packaging 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.

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:Which products are aluminum foil applied on?
Fourth, the electrolytic capacitor with aluminum foil The electrolytic capacitor with aluminum foil is a corrosive material working in polar conditions, the organizational structure of the aluminum foil have higher requirements, the use of aluminum foil is divided into three types: a cathode foil thickness of 0.015mm ~ 0.06mm; high-pressure foil thickness is 0.065mm ~ 0.1mm, high-purity aluminum foil production requirements; low pressure foil thickness of 0.06mm ~ 0.1mm.
Q:Is waterproof aluminum tape expensive?
Waterproof aluminum tape is not expensive. Its price ranges from 0.9 yuan to 5 yuan
Q:How to produce aluminized paper?
Q:How does the fireproof performance of alunimun foil?
The fireproof performance of alunimun foil is very bad, because the aluminum foil isn't pure aluminum.
Q:How to eliminate static in aliminum foil bag?
Aluminum foil bag can protect electrostatic sensitive components from electrostatic potential hazards to the highest degree. They unique four-layer structure can form an inductive cover to make things in bags isolate from static electric field. Furthermore, the inner layer is made low density polyethylene which can remove the static can avoid static generation inside the bag. This kind of hot sealable bag is translucence , so the good inside can be easily recognized outside and the product bar code can be read. It's mainly used in package of electronic elements and PC board. It can also be used in packaging industry.
Q:The difference between pure aluminum foil bag and aluminized foil bag
Aluminized foil bag and aluminum foil bag are both made by pure aluminum tablet.the pure aluminum is serve as the plastic film.the cost of metal aluminum used by aluminum foil bag is higher than the aluminized foil bag and the craft has obivious difference.as for the function and characteristic of aluminum bag, the material of aluminum bag has the advantages in barrier property,heat sealability, opacity,heat resistance,cold resistance,oil resistivity and fragrance-holding,poisonless and softness, which is quite suitable for the vacuum food(rice,meat,deli,ect.),electrical product(circuit board,electric product and electric cable). The package of precision equipment is aluminized foil bag,and the package is made of metal aluminum which has the funtion of light blocking and decoration.it is suitable for the tea leaves package.there are several methods to distinguish the aluminized foil and aluminum foil package.
Q:Does the aluminum foil tray is magnetic material?
The research shows that the external magnetic field of any material may be influenced more or less by magnetization.In accordance with the performance of magnetization,there are five kinds of materials:paramagnetic material,diamagnetic material,ferromagnetic substance,sub-magnetic material and diamagnetic material.Generally speaking, the magnetic material refers to the alloy which produces magnetic material directly or indirectly,like metal,cobalt,nickel,ect..Aluminum belongs to this kind of material.
Q:In which way does composite aluminum foil achieves heat insulation?
The features: the first aluminum foil layer(1), the second aluminum foil layer(3)and plastic film layer (2) bond together. Plastic film(2) is between the first aluminum foil layer(1)and the second aluminum foil layer(3). This utility model composite aluminum has good strength,toughness,shock resistance and high ability of acidproof and alkaliproof. It is also with property of gas insulation,thermal insulation,ultraviolet ray insulation and radiation protection.The outside two layers of composite aluminum foil is aluminum foil, which appearence is like the current monolayer aluminum foil and with the same property with it. It can save the material costs and is the ideal substitute of monolayer aluminum foil.
Q:What's the difference between aluminum foil paper and tin foil paper?
Tin foil paper is a filmed metallic paper coated with something like silver, such as the metallic paper used for cigarette packaging. The color is silver. aluminum foil paper is a metallic paper by bonding the slip sheet of aluminum foil and aluminum foil paste. It is used for food damp proof and packaging. Both can be used for cooking and package.
Q:How many applications does aluminum foil have?

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