The process principle of compound plastic bag printing-2

Composite plastic bag printing belongs to intaglio printing, intaglio printing is the image from the surface of the engraved concave plate-making technology. In general, copper or zinc plates are used for the surface of the engraving. Concave parts may be made by etching, engraving, etching, or a Mezzotint metal plate. Collographs may be printed in gravure.

Gravure roller in the process of rotation of the ink hopper to the plate, under the action of the ink scraper, scrape off the blank part of the ink. When the plastic film passes between the gravure drum and the imprint drum, the pressure between the drums is used to transfer the ink on the concave text and text part of the gravure drum to the primer. When the substrate passes through the drying oven, the solvent in the ink evaporates under the action of heat, and it enters the next unit in turn to complete multi-color printing. Due to the different depths of concave text on the plate, the depth of the ink layer can be accommodated is also different, transferred to the surface of the print, after the ink superposition to obtain thick, bright printing text and text.

We have learned about gravure printing, so we must know that before printing the composite bag, we must make a copper plate. The length and length of the copper plate are determined by combining the specific size of your bag. The copper plate is made for the plate-making company (so why do you need to pay the late fee before making the goods). If you have the plate, you can directly send it to us.