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Everyone must not be surprised. Aluminum foil bag refers to a kind of composite bag containing aluminum foil among composite bags. It is a packaging bag made of aluminum and other high-barrier materials after dry compounding. Aluminum has the characteristics of light weight and luster, weak reverse ability, poor barrier property, airtightness and water permeability, weak adaptability to temperature, stable shape at high or low temperature, weak shading property and excellent moisture resistance, therefore, the aluminum foil bag made from this has good functions of good moisture resistance, barrier, light avoidance, permeability resistance and durable appearance. At the same time, the aluminum foil bag is not limited by material on the packaging design, and can be customized according to the body. It can be made into various styles of packaging bags such as flat bags, three-dimensional bags, organ bags, etc. Let's follow Shanghai Yuhe Packaging to learn about aluminum foil bags.

With the above advantages, but the selection of aluminum foil bag is not static, is determined by the end use, packaging content, after processing technology, the use of environmental conditions, etc.. For example, the inner material of the aluminum foil bag used for packaging mustard and kimchi is PE. Because kimchi contains a certain amount of liquid and the storage temperature is around 0 degrees, PE is appropriate.. If it is steamed food such as meat products, the choice of external materials is more appropriate cpp.. There are also milk powder products with poor packaging, and the inner layer is also made of PE material.

In addition to considering the packaging itself, requirements such as stain resistance and impact resistance must also be considered.. If the packaging of meat products that do not require high-temperature cooking, it is not suitable to choose CPP, because CPP will become brittle at less than 10 degrees, and it seems that it is not suitable for packaging products that require low-temperature storage.. Similarly, PE has good low temperature resistance, but it may harden at high temperatures exceeding 65 degrees. Therefore, it is recommended to select modified heat sealing materials according to the conditions of use.

We also know that the thickness of the packaging bags used for different product packaging is different, which is determined by the nature of the product packaging. For products that require vacuum packaging, the thickness of the selected material is small. Because the smaller the thickness of the aluminum foil bag, the closer the packaging performance, the more able to meet the packaging requirements. Packaging costs are also lower.