Aluminum foil bag is more and more widely used in food packaging. An aluminum foil bag is a bag containing aluminum foil in composite materials. The wide application of aluminum foil bag is related to the material characteristics of the aluminum foil itself. Now let’s check out the advantages and disadvantages of aluminum foil packaging bags. Advantage Of Aluminum Foil Packaging The biggest advantage of aluminum foil in aluminum foil bags is that it can block oxygen and moisture very well, and the water permeability is 1, so it is a good barrier material. In addition, the aluminum foil in the aluminum foil bag has good heat resistance, good light reflection and luster, good shape at high and low temperature, suitable for high-temperature cooking, and can withstand up to 125 ℃. However, as the material itself, the aluminum foil in the aluminum foil bag also has its own limitations. First of all, the biggest disadvantage of aluminum foil is that it is brittle and easy to break. It’s hard to compound. 1. Keep the color, fragrance, taste and shape of food. A high-temperature cooking aluminum foil bag can meet the sterilization requirements in a short time, and preserve the original color, aroma, taste, and shape of food as much as possible. 2. High temperature cooking aluminum foil bag is easy to use. It can be opened conveniently and safely. When eating, the food can be put into boiling water together with bags and heated for 5min to open for eating, even without heating. 3. The storage time is long. The food packed in a steaming bag has a stable shelf life and no need of refrigeration or freezing. It can be compared with a metal can and is convenient for sale and family use. 4. Convenient storage and transportation. The cooking bag is light in weight and can be stacked for storage, which takes up less space. After packaging food, it takes up less space than metal cans, which can make full use of storage and transportation space and save storage and transportation costs. 5. Easy to sell. In addition, the high-temperature cooking aluminum foil bag has reflective luster, and the color printed on it is more bright. Due to the exquisite decoration, the sales volume is greatly increased. Disadvantage Of Aluminum Foil Packaging The biggest disadvantage of aluminum foil is poor acid resistance, so when packaging fruit juice or acid articles, it is generally not placed in the inner sealing layer, so as to ensure that it will not be separated by acid penetration. Moreover, it has no heat sealing property and can not be used as the innermost layer of the composite bag.