Aluminum foil lidding for

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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:Aluminum foil tape or copper foil tape, which is better at shielding?
I should say they have equal shielding abilities. But as aluminum is more likely to oxidize than copper and not easy to be soldered, copper foil tape is preferred in most of the cases. Electromagnetic shield means using elements made of conductive or ferromagnetic materials to screen at the end of stator core of a large turbo-generator, reducing additional loss and local heating in parts caused by flux leakage at the end of stator winding. In terms of communication, screening is to segregate two spaces to prevent electric field, magnetic field, and electromagnetic wave of one area from reacting to or radiating the other one. To be detailed, screening will encompass interference source that influences components, circuit, assembling, cable or the overall system.
Q:Performance of aluminum foil and how does it insulate heat? Describe it precisely and in detail and better give the source
Aluminum foil can’t insulate heat by itself but it has strong conductivity for heat. Its function is to reflect heat source.
Q:Find a weld and riveting machine to connect the two roll of aluminum together. the width of aluminum is 40-60cm,because the surface of aluminum has a layer of oxidation film,so...
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.
Q:What's the application of aluminum foil thermal insulated hose?
Aluminum foil thermal insulated hose is used in ventilation system and air supply system. For example, it is by using various air hoses, including aluminum foil thermal insulated hose that cold & warm wind produced by the central air-conditioning are delivered to each room in a building.
Q:Is waterproof aluminum tape expensive?
Not expensive. Thickened and waterproof aluminum tape, tin foil paper, radiation resistant, 25 meters/volume. Widened and thickened, radiation resistant, high-temperature resistant, ¥15. High-temperature resistant aluminum tape, waterproof aluminum tape for sealing water pipes, smoke exhauster, tin foil tape for tinkering, ¥9.8. Thermal insulated aluminum tape for installation of central heating and smoke exhauster, high-temperature resistant, thermal insulated, sealed packing, waterproof shielding tape, 4.8cm, 18 meters/volume, ¥9. Ganchun aluminum tape, tin foil paper, waterproof material for sealed packing, aluminum tape, 6cm, ¥10. Xinyue aluminum tape, tin foil paper, waterproof and radiation resistant material for sealed packing, pitted surface 4.8cmx20yd1¥14.
Q:How does aluminum foil tube specifications can be classified?
It's my pleasure to answer your queations. It can be divided into food grade pu and texture silica gel material. Specification of pu steel wire hose: Stainless steel hose manufacturer to reduce production costs and enhance the competitiveness of the hose, they usually use 212 rolled steel to replace 304 stainless steel to process production. Due to the quality of stainless steel pipe's heavy quality, not easy to bend, easy to produce retention, it is not easy to use. So that lighter pu texture that can meet the requirements of food grade is more favored by the customers. Pu texture food grade tube adopts food grade PU texture and high temperature extrusion process, taking stainless steel wire as skeleton. Hose is light, flexible and smooth inside and outside, which can prevent microbes from breeding. The diameter of hose varies from 25 mm to 100 mm, fully meeting the needs of various industries. It can be widely used in food processing, beverage, drinks, fruit juices, edible oil, spices and other industries.
Q:What's the meaning of 13*18 4 of aluminum bag
The width should be shorten 1-2CM,the self-styled self-reliance aluminum foil bag should be 13cm*18cm+4cm.the calculation of length should be shorten 2,including the pressing seal.
Q:Can aluminum foil replace copper foil?
You mean the static electricity isolation layer in transformer. Yes, it can do that. Be careful and don't make it short circuit. It also can be used in other operating layers, but you should be careful in calculating electric current density.
Q:How to remove the oxide layer in the aluminum foil with a chemical process?
Aluminum is easy to react with oxygen in the air, so even if you remove the aluminium oxide in the surface, it will soon be oxidized again.
Q:How to do with damage in aluminum foil packing for lithium battery?
It is recommended to disuse the battery, because it may explode or catch fire. Currently the maximum capacity for mobile phone battery is about 2000MA/H, so the capacity of 5400MA/H is exaggerating. However, it is not easy get an extra copycat battery.

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