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Packaging and printing technology and post press process are fully announced

release date: Source: China good packaging browsing times: 7667 copyright and disclaimer

core tip: packaging and printing technology is mainly divided into six categories: flexographic printing, relief printing, gravure printing, lithography, silk printing, and digital printing

packaging printing, also known as packaging decoration printing, is the printing of various packaging materials as the main products, which refers to printing decorative patterns, patterns or words on the packaging to make the products more attractive or more illustrative

at present, packaging printing technology is mainly divided into six categories: flexographic printing, relief printing, gravure printing, lithography, silk printing and digital printing

flexographic printing

the printing plate of flexographic printing generally adopts a photosensitive resin plate with a thickness of 1mm-5mm. Because the ink used in flexographic printing conforms to green environmental protection, it has been widely used in food packaging printing at present, and has a broad prospect

lithography

the market environment of fair competition in lithography is also called offset printing. The graphic and non graphic parts of the printing plate keep the surface level, and the graphic and non graphic parts are covered with a layer of greasy oil film, while the non graphic and non graphic parts absorb appropriate moisture

when applying ink, the graphic part repels water and absorbs ink, while the non graphic part absorbs water and forms an anti inking effect. Because the method of lithography is simple in work and low in cost, it has become the most used method in printing

digital printing

digital printing is a comprehensive technology developed on the basis of printing technology. It takes electronic text as the carrier and transmits it to digital printing equipment through the network to realize direct printing

no plate and variable information are the biggest features in the printing production process. The main features are: one printing, no plate making, instant correction, variable printing, on-demand printing

relief printing

the graphic part on the relief printing fingerprint plate is higher than the non graphic part. The ink on the ink roller can only be transferred to the graphic part of the printing plate, while the non graphic part has no ink, so as to complete the printing of the printed matter

relief prints are those with slight embossment on the back of the paper, neat lines or dot edges, and light ink in the center

gravure printing

has objectively caused a lot of chaos that affects the healthy development of the industry. On the contrary, gravure printing and relief printing, the graphic part of the printing plate is lower than the non graphic part, forming a groove shape. The ink only covers the groove, and there is no ink on the surface of the printing plate. The paper is covered on the upper part of the printing plate, and the ink is transferred from the concave part of the printing plate to the paper by pressing

gravure printing products have thick ink layers, bright colors, and printing plates have the advantages of high printing resistance, stable printing quality, fast printing speed, etc., so they are widely used in practice

silk printing

silk printing refers to that under the extrusion of the scraper, the ink leaks from the hole of the graphic part to the substrate, while the wire hole of the non graphic part is blocked in May this year, so the ink cannot leak to the substrate, so as to complete the printing of the print

silk printing can also be used for large-area printing, and the maximum range of printed products can reach 3 meters × 4 meters, or even larger

in order to achieve a specific display effect, after the product is printed, post printing processes such as bronzing, film coating, concave convex embossing, UV imitation metal etching, die cutting, etc. will be carried out according to different needs. The main post press processes are as follows:

die cutting process

die cutting process is a molding process that uses a die cutter to group and disassemble the die cutting plates according to the product design pattern, and under the action of pressure, rolls the printed matter or other plate-shaped blanks into the required shape or cut marks

bronzing process

the expression of bronzing is to make the desired bronzing or silver bronzing pattern into a convex version and heat it, then place the aluminum foil of the desired color on the printed object, and after pressurization, make the aluminum foil adhere to the printed object

lamination is a surface processing process after printing, which refers to using a laminating machine to cover a layer of transparent plastic film on the surface of the print. After phase I production capacity of 200000 tons of coated printing, the surface will be smoother, brighter, stain resistant, water-resistant and wear-resistant

concave convex embossing process

this process uses the greater pressure of the letterpress to press the local patterns or words on the already printed semi-finished products into concave convex and three-dimensional graphics and texts

uv imitating metal etching printing process

this process is to print a layer of uneven translucent ink on the substrate with metallic specular gloss (such as gold and silver cardboard), which is cured by ultraviolet (UV), producing a similar effect of bright metal surface after etching or sanding. UV imitation metal etching ink can produce suede and matte effects, which can make the printed matter look soft, solemn, elegant and luxurious

in addition to the above five commonly used post press processes, there are also processes in the field of packaging and printing, such as refraction, indentation, hydrothermal transfer, drop molding, relief, sanding, ice flower, silver scraping, etc

in the process of commodity circulation and consumption, packaging plays an important role. It is not only a means to realize commodity value and use value, but also a bridge between commodity production and consumption. With the upgrading of consumption, more and more consumers begin to pursue new ideas in form while paying attention to the quality of goods

accordingly, product packaging has been paid more and more attention by enterprises because of its brand effect and advertising function. Therefore, packaging and printing technology will usher in greater development in the future