How to Distinguish the Quality of Aluminum Foil Bags
1. Printing quality of aluminum foil bag: See if there is obvious third color in the splicing of two colors, the higher the realistic level of the physical image, the better. See if there are wire drawing, fog version, blocking plate, leakage printing and so on.
2. Aluminum foil bag materials: packaging bags need no odour. Smelly bags generally feel unhygienic and may affect the normal use of bags. If there is no odour, you need to check the transparency of the bag, clarity is uniform, there is no texture, and so on.
3. The firmness of the aluminum foil bag: The firmness of the bag is mainly divided into two types, which are in line with the firmness and the hot air fastness. The foil bag is different in level depending on the material.
4. The uniformity of the appearance: first observe the stiffness of the bag. Generally, the higher the flatness, the better, except for the different materials. For example, a bag made of a composite of nylon and high-pressure film, the heat seal of the bag will have a wave shape; it is also necessary to observe whether the cut edge of the bag is neat and tidy.