aluminum foil for some application

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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.

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Q:When baking, what is the difference between aluminum foil and oil on paper?
The role of aluminum foil is heat and fast, even heat, so that the food will not be scorched, can prevent food grilled dirty oil tank at the same time, with aluminum foil wrapped food can be lost by reducing food and nutrition, water loss. So often when things oven with aluminum foil. But remember, the general will add lemon juice to enhance the flavor when baked, but citric acid will react with these metals, carcinogenic at high temperatures. So, you can add lemon juice after baking to eat.
Q:Does working in the aluminum foil companies harm the health?
Working in the production line of aluminum foil company is definitely harmful to health.
Q:What causes the pinholes of the aluminum foil?
Due to improved foil rolling conditions, particularly dust and rolling oil effectively filter and convenient roll changing system settings, the number of aluminum foil pinhole increasingly dependent on the metallurgical quality of the raw material and processing defects due to pinholes often defects in materials shedding, it is difficult to find the correspondence between the original defects.
Q:What's the use of aluminum tape?
Aluminum tape is made by applying adhesive on aluminum foil paper, thus it is an adhesive aluminum foil paper. Surely it can be used. Aluminum foil can be classified as common aluminum tape, conductive aluminum tape, high peel strength aluminum tape, reinforced aluminum tape, clip marine welding aluminum tape, aluminum tape for heater, etc., so the effects are different.
Q:What is called soft canned?
Insufficient retort: The volume of the bag is limited, capacity is generally 50 ~ 1000g. Loading slow, low production efficiency. High cost, applicability broad enough.
Q:How to classify aluminum foil according to shape?
Aluminum foil can be divided according to the shape of a roll of aluminum foil and a sheet of aluminum foil. Aluminum foil deep processing wool was rolled supply most, only a few handicraft packaging occasions with a sheet of aluminum foil. Aluminum foil can be divided according to the state of a hard foil, semi-rigid foil and soft foil.
Q:How to remove the oxide layer in the aluminum foil with a chemical process?
Generally, we adopt the method of alkali corrosion to remove the oxide layer on the surface of the aluminum foil.The purpose of alkali corrosion is removing the oxide layer on the surface of the aluminum foil. (Note: Technological process of the method is as follows: under normal temperature, 20% nitric acid; the process parameters is about 0.5 minutes. Pre-degrease--degrease--rinsing--rinsing--alkali corrosion--rinsing--rinsing--bright dipping--rinsing--rinsing--pure rinsing. The purpose of bright dipping is to remove surface residual black ash after alkali corrosion.Temperature:50-60 degrees; time:0.5-1 minutes.The purpose of degreasing is to remove grease on the surface of the aluminum foil.The process parameters is 0.5-1 minutes. You can use acid to wash it.
Q:What’s the use of aluminum foil glass wool felt ?
Aluminum foil glass cotton can absorb sound and shock. It is high-performance product with its sound absorption coefficient reaching 0.85. It also features high elasticity so as to reduce the shock from water flow. It has low heat conductivity and good thermal insulation. With low water absorption, bubbles on the dense surface can keep the water outside It also features fire resistance. When burning, it produces low concentration of smoke and does not burn. It has good workability and no harm to the skin and our health. It is nice-looking and can prevent the growth of mould.
Q:What kind of material does aluminum foil paper belong to?
Aluminum foil paper belongs to metal mixed material like alumina, which is a raw and auxiliary material for industry manufacture and mainly used for preventing package, articles for daily use and building.
Q:How to test the withstand voltage of capacitance?
Simple test:the two aluminium lead wire rolled up like the electrician high-voltage shaking unit(produce high voltage)and voltmeter and capacitance connected in parallel like revolving unit to the measurement and read the voltmeter. The voltage should be higher than withstand voltage. take the advantage of capacitance aluminium of restoring and measurement.

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