Post-press processing technology refers to the treatment of printed products after they are completed. Surface processing is to improve the beauty and quality of packaging. It mainly includes film coating, polishing, UV, oil, bulging, crimping, calendering, hot stamping, embossing, punching, rounding, cracking, die cutting, indentation, folding, binding and other processing technologies.

Lamination is to apply transparent plastic film to the surface of printed matter through hot pressing or cold lamination. Its effect is more smooth and bright, the picture and text color is more colorful, and the surface is smooth, bright, waterproof, antifouling, wear-resistant, folding resistant and chemical corrosion resistant.

Hot stamping process, also known as hot press printing, is to make the patterns or words that need to be hot stamped into a convex version, and print all kinds of aluminum foil on the substrate with the help of a certain pressure and temperature, showing a strong metallic light, so that the product has a high-grade texture. At the same time, because aluminum foil has excellent physical and chemical properties, it can protect printed matter in book printing companies.

Spot, oiling and waxing process is a processing process to improve the high gloss and dazzling texture of printed products by locally coating UV varnish on the pictures and texts on the paper surface, so that the surface of printed products seems to be attached with oil ", also known as" oiling ". Glazing is to apply or spray a layer of colorless transparent paint on the surface of the printed matter to increase the luster of the printed matter and play the role of waterproof and oil stain prevention on the surface of the package. A layer of gloss oil or dumb oil on the surface of the printed matter is to protect the printed matter from water and scratch. At the same time, gloss oil can improve the brightness of the printed matter. Dumb oil can make the printed matter more high-grade and form a shiny film.

Concave convex technology is to make the paper surface form a three-dimensional effect higher or lower than the paper plane through the prefabricated engraving model and pressure. It can be divided into single-layer concave convex and multi-layer concave convex. Various embossed graphics and patterns show patterns of different depths, with an obvious sense of relief, which increases the three-dimensional feeling and artistic appeal of the printed matter.

Relief embossing came into the market with the emergence of laser engraving technology. Due to the three-dimensional visual effect, the visual effect of prints has been improved. Before the Chinese printers using the relief embossing process, the thickness and toughness of the paper should be considered first, because there needs to be a certain drop between the deepest and shallowest parts of relief embossing to show the three-dimensional relief effect

Die cutting indentation is also known as die cutting molding, knife buckle, etc. the die-cutting process can make the printed matter or other paper products into a die-cutting knife plate according to the pre-designed graphics for cutting, and roll the paper into a certain shape on the die-cutting machine, so that the shape of the printed matter is no longer limited to straight edges and right angles, but also can be used for hollow decoration.