Flexographic printing features

2019-10-25

In developed countries, flexographic printing is not only used for packaging and decoration printing, but also for commercial and newspaper printing. In the United States, 20% of newspapers are printed on flexo machines. This is determined by the strengths and strengths of the flexible version. Its characteristics are summarized as follows:




First, the ink layer is thick and the ink color is consistent. Although the flexographic ink layer is thinner than the gravure printing, it is absolutely thicker than offset printing, which is very advantageous for the large-area color blocks commonly used in printing and packaging products. Generally, if the paper is in the same condition, the ink is in the same condition. If it is the same, the ink color between the same batch of products and different batches of products can be consistent, which is the most basic requirement of packaging printing, which is not easy to achieve by offset printing.




Second, extensive use of non-toxic water-based ink printing. Flexo ink is the only non-toxic ink approved by the American Food and Drug Association in all current printing methods. Therefore, flexographic printing is also known as green printing and is widely used in food and pharmaceutical packaging.




Third, the printing medium is extensive. Flexo printing machines can print all kinds of paper, and can also print aluminum foil, plastic film, self-adhesive paper, self-adhesive film, cellophane, metal foil and textiles. The type of printing medium is more than gravure. In addition to paper, the offset printing method cannot or does not print well.




Fourth, the product has a wide range of applications. Almost all paper and plastic film packaging products can be printed in flexo. The printing effect on plastic film is comparable to that of gravure printing. Because the plate is soft and the printing pressure is small, it is especially suitable for corrugated paper and so on. The printing of pressure printing media; and in addition to packaging products, newspapers, books, magazines and other books and periodicals products can also be printed.




5. The equipment has strong processing capability. Almost all narrow-format flexographic presses can be post-printed on the same equipment, such as reverse printing, glazing, laminating, die cutting, cross-cutting, slitting, punching, dragon fighting, fan folding, Automatic discharge, etc., can even add number, bronzing or screen printing units on the printing unit. Therefore, it is not unreasonable to call a flexographic printing machine a printing processing line.




6. Low production costs and high economic returns. Compared with gravure printing, the plate making cycle is short and the plate making cost is 30% lower; the ink consumption is 30% less than the gravure printing; the power consumption is saved by 40%; the printing speed is fast, and the unit printing speed of the narrow-format flexo printing machine can reach 150 per minute. Meter, satellite wide-format flexo printing machine can print up to 250 meters per minute; the scrap rate is lower than gravure and offset printing; it takes up less production space; and the comprehensive processing ability is strong, one molding, saving the labor of the subsequent process; The waste of turnover between processes is avoided; thus the overall production cost is low.




7. Production investment is small. Due to the relatively simple construction of flexographic printing presses, equipment investment is lower than offset presses or gravure presses of the same size, typically saving 30% to 40%. In addition, in the case of a narrow-width flexo press, since it has almost all of its post-press processing functions, users can purchase a flexographic printing press without having to add additional post-pressing equipment such as die-cutting and glazing. This saves part of the investment. At the same time, it also saves the occupied space and labor of this part of the equipment.