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:Are aluminum foil container poisonous?
Aluminum foil, with outstanding barrier properties, under the premise of a sufficient thickness of aluminum foil, substantially completely gas and moisture barrier, thus, in plastic flexible packaging materials, aluminum foil is commonly used as barrier material and a lightweight aluminum, and sealed package Overturn good range of benefits. Mainly health, beauty, but also holding on to some extent.
Q:What's the national standard for aluminum tape?
Aluminum foil tape with all the seams of the aluminum foil composite paste, the seal and insulation nails puncture wounds repair. It is the main and accessory material of refrigerator or freezer and also the necessary material for the sales department of thermal insulated material. Aluminum tape is widely used in refrigerator, air conditioning, automobile, petrochemical, bridge, hotels and so on. Products description With purity of more than 99.95%, aluminum tape can eliminate electromagnetic interference (EMI), isolate electromagnetic wave to human body harm and unnecessary voltage or current that may influence its function. In addition, Electrostatic discharge after the ground has a good effect . Since its material is polyesters fiber, it is not easy to be damaged or cracked after multi using or bending. Due to its strong adhesion and good conductivity, it can easily fit in the wire winding and be cut according to customer requirements.
Q:How about the specifications and prices of aluminum foil thermal insulated hose?
DPJ type. Structure and properties: metal hose coupler (4). DPJ external thread end-fitting metalized hose coupler is an extension of JB/GQ 0552 /83 D95-5 metal hoses. The metal coupler is made by die-casting zinc alloy material with zinc-plated, dull-polished or chromium-plated surface. It has a compact structure without pores and thus has a high strength. It is reliable in connecting and good in looking. DPJ metal coupler is end-fitting type which is used for connecting metal hose with the linear connector on the box. Adaptive metal hose: JS type, JSH type,JSB type and JSHG type. Inch thread metal hose coupler and metric thread metal coupler are recommended to use. Various non-standard metal hose couplers and special metal couplers are customizable.
Q:How to calculate the weight and length if knowing the width of single layer of aluminum foil,density, diameter of outside roll and diameter of inner roll?
You can calculate the volume by the external diameter, inner diameter and width. the weight can be known by the density and volume, then the weight and length canbe known too.
Q:What is the most important flaw of aluminum foil?
Pinhole major drawback of aluminum foil. Raw material, the upper roll, rolling oil, even to the dust in the air is about the size of 6μm enter the roll gap will cause pinholes, so 6μm foil pinholes is impossible, only the number and size of its evaluation. 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 aluminum foil coiled material?
Metallic aluminum foil is characterized by moisture resistance, air tightness, thermal insulation, ultraviolet ray resistance, wear-corrosion resistance, etc. Made of aging-resistant butyl rubber, the self-adhesion layer is strongly cohesive.
Q:The dark face of 8021 aluminum foil appears uneven rolling. What causes this and how to solve it?
The uneven rolling that you have mentioned is scratch or silvering. If it is scrath, this scrath may ba caused during the rolling process or the oil surface is scratched during the process of oil cleaning cut (finishing mill is single open book); Double open book in the process of finishing mill may also have a very small probability to cause rubbing scratch. If it is uneven rolling, it may be caused during the rolling process or the oil level exists silvering in the process of oiling(finishing mill is single open book). Seeing if it is cyclical since silvering is cyclical
Q:Is aluminum tape fire resistant?
It is used for fire resistance. Aluminum tape is made by pasting aluminum foil, glass fiber cloth and silicone paper with acrylate adhesive by using unique techniques. It is often used in thermal insulating and fire resistant surface of HAVC air-line system, sealing the puncture of bar for line and damage repairing of fire resistant aluminum foil glass fiber surface and thermal insulation of automobiles, train carriage and ship pipelines.
Q:which one, aluminum foil or tin does well in heat insultaion and with a lower cost?
There is no distinct difference between them in heat insultation. Aluminum foil is cheaper than tinfoil.
Q:Does the tin foil paper or aluminum foil paper can protect people from radiation?
tin foil paper has a good gloss finish and heat reflection.because of the protection of tinm foil paper,the cigerate doesn't change with the atimulation of outside world.more importantly, it will not change the smoke influenced by air and humid environment and the tobacco will not be deterioration since the expiration date has been longer.in addition, considering the heat insulation and beautiful design, there is platinum paper in the cigerate box.we may also use tin foil paper when having a barbeque.the paper is wrapped outside,making the food cooking well qiuckly with nice smell and no cold.the grilled lamb in the resturant also wrapped tin foil paper. tin foil paper can conduct the eletricity. it also has the function of heat insulation.in summer, the tin foil paper covers house roof ,which will reflect the 60% sunlight.besides, the space between the tin foil and the roof should have 150~200mm circulated air stratum.

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