Screen printing in the combination printing of the

2022-08-01
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Plate printing in packaging combined printing abstract the advantages of combined printing are described. The combined printing process of printing and flexo printing, printing and offset printing, printing and digital printing is introduced in detail. With the development of packaging and printing products towards personalization and diversification, combination printing will be more and more widely used in the packaging and printing industry

keyword combination printing; Plate printing; Packaging

since the 21st century, with the improvement of people's material living standards, consumers have higher and higher requirements for the quality of packaging and printing products. In order to remain invincible in the fierce market competition, packaging printed matter should be endowed with artistic, decorative, gorgeous and exquisite characteristics on the premise that the United States and Canada have also announced the quality of similar planned products. Obviously, it is very difficult to make prints have so many characteristics at the same time under the previous single printing process conditions. In the case that a single printing method is difficult to meet these increasingly complex product requirements, a linear combined processing method, combined printing, which can complete multiple printing processes at the same time in one printing process, has become a competitive choice for printing manufacturers

I. advantages of combined printing

combined printing refers to a printing process in which two or more different printing methods are combined to complete different printing and even post press processing, that is, a printing method in which multiple printing processes and post press processing are completed by one-time paper (or plastic film and other printing materials). Simply put, it is a flow production line composed of various types of printing and post press processing units. In combination printing, processes such as flexo printing, embossing, offset printing, gravure printing, hot stamping, cold stamping and indentation can be mixed. At present, the most common combined printing units usually include printing, flexo printing, embossing and hot stamping units

combination printing is the product of the continuous development of printing technology. Compared with the traditional single printing method, the combined printing process using multiple printing methods has the following advantages

1 . It makes up for the defects of various printing methods and improves the printing quality. The combined printing process combines various printing methods, makes full use of the advantages of a single printing method, learns from each other's strengths, and can meet the various quality requirements of consumers for packaging printing products as much as possible, effectively improving the printing effect

2 . Add decoration and artistic effect to the packaging printed matter, making the printed matter unique. Compared with conventional printing methods, combined printing has the advantages of high production efficiency, low loss rate, small total equipment investment, small floor space and fewer operators, taking the melting action, tox value and OIT value of plastic bottles as quality indicators to distinguish new and recycled plastic bottles

II. Functions in printing and packaging combined printing

plate printing is one of the oldest printing methods. It can be printed on various printing materials, such as plastics, textiles, metals, glass, ceramics and other materials. Printing is widely used in commerce, advertising, packaging, art, construction, publishing, printing and dyeing, and electronics. In short, any shaped object, regardless of its size, thickness, soft, hard, curved surface and plane, can be printed. So plate printing is also called universal printing. In the middle and late 20th century, printing has developed rapidly, which is mainly reflected in the high-quality quantification of various printing materials, the automation of printing equipment, the updating of process, the application of computer technologies such as computer pre-processing system, color desktop typesetting system, digital computer plate making, electronic imaging, etc. it has gradually developed into a modern plate printing technology that keeps pace with flexographic printing, offset printing and intaglio printing

the emergence of combined printing technology has expanded a broader space for the development of block printing. Due to the special nature of printing, it can make up for some deficiencies of other printing methods. The effective combination with other printing methods can improve the printing quality, increase the decoration and artistic effect, and make the printed matter unique. In combination printing, printing mainly undertakes the following functions: increasing the attractiveness of printed matter. When adopting air permeability effect design, it is necessary to use very thick color or luminous ink; Need to show embossing, sanding and other effects on cigarette packs or cosmetic packages; Using light variable temperature printing ink to improve the anti-counterfeiting function of valuable tickets and trademarks. In addition, printing can be combined with other printing methods to print labels used in harsh environments, such as battery labels, paint labels, etc; Printing products that need to emphasize product brand and logo, such as drug description label, injection label, etc; Printing of packages that require metallic effects such as gold and silver; Printing simple and exquisite packaging with decoration effect, such as printing large areas of field and anti white characters instead of fine characters; Printing scraping prizes, such as various lottery tickets and other securities

III. plate printing in packaging combined printing

combined printing includes different printing methods, which together with other processing processes achieve the purpose of adding value to printed matter. Mr. Steve leibin, sales manager of m a t I K North America, listed three requirements that packaging printing materials should meet: higher printing quality; Better display appearance; As well as the requirements for the product "no label" appearance, reverse printing or the use of metal/fluorescent labels

leibin believes that printers combine the unique advantages of each printing method to provide stronger visual impact for label printing. For example, compared with flexography, flexography can provide higher ink coverage and higher color intensity; Using plate printing, the printing factory can remove the white pigment on the transparent white sticky material; With gravure printing, printing plants can use heavy metal or fluorescent ink, bright oil or thermal ink to achieve special effects

at present, the combination of block printing and other printing methods mainly includes the combination of block printing and flexographic printing, the combination of block printing and offset printing, and the combination of block printing and digital printing

1 . Combination of plate printing and flexographic printing

in the combination process of flexographic printing and printing, plate printing has made up for the prominent effect that flexographic printing is difficult to achieve by virtue of its unique advantages such as printing ink layer thickness and ink layer can be adjusted at will. At present, the rotary plate printing unit with high printing accuracy and the combination printing of flexographic printing machine have played an important role in the field of packaging anti-counterfeiting printing. The combination of rotary printing and flexo printing has the following characteristics

① improve the quality and creativity of printing products and enhance the attractiveness of products. If more expressive products are needed, the ideal effect can be achieved as long as the air permeability effect design is adopted, and then the thick color or luminous ink is used; It is suitable for fine packaging and decoration printing. It can be used in cigarette packs, medicines, cosmetics and other commodity packaging. Through technical treatment, it can show the effects of embossing, sanding and so on

② large area of field and anti white characters can be printed. The anti-counterfeiting function of tickets and high-grade trademarks can also be improved by using light change and temperature change printing ink

③ metal effects such as gold and silver can be obtained on the substrate. Such as book covers, exquisite greeting cards, etc

④ this combined printing method can achieve an ideal effect on the printing of suggestive signs for specific people (such as the blind)

combining embossing, printing and flexo printing, stamping, die cutting and other processes to form an assembly line for label printing production, which can obtain a variety of effects on the same product and rapidly improve the quality of printed products. This combination printing method is simple and economical. From the market demand at home and abroad, this combination printing method will have a good development prospect in the label printing industry

2. Combination of plate printing and offset printing the characteristics of thick ink layer and full ink color also provide favorable conditions for offset printing to enter combination printing. The white ink surface after plate printing, like the surface of white printing materials, can be easily printed on its surface by offset printing, showing high-quality printing effect. The combination of offset printing and printing is the preferred process for many high-end packaging, especially high-quality cigarette packs. It can even meet the needs of printing high-end labels. Beijing Lear announced the requirements of issuing the share acquisition assets report. In the combination process of printing and offset printing, large-area field color blocks can be printed by using the advantages of thick and uniform printing ink; By using the advantages of offset printing, four colors and complex lines can be printed, which can significantly improve the printing quality and effectively enhance the anti-counterfeiting effect

the combination of offset printing and printing can show artistic and creative effects such as frosting, ice flower, crystal, wrinkle and refraction. It is the preferred process for many high-end packaging, especially high-quality cigarette boxes and some specific products (such as securities). In addition, the combination of offset printing and printing can even be applied to aluminum plate printing. The combination of offset printing and printing can create high profits for enterprises, so it is very popular and develops rapidly

3 . Combination of printing and digital printing

digital printing has the advantages of saving resources, saving costs, short business cycle and high operation efficiency, and can also deepen the intimacy with customers. It is the backbone to support the development of printing at home and abroad. Since its birth, digital printing has been known for its "variable quantity, variable information, and printing from one copy". With the increasing demand for printing on demand, variable data printing, personalized image reproduction and other printing, the application space of digital printing is expanding rapidly

plate printing is diverse, and can be printed on almost all kinds of substrates. The depth and flexibility of color are unmatched by digital printing. The combination of digital printing and silk printing can just make up for this defect. At the same time, it can effectively solve the problems of centralized printing volume and urgent delivery time, and further expand the development space of digital printing and printing

conclusion

from the demand of domestic and foreign markets and the current situation of the packaging printing industry, the combination of printing and flexo printing, the combination of printing and flexo printing and embossing printing, offset printing and embossing printing are more economical combination printing methods at present and in the future, in which printing plays a vital role. He helped design and produce many experimental AIDS in this paper. There are still many technical and material problems in the combination printing technology that need to be further explored and improved. With the increasingly personalized and diversified packaging and printing products, the combination printing will be widely used in the packaging and printing industry

information source: silk printing

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