How to distinguish the quality of aluminum foil baking mix packaging bags
Baking mix packaging is widely used in our life, so the safety of stand up packaging aluminum foil bag is very important, then how to distinguish the quality of food packaging bag? Let’s look at it together.
1. Baking mix packaging aluminum foil bag printing quality: see whether the two colors of the splicing at the obvious third color, the higher the fidelity of the physical map, the better, to see if there is drawing, fog version, blocking version, missed printing and other phenomena.
2. Aluminum foil bag materials: stand up packaging bags need no odor. A scented bag generally feels that it does 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, there is no sense of impurities, and so on.
3. The solid level of aluminum foil food packaging bag: The firmness of the bag is mainly divided into two, in line with the firmness and hot air firmness. Wuxi aluminum foil bag has different firmness levels due to different materials.
The main method of differentiation is to tear it off at the edge of the stand up packaging. The bags made of nylon and high-pressure film are generally difficult to tear because they are torn by hand, and can be used to hold relatively heavy products such as stones, large particles, etc., while the bags made of OPP heat sealing film tear well and only Put some light products; After the bag is torn, it depends on the shape and structure of the cross section. If it is evenly torn from the middle of the heat-sealed part of the bag, it indicates that the heat sealing of the bag is very poor and the bag is easily broken during the production process; Edge tearing, indicating that the heat seal quality is better; also look at the bag’s composite firmness, the approach is to look at the crack at a few layers of structure, and then you can see if you can separate it, if not easy to separate, then explain The firmness of the composite is good, and vice versa; in addition, the firmness of the bag is checked, and at the same time whether the bag surface has bubbles or wrinkles.