What are the common processes of packaging printing?

Indentation is to use a concave template (negative template) to imprint the surface of the printed matter into a depressed relief pattern (the printed matter is partially depressed, which makes it three-dimensional and causes visual impact. ) is called indentation. Can increase the three-dimensional sense, suitable for papers over 200g g, special paper with high gram weight and obvious mechanism, and better effect with bronzing, local UV and other processes. If the concave template is heated and applied to special hot melt paper, it will achieve extraordinary artistic effect. Embossing is to leave a complete version of the grain texture on the surface of the paper by pressing a metal cylinder with grain, and realize the effect of special grain paper with ordinary coated paper, which is decorative and unique in style. There are dream stones, pearls, coarse cloth, fine cloth, crescent moon, sands, felt, leather, pears, caimi, stripes, gold thread, Lenny thread, pottery thread, woven thread, gold leaf thread, bamboo thread and so on.