Aluminum foil color printing advantages and disadvantages

Aluminum foil color printing bag As the name suggests is a composite material containing aluminum foil bag. Aluminum foil bags are widely used, which is related to the material characteristics of aluminum foil itself. The great advantage of the aluminum foil in the color printing bag is that it blocks oxygen and water very well, and the water permeability oxygen permeability rate is 1, which is a good barrier material. In addition, the aluminum foil in the aluminum foil bag has good heat resistance, good light reflection and gloss, good shape at high and low temperatures, suitable for high temperature cooking, and high resistance to 125 degrees Celsius. However, as the material itself, the aluminum foil in the aluminum foil bag also has its own limitations.

First of all, the great disadvantage of aluminum foil is that it is very brittle and easy to break. It's harder to get back together. Secondly, the big disadvantage of aluminum foil is poor acid resistance, so the packaging of juice or acidic items is generally not placed in the sealing layer, so as to ensure that it will not be acidic penetration and separation. In addition, no heat sealing, can not be used as the inner layer of composite bags.