What Printing Techniques Are Used for Plastic Packaging Bags?

Directly from the plastic packaging factory, the colored printing plastic bags are printed during the production process. Next, let's take a simple look at its printing process. Hope this sharing by the editor is helpful to you! If you need to purchase plastic packaging bags and other products, feel free to contact Jinan Degao Plastic Co., Ltd., we are eager to assist you!

Prior to printing, a color separation plate-making process is conducted, which requires the creation of a white plate for underlay purposes, as well as corresponding color plates. This task can be executed within the electronic engraving system, and can also be planned in the pre-press system. Subsequently, the printing plates are directly engraved on the electronic engraving machine.

If printing on a unit printing machine, the detailed steps include mounting the plate, applying the fountain knife, preparing and mixing the ink, loading the roll, trial printing, adjusting, and then the official printing.

The lamination process for the colored plastic bags is carried out on a dedicated lamination machine. The final step in manufacturing the plastic bags is the bag-making process, which involves bonding two layers of film together to form a three-sealed plastic bag, and then cutting them into individual bags.