What's the difference between flexography, screen printing, plate printing, gravure printing?
Screen printing belongs to orifice plate printing. It is called four printing methods together with flat, convex and gravure printing. Hole printing includes transcription, mesh flower version, stencil printing and screen printing etc.. Printing the principle is: (a version of the base paper or other version of the film version of the ink can be made through holes) at the time of printing, through a certain pressure so that the ink to the substrate through the hole hole Edition (transfer paper, ceramics etc.) on the formation of images or text.
Flexo printing (flexography), often referred to as flexographic printing, flexo printing, use a way through the anilox roller transfer printing ink. Flexo printing, plates usually use thickness 1-5mm photosensitive resin version. Ink is divided into three major categories, namely water-based ink, alcohol soluble ink, UV ink. As the flexographic printing ink is in line with the green environment, it has been widely used in food packaging and printing, and has a bright future. Flexography belongs to the convex printing type.
As part of a lithographic printing plate on the graphic and non graphic part are almost at the same level, at the time of printing, in order to distinguish the graphic part so that ink printing or non text part, first by the water supply device to the printing plate component and part of the water supply, thereby protecting the nonimage areas without wetting ink. Then, the ink supply unit of the printing part supplies ink to the printing plate. Because the non - graphic part of the printing plate is protected by water, the ink can only be supplied to the printing and drawing part of the printing plate. The last is to transfer the printing ink to the blanket, and then use the rubber drum and nano imprint lithography drum pressure, the ink is transferred to the substrate, a printing, therefore, lithographic printing is an indirect way of printing.
Gravure printing is the process of engraving an image from a surface. In general, a copper or zinc board is used as a carving surface, and the recessed part can be corroded, engraved, copperplate or mezzotint, and Collographs may be printed in gravure. To print gravure printing, the surface covered with ink, and then use Tall Staw Bbu or newspaper to wipe the ink from the surface, leaving only the concave part. The wet paper is coated on the upper part of the printing plate. The plate and the paper are pressed by the press to transfer the ink from the concave part of the plate to the paper.
