How to solve the problem of aluminum foil bag expansion

January 24, 2023

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Products stored in aluminum foil bags generally have a short shelf life under natural conditions, and need to rely on vacuum or aluminum foil bags to extend the shelf life. However, aluminum foil bags sometimes swell due to various reasons, so how to solve it?First, the aluminum foil bag itselfOne of the important reasons for the expansion of aluminum foil bags is their own quality problems.The first is the airtightness of the aluminum foil bag. Bag sealing is the last process of bag making. If the final edge is not closed tightly, it will cause air leakage in the food aluminum foil packaging bag. Gas may seep into the plastic packaging bag from the leaking position of the aluminum foil packaging bag, causing the bag to bulge.For the swollen bag caused by this reason, it is necessary to adjust the production parameters and control the heat-sealing strength during production. After the heat-sealing is completed, an instrument should be used for testing. If bubbles are found protruding from the edge of the packaging bag, it means air leakage and needs to be remade. .Secondly, because the aluminum foil bag itself has metal properties, it is prone to wrinkles during storage and use, which will cause small holes in the bag, and the aluminum foil bag will leak. Therefore, during storage and use, pay attention to the placement of the aluminum foil bag to avoid wrinkling and folding.2. Food spoilageAnother important factor for air leakage in food aluminum foil packaging bags is food deterioration. If the food is not sufficiently sterilized during the production process, or the aluminum foil bag is filled with liquid, long-term storage will cause bacteria to multiply and produce gas, causing the aluminum foil bag to expand and the food inside to deteriorate.

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