of the electric field of microwave. Since thick metal can resist the electric field of microwave and reflect microwave, the inner wall of microwave oven is made by thick metal. Similarly, putting a thick metal container in the microwave oven will make the metal container reflect microwave and thus make the food unheated. However, the electric conduction of thin aluminum foil may cause disastrous reaction. In the course of electric conduction, the temperature of thin metal will rise to cause a fire. At the same time, when met with heat, aluminum foil will shrink and its point will produce sparks which may ignite the combustibles in the oven.
Q:What's the difference between tin foil and aluminum foil?
They use different kinds of material.

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