Aluminum material in the packaging of Industry - Aluminum Material, Packaging - Printing Industry

Aluminum material in the packaging of Industry - Aluminum Material

, Packaging - Printing Industry

Aluminum is a rich white light metal, second only to the world's aluminum production Steel . It Package Industry accounted for in the first non-ferrous metals. Aluminum as a packaging material, the general use of aluminum, aluminum block and aluminum foil and aluminum films. Aluminum is usually covered as canning material or material system; aluminum block used to make extrusion and thinning drawing forming tank; aluminum foil used for general production of moisture within the packaging or other composite materials and flexible packaging.

Packing boards are rust-proof aluminum, manganese and magnesium from the increased strength of the material mainly to improve the processing performance such as the role; copper can increase the material strength, but also reduce the inch loss properties and processability; added zinc, in particular, is with the copper, magnesium inch joined the same day, its treatment effect changed for the better, but the corrosion resistance and workability will decrease; silicon is mainly the addition of lower melting point of aluminum to improve strength and melt flow, reduce coefficient of thermal expansion. By the thickness of aluminum foil 0.4-4) .7 mm (more with 0.5mm) of industrial pure aluminum after repeated thinning made of cold rolled metal thin flexible material.

1. Aluminum material characteristics Compared to other packaging materials, aluminum material has the following advantages:

(1) the density of aluminum is very small, as 2.7g/cm, only 35% of steel. This makes it easy to implement lightweight container. Aluminum surface can naturally generate a dense aluminum oxide film layer of colorless film that prevents further oxidation.

(2) aluminum non-toxic tasteless, compliance packaging Food Standards of hygiene.

(3) aluminum surface gloss, easy-to-color printing effect is good.

(4) made by the aluminum easy-open lid open is better than tinplate easy open end.

(5) aluminum light and heat reflectivity performance and transmission performance, can improve food canned heat sterilization and the effect of cold.

(6) The mechanical properties of aluminum at low temperature can be maintained, especially for frozen food packaging.

(7) with aluminum foil composite film made completely airtight and opaque, which can effectively protect the contents of food. Aluminum plastic composite film can increase the strength.

(8) waste, recyclable, can not only save energy but also to prevent waste caused by pollution, to meet Environmental protection Requirements.

Aluminum material but also some disadvantages, including:

(1) aluminum tinplate and TFS production is relatively much energy, so the price of your side.

(2) aluminum non-magnetic material, so the original use of magnetic devices must learn to transform raw materials.

(3) poor corrosion resistance of aluminum material, should not be used to contain acidic, alkaline and salt content of many foods.

(4) aluminum soft texture, low intensity compared with the tin, easy to manufacture and transport, deformation due to collisions, surface scratches and so on.

(5) aluminum welding difficulties, so can only be used to manufacture stamping or gluing.

Currently available combined with other materials to make up for some shortcomings of aluminum. For example, the aluminum foil with paper or plastic compound, increase its stiffness and tensile strength; To overcome the shortcomings of low stiffness of thin-walled aluminum cans can be filled in a closed container until a small amount of liquid nitrogen, liquid nitrogen can increase the internal pressure generated by vaporization stiffness and compressive properties of the container; by the nitro cellulose and modified polyolefin coating of aluminum foil, not only to improve the chemical properties of aluminum foil to maintain a good print appearance, but also provides heat to the joint nature.

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