Characteristics of aluminum packaging materials

Aluminum is another major type of packaging metal materials besides steel.

In addition to its inherent excellent barrier property, air tightness, moisture resistance and shading of metal materials, it also has the following characteristics:

(1) Light weight.

Aluminum is a light metal with a specific gravity of 2.7, which is about 1/3 of iron. Therefore, aluminum packaging has the advantage of light weight and can save transportation costs.

(2) Good machining performance.

Due to its ductility and excellent drawing properties, aluminum cans are two pieces drawn at a time. Aluminum can be made very thin and can be packaged in the form of aluminum foil and aluminum plating.

(3) Aluminum does not rust in the air and water vapor, the surface is smooth and beautiful, do not need to gold plating is a protective layer, and after the surface coating can withstand acid, alkali, salt media.

(4) Odorless, odorless, do not affect the flavor quality of the packaging, coupled with the absence of sulfide and heavy metal pollution, which is particularly important for the packaging of food, pharmaceuticals and cosmetics.

(5) It is easy to recycle aluminum cans, which can be recycled and reused, thus reducing costs and energy consumption.

At present, the main dispute on aluminum packaging in the international market is that the production energy consumption of aluminum is too high, which increases the packaging cost.

The solution to this is to strengthen the recycling of aluminium cans.

Because aluminum packaging has a series of advantages, so now the application of aluminum packaging is in the ascendant.

Aluminum used in packaging is mainly used in three forms: aluminum plate, aluminum foil and aluminized film.

Aluminum plate is mainly used to make aluminum packaging containers, such as cans, basins, bottles and hoses.

Aluminum foil is used to make the barrier layer of multi-layer composite packaging materials, and the aluminum foil composite film is used for food packaging (mainly soft packaging), cigarette packaging, medicine, detergent, cosmetics and other packaging.

Aluminized film is another form of composite material, which is a new type of composite flexible packaging material, it is a special process in the packaging plastic film or paper surface (single or double) coated with a very thin metal aluminum.

This aluminized film composite material is mainly used for vacuum packaging of food, such as fast food, snack, meat and agricultural products, as well as packaging, decoration and trademark materials of cigarettes, medicine, alcohol and cosmetics.

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