In offset printing, screen printing, flexo printing, gravure printing and other printing processes, gravure printing on the ground, gold and silver ink printing, pearl ink printing printing quality advantages and the breadth of printing materials, has been the industry's unanimous recognition. Become a new concept in the packaging and printing industry.
On the one hand, the gravure printing technology has become more and more mature, the application of digital laser engraving technology, the development of non-benzene ink and water-based ink, the consistency of the hue of printed products has laid a good foundation for the promotion of gravure printing technology; on the other hand, packaging The delicate requirements of printed products, the combination of various types of small batches and various printing processes, and the continuous improvement of anti-counterfeiting requirements have accelerated the promotion of single-sheet gravure printing processes.
In the printing of tobacco and wine packaging, sheet-fed gravure has been widely used. Especially in the printing process and product specifications change, sheet-fed gravure shows more flexibility.
Compared with the web gravure printing machine, the single-sheet gravure printing machine has the following features:
1. The printing process is flexible and can be combined with offset printing, flexo printing, and web printing. Web gravure is subject to slitting accuracy.
2. High printing quality, accurate overprint, and short preparation time for product conversion.
3, to adapt to thick paper printing, especially thick paper printing. Gravure web printing is limited by the thickness of the paper.
4, to adapt to more varieties, more specifications of the printing. Web gravure can only be limited to the circumference of the drum.
5, just like offset printing can print normally, which can reduce paper loss. According to calculations, the paper consumption of a web gravure printer is equivalent to a single concave machine.
6, multi-function, with coating, UV decorative ink printing and other functions.
Among the many functions of the sheet-fed gravure press, glazing is the most comprehensive function of the sheet-fed gravure printing machine, whether it is solvent-based glazing, water-based glazing, UV glazing, or full gloss, partial glazing, The sheet-fed gravure presses are all capable, water-based glazing handles and UV glazing brightness are all highly prized.
Gravure printing UV decorative ink printing is a breakthrough in the printing technology of sheet-fed gravure printing machine. UV decorative ink can be divided into frosted, iced, refraction, coral, wrinkles, and several other kinds. Screen printing UV decorative inks also have problems such as low production speed, high reject rate, poor accuracy, poor consistency of printed products, etc. Net Printing UV Decorative Ink Development. The gravure printing process not only solves the insufficiency of screen printing, but also has a particularly strong anti-counterfeiting function, that is, in a single printing, two kinds of effects such as frosting, refraction, and wrinkle can be combined together to print, and the joint is seamless. Is not possible with any other printing process.
Sheet-fed gravure printing and sheet-fed offset printing are two different printing processes. The characteristics and requirements of gravure printing should be fully taken into consideration during development. Such as the laser card, glass card surface is bright and very good paper, in the paper conveying printing process, to ensure that no trace of scratches. It is necessary to ensure that the prints are evenly dried after high-speed printing and that the coating oil is sufficiently leveled. It is also necessary to ensure that the print pattern is clear and correct, without water ripples, knife lines and other ills. At the same time, it is also necessary to take into account the plate rollers, scraping The replacement and maintenance of the ink knife is simple and convenient and the equipment is environmentally safe.
When a company's products are still hot in the market, they should plan ahead and develop new products to maintain the sustainable development of the company. Based on this concept, Shanghai Ziming Machinery Co., Ltd. developed the new ZMA94 high-speed sheet-fed gravure printing machine to extend the series of gravure printing machines when the ZMA90 sheet-fed gravure printing machine was sold in the national cigarette and wine packaging printing market. Broaden the market for gravure printing machines to meet the needs of different customers.
ZMA94 high-speed sheet-fed gravure printing machine is the dominant concept of the new concept. The machine has advanced structure, high technical content, and excellent performance. It has not only adopted the old model of the offset printing machine in the domestic single-convex machine manufacturing industry, but is advanced. Concept, to conceive of the overall structure, to draw on the mature domestic and foreign advanced single-concave technology, introduced a new generation of products leading the domestic single-cave machine.
Firstly, it succeeded in transplanting the double-diameter cylinder in the embossing and delivery system, and equipped with strong wind drying and anti-fouling device inside the delivery double-diameter cylinder, which made smooth paper feeding, stable printing speed, and various types of paper jams. Dirty or scratched, and it has good paper adaptability.
The ZMA94 high-speed sheetfed gravure printing press adopts a hem delivery mechanism and is equipped with a new type of high-speed Feida. The paper is stable in conveying, has a long pre-registration time, can be glued and recessed, and is very accurate in printing. At the same time, due to the fast speed of the machine, the gravure ink is more fully transferred from the gravure roll to the paper, and the printing effect is even better.
In the transmission mechanism of the machine, precision double-row tapered bearings and high-precision gears are used, as well as a reasonable arrangement of rollers, so that the printed surface of the printed product is flat with no ink, no bars, and other defects.
Through years of practice. Shanghai Ziming, Beijing Zhenhengli, Shanghai Hairun and other single-claw machine manufacturers have successively developed single-color, two-color, four-color sheet-fed gravure printing machines. The ZMA94 high-speed sheet-fed gravure printing machine introduced by Shanghai Ziming has caused the printing industry a cheer and is very popular among users. The world-famous German and Japanese manufacturers of single-lens machines have also taken notice of this model. At present, all types of gravure printing machines of Shanghai Ziming Machinery Co., Ltd. have been put on the market about 150 sets, in addition to meeting the domestic market, but also exported to North Korea, the Philippines and other countries.
The single-cone machine has been widely used in the printing of cigarette packs, wine boxes, cosmetics boxes, and gift boxes. Such as "China" brand cigarettes, "fine Huangshan" tobacco, "Jin Liufu" wine, "Olay" box and other famous packaging. In particular, a large number of applications in the cigarette packet printing industry have promoted the promotion of single-concave technology.
With the continuous development of single-concave technology, the reduction of plate-making cost and the improvement of ink performance, industry insiders are very confident that single-cave machines will be more widely used. At present, Shanghai Ziming Company is also constantly exploring and innovating to meet the needs of more users with high performance and high quality products.
Author: Tang Guoping