The most popular flexographic printing has a brigh

2022-07-24
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Flexographic printing has a wide range of printing: all kinds of flexible packaging plastic films, packaging aluminum thin, spray aluminum film, wet adhesive or self-adhesive labels, as well as packaging paper, paper bags, card boxes, etc. With the advantages of low price, good quality, flexibility and rapidity, the market share of flexo printing has been continuously improved

today, when environmental protection and safety have gradually changed from society to enterprise obligations, corrugated boxes, toilet paper products, newspapers, decorative wallpapers and other products are printed with water-based ink and water-based polishing, which can not only eliminate the exhaust input required to eliminate the volatilization of solvent ink, but also effectively promote the printing manufacturers to implement GMP production. In terms of market recognition, flexographic printing is the only printing method with an increasing trend. On the one hand, its simple process is in line with the mainstream of printing development, on the other hand, the new flexographic technology makes the printing quality close to offset printing and gravure printing

flexographic printing technology has new ideas

with the equipment updated by the machine manufacturer, Leidong said that the flexographic printing technology is changing with each passing day because the members of the research group did not spend less time, the market had higher quality expectations and the customers had lower cost requirements. Prepress design applies various hardware and software to make the workflow of Phototypesetting and proofing electronic and customized. Plate and plate making provide the latest thin plate, laser, CTP and sleeve technology, reducing point diffusion and increasing line. The ink adopts environment-friendly ink and UV curing ink, and the smooth coated paperboard does not need glazing protection. Printing, die cutting and slotting systems have good automatic control and man-machine interface

the latest technology of flexographic printing is shown in the following aspects:

wrinkle roller: as the "heart" of modern flexographic press, the wrinkle roller adopts a short ink path similar to gravure printing to accurately control the ink transfer. The number of lines, hole arrangement angle and hole capacity are the three main performance indicators of the embossing roller. It strives to attract high-end resource lines of new materials with international influence to transfer thinner ink layers, reduce dot expansion and improve print quality. The acupoint angle is usually 60 degrees, and the acupoint capacity depends on the shape of the acupoint. The forming, smoothness and efficiency of pits should be conducive to ink absorption, ink transfer and ink film uniformity. Flexo printing machines are more and more equipped with high-speed corrugated rollers. For example, the number of corrugated rollers in Nanhai Oriental is generally more than 400 lines/inch

ink and glazing: the ink falls on the plate and substrate to achieve less ink film transfer and good density performance, that is, low ink volume and high color. The number of satellite pre printers, unit post printers and narrow web reels equipped with on-line UV glazing system has increased year by year. UV curing inks polymerize under UV irradiation and quickly change from liquid to solid. The solid ink film after chemical reaction has better chemical corrosion resistance than traditional ink. The production cost of aluminum lithium alloy is only 10% of that of carbon fiber composites, gloss and durability. Graf of the United States has a fast running speed. IX company has recently developed a new drying technology of electron beam curing UV varnish, which can completely eliminate the odor residue and make the printing products meet the requirements of FDA

printing plate: printing plate is the main factor affecting the quality of printing restoration. Through the laser engraving process of no film, thin plate and direct plate making, the point precision, level reproduction and color saturation are improved. DuPont's digital cromalin software uses the spectral distribution graph to simulate various requirements of flexographic printing to achieve the best plate making effect. The sleeve technology allows users to install the printing plate on the sleeve, and the seamless version of laser engraving can also be directly installed on the sleeve. Shanghai Xinhua plate making Co., Ltd. used DuPont wide flexible plate and Barco CDI digital plate making machine to print 202 line samples on purple flexo printing machine

printing machine shaftless Technology: the disadvantage of the shaft is that the tension and registration deviation are caused by wear caused by different shaft speeds. In order to avoid the constant speed that can not be achieved by the shaft ink transmission system, the servo motor controlled by PLC can solve the registration defect. In addition, the shaftless technology makes the length of repeated printing unlimited

combined printing: it mainly uses flexographic printing to mix other printing and post press processing units. Combined printing usually includes flexographic printing, silk screen printing, offset printing, embossing, flat pressing or magnetic die-cutting knife; Printing, polishing, die cutting, bronzing, box pasting and bag making are completed in one production line. At present, the more than 10 combined printing machines introduced in China are new generation models, which are from gallus, nilmeter, Comco and Ko pack respectively. The magnetic round pressing die cutter is imported from rotomagic in the United States

flexo printing is more widely used

in the European and American corrugated box, paper towel and paper cloth printing markets, flexo printing accounts for 90%, flexible packaging accounts for 70%, labels 65% and card boxes 30%. In China, all ordinary cartons for transportation and packaging use flexo printing, and some high-end color cartons use offset printing. In terms of flexible packaging, flexographic printing and gravure printing are equal. However, if food and beverage are produced, flexographic printing without residue must be selected for export packaging. Flexo printing is the main printing method of self-adhesive labels, and has begun to penetrate into wet adhesive labels. There is a certain degree of over printing in China's packaging market, which hinders the promotion of flexo printing technology. If we conform to the trend of foreign packaging and the continuous progress of flexo printing technology, low-cost and high-quality flexo printing will become the mainstream of product packaging

customer requirements and market trends are also conducive to the development of flexographic printing applications:

frequent revision and version increase, such as Festival Promotion and small package subpackaging, which make the printing batch miniaturized. The flexographic printing method printed directly on cardboard has the advantages of high speed, low cost and good quality

the sales function of packaging is further reflected. The multi-color packaging design promotes the development of flexo printing machine to more than 8-color combo machine

the packaging of international companies is increasingly localized. For example, the packaging of domestic products of PG, Nestle, Coca Cola and other companies are all purchased locally, which means that China's printing and packaging processors must cooperate with the prepress suppliers of these companies abroad and have the same equipment system

brand awareness, corporate image and group design are becoming more and more popular. Many enterprises in China not only require that the domestic printing quality be consistent with that of the parent company, but also have requirements for printing methods, which will undoubtedly promote the flexibility of the packaging market

the product is humanized. Under the premise of consistent overall design, consumer goods such as candy and cigarettes display taste and strength by printing different colors

jit production, the market is developing towards intensive and large-scale, customer inventory is reduced, and more and more packaging materials are required to be directly used after delivery. Flexo printing has the fastest customer response speed

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