Requirements for metal materials of pillow packaging machines

In the packaging industry of pillow packaging machines, big children use metal packaging containers, which are one of the main packaging materials. U.S. packaging consumer metal materials are second only to paper, and Japan and European countries are second only to paper and plastic in the packaging materials consumed, accounting for the third. my country occupies the fourth place. Among the metal materials for packaging are mainly thin steel sheets of low carbon steel and sheets and foils of aluminum. Mainly used as packaging materials are: galvanized sheet steel, also known as white iron. It is hot-dip galvanized on the pickled thin steel plate, so that the surface of the steel plate is plated with a zinc protective layer with a thickness of more than 0,02 mm, which improves the corrosion resistance of the steel plate, and is used to make a metal packaging container. ②Tinplate, also known as tinplate. It is a thin steel plate coated with a corrosion-resistant tin layer, and then reflowed and passivated to improve corrosion resistance, has a certain strength, is easy to process and form, can be brazed, can be painted with paint, and has a bright appearance. As a large number of packaging materials, it is widely used in the food industry. At present, my country's current output is not much, which can not meet the needs. ③Aluminum foil, which is made of electrolytic aluminum with a purity of more than 99.5%, is made by rolling, and has a thickness of less than 0.2 mm. Generally, aluminum foil for packaging is used in combination with other materials as a barrier layer to improve insulation performance. There are four kinds of width ranges and 18 different thicknesses of aluminum foil for industrial use. 0.010, 0.012, 0.014, 0.016, 0.020', 0.025, 0.0300.040, 0.050, 0.060, 0.070, 0.080, 0.100, 0.120, 0.150, 0.200 (mm) aluminum foil is used as a pillow packaging machine packaging material, it has the following advantages: ( 1) Light weight, which is beneficial to reduce transportation costs, (2) It has metallic luster and is not easy to corrode, (3) It has good shading properties, and has high reflectivity to heat and light, and its reflectivity reaches 83~85%; ( 4) Good barrier properties, moisture-proof, airtight and fragrance-preserving properties, which can prevent moisture absorption, oxidation and volatilization deterioration of the packaging. Its moisture permeability is related to its thickness; (5) It has strong protection, so that the package is not easily damaged by bacteria, molds and insects; (6) It is stable in shape at high temperature and low temperature; (7) It has good mechanical resistance and can meet the requirements of automatic packaging. Mechanical use; (8) easy to process, can be attached to paper, plastic, etc., and easy to color; (9) non-toxic, not easy to cause pollution. Due to the above advantages, it is widely used in pillow packaging machines, generally used as composite flexible packaging and hard packaging. Due to the low strength of aluminum foil itself, it cannot be used for packaging products alone; As a result, its blocking ability is reduced, and these disadvantages should be considered when using it. Aluminum plate is a light metal, which is very stable in the atmosphere and has excellent processing performance, so it is used to make packaging containers.

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