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How to distinguish the quality of aluminum foil bag
- How to distinguish the quality of aluminum foil bag
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How to distinguish the quality of aluminum foil bag
aluhm > 03-22-2018, 09:45 AM
1, aluminum foil bag printing quality: to see if there is a third color obvious stitching two colors, vivid picture of the level as high as possible, to see whether there is a wire drawing, fog, blocking version version, stencil and other phenomena.
2, aluminum foil bag material: packaging bags need no odor. Odorous bags generally make people feel that they do not meet hygiene standards, and may also affect the normal use of bags. If there is no odor, it is necessary to check the transparency of the bag, whether the clarity is uniform, whether there is impurity feeling and so on.
![[Image: 1-1G02509331Jc.jpg]](http://www.aluminiumplatesupplier.com/uploads/allimg/171025/1-1G02509331Jc.jpg)
3, aluminum foil bag firmly level: bag firmness is mainly divided into two kinds, accord with fastness and hot air fastness. Tin aluminum foil bag bag because of different material, so solid level is also different.
The main distinguishing method is to rip the edge of the bag by hand. Nylon membrane and high pressure composite made of general bag by hand is very difficult to tear can be used to hold heavy products such as stone, large particles, and OPP heat sealing film bag making good tear, can only be installed in the lighter products; bag, to see the shape and structure of the cross section. If it is from the middle bag heat sealing the uniform heat sealing bag torn, that is poor, easily broken in the production process; if it is from the edge off and that the heat sealing quality is better; but the bag composite fastness method is the first to see a few layer structure crack, and then see if you can get by hand it is not easy to separate, if separated, the composite good fastness, and vice versa; in addition, firm level test bag also see whether there are bubbles or fold the bag surface.
4, the appearance of the neat degree: first to observe the stiffness of the bag. The higher the roughness, the better, but because of the different needs of the material except. For example, nylon and high pressure membrane composite bag, bag heat seal will have wave shape; also need to observe whether the trimming of the bag is neat, the more tidy the better.