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Aluminum Foil Bag

How to distinguish the quality of aluminum foil bag

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Author : zxpac
Update time : 2021-09-02 14:28:57
Printing quality of aluminum foil bag: see whether there are obvious three colors at the splicing of two colors. The higher the realistic level of the physical drawing, the better. See whether there are wire drawing, fog plate, blocking plate, missing printing, etc.
Material of aluminum foil bag: the packing bag shall be free of peculiar smell. Bags with peculiar smell generally make people feel that they do not meet the hygienic standards, and may also affect the normal use of bags. If there is no peculiar smell, it is necessary to check the transparency, clarity and impurity of the bag.
Firmness level of aluminum foil bag: the firmness of the bag is mainly divided into two types, compliance firmness and hot air firmness. Wuxi aluminum foil bags have different firmness levels due to different materials.
Firmness level of aluminum foil bag: the firmness of the bag is mainly divided into two types, compliance firmness and hot air firmness. Wuxi aluminum foil bags have different firmness levels due to different materials.
The main distinguishing method is to aim at the edge of the bag and tear it by hand.
The bag made of nylon and high-pressure film is usually difficult to tear by hand. It can be used to load heavier products such as stones and large particles, while the bag made of OPP heat sealing film is easy to tear and can only load some light products.
After the bag is torn, it depends on the shape and structure of the section. If it is torn evenly from the middle of the heat seal of the bag, it indicates that the heat seal of the bag is very poor and it is easy to break the bag in the production process.
If it is torn from the edge seal, it indicates that the heat seal quality is good; It also depends on the composite firmness of the bag. The method is to first see how many layers of structure there are at the crack, and then see if it can be separated by hand. If it is not easy to separate, it indicates that the composite firmness is good, otherwise it is poor.
In addition, check the firmness of the bag, and also see whether there are bubbles or wrinkles on the surface of the bag.
Appearance uniformity: first observe the stiffness of the bag. Generally, the higher the flatness, the better, except for the different needs of materials. For example, for a bag made of nylon and high-pressure membrane, the heat seal of the bag will be wavy; It is also necessary to observe whether the cutting edge of the bag is neat. The more neat, the better.

 
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