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Before customizing food packaging bags, a necessary task is to print the patterns we have already designed on the surface of the packaging bags. Nowadays, the main printing methods used are gravure printing and flexographic printing. Of course, as customers, we do not need to understand the differences between these two types of printing. However, generally speaking, packaging bag manufacturers will recommend us to use printing methods that are suitable for ourselves. It is still important for everyone to have a simple understanding.

Customization of intaglio packaging bags is a direct printing method, which involves directly pressing the ink contained onto the surface of the packaging bag. In the case of flexographic printing, the elastic convex printing plate transfers the ink onto the packaging bag. So there are some differences between the two printing methods. Many people choose different colors when printing, and these contents must be highlighted during design, so that packaging bag customization manufacturers can know how to spray the image.

Because the food inside the packaging bag needs to avoid compression or vibration, when customizing the packaging bag, it is necessary to improve the quality of the packaging bag and not break it easily. Especially for some health packaged items, if all the air inside is extracted, some desiccants or deoxidizers can be placed inside to ensure that the environment in which the food exists is absolutely oxygen free. Food can be stored for a long time, and vacuum packaging bags are within the shelf life range. However, if the time is too long, some gases may be mixed in. In fact, this requires packaging bag customization manufacturers to be very advanced in technology when customizing vacuum packaging bags, to improve the sealing of the packaging bags. If their technology is very poor, it is easy to add some unknown gases into the packaging bags, and the packaging bags will lose their durability.