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How to distinguish the quality of aluminum foil bags

How to distinguish the quality of aluminum foil bags 1, The printing quality of aluminum foil bags: see if there is an obvious third color at the splicing of the two colors, the higher the level of fidelity of the physical map, the better, and see if there are any phenomena such as drawing, fogging, blocking, and missing printing. 2Material of aluminum foil bag: The packaging bag needs to be free of peculiar smell. Bags with peculiar smell generally make people feel that they do not meet the hygiene standards, and may also affect the normal use of the bag. If there is no odor, you need to check the transparency of the bag, whether the clarity is uniform, whether there is any impurity, etc. 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 firmness. Wuxi aluminum foil bags have different levels of firmness due to different materials.The main difference is to align the edge of the bag and tear it by hand. The bag made of nylon and high-pressure film is generally difficult to tear by hand, and can be used to hold heavier products such as stones, large particles, etc.OPPThe bag made of heat-sealing film is easy to tear, and can only hold some light products; after the bag is torn, it depends on the shape and structure of the cross-section. Very poor, it is easy to break the bag during the production process; if it is torn from the sealing edge, it means that the heat sealing quality is good; it also depends on the composite firmness of the bag. See if it can be separated. If it is not easy to separate, it means that the composite firmness is good, otherwise it is poor; in addition, to check the firmness of the bag, it is also necessary to check whether there are air bubbles or wrinkles on the surface of the bag. 4, Appearance uniformity: first observe the stiffness of the bag. Generally, the higher the flatness, the better, except for the different needs of the materials. For example, for a bag made of nylon and high-pressure film, the heat seal of the bag will have a wavy shape; it is also necessary to observe whether the cut edge of the bag is neat, the more neat the better.

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