Composite technology, light up printing value-added services

The profit of traditional printing business tends to be marginal, and how to seek profit growth points beyond the traditional business has become the industry's most concerned topic, and "value-added services" have also ranked first in the popular vocabulary. Printing equipment manufacturers and printing companies are thinking about how to use the fewest processes and the lowest energy consumption to obtain the highest quality and high value-added printed products under the increasing operating costs.

Large-format printing has become a typical case of value-added services for printing companies. In 2008, the KBA ’s latest technology promotion tour seminar, following large-format printing, KBA brought another high-value-added new technology to China. This is the composite printing technology. Hybrid printing technology (Hybrid) is derived from Latin, which means a mixture of two different components. The application basis of compound printing technology is compound ink. How to use compound ink with varnish is the key to compound technology.

UV inks are more and more used in the printing of high-end prints due to their advantages such as fast drying speed, good environmental performance, outstanding gloss effect and high color saturation of printed matter. However, because of its expensive equipment cost and the speed of printing that is difficult to break through due to the balance of water and ink, UV printing has become the heartache of many printers pursuing high added value. In order to solve these two technical problems of UV printing, German KBA Company began to develop composite ink printing process at the end of the last century.

Composite ink is a mixture of ordinary ink and UV ink, it has many characteristics of ultraviolet ink and traditional ink.

· Drying through oxidation and UV polymerization, fast curing · Good combination with UV oil, minimize the loss of brightness of UV oil, and obtain high gloss value · Less energy input than pure UV ink, lower energy consumption , More environmentally friendly · has good water and ink balance, similar to ordinary ink, simpler operation · printing speed is faster than using UV ink · composite ink printer does not require special UV printing device, and can print ordinary ink and composite ink even It is a UV ink · composite ink printing machine that can be easily converted between composite ink and traditional ink, without replacing the rubber roller, blanket and drying module, reducing equipment investment

Reduce costs for customers and customers

For the glazing system using traditional ink, because the ink is often coated with varnish without drying, the varnish will soon penetrate into the ink and cause the gloss of the printed product to become dark after the ink is cured. In order to avoid this problem and increase the added value of products, many printers have adopted a double-glazing system, namely: traditional ink + primer coating + UV glazing plate glazing. The primer is used as a sealing layer, and then used UV glazing to brighten. Although this method can achieve a high gloss effect, but because the UV coating is a flexible version, it is very easy to lose details during the plate making process, coupled with its high plate making cost, this high value-added product is also worthy of the name. Has a "high price".

Figure 1: Printed matter

Figure 2: Double-glazing system using traditional ink

Figure 3: Using composite ink plus light system

The compound technology glazing system is: compound ink + ordinary printing plate coated oil-based bright oil + full version UV glazing. The oil-based varnish interacts with the UV varnish. The areas without oil-based varnish exhibit a gloss effect, while the areas coated with oil-based varnish exhibit a matte effect. In this system, since the ordinary printing plate is used to apply the oil-based bright oil, the overall structure is equivalent to five-color printing + full-page UV glazing, thereby increasing the cost of UV flexo plate-making while passing on the high cost Varnishing degree of glazing and expressiveness of glazing details.

In the use of printing equipment, due to the slow curing speed of the traditional ink in the double coating system, the paper path of two units is often required to dry the printed matter before UV coating, while the composite ink only needs to increase UV drying between the units The device can be cured immediately, eliminating the waste of the unit and the waste of floor space. At the same time, the composite printing machine can also print ordinary inks while not printing composite inks, ensuring a high usage rate. [next]

Bring higher profits to customers

The key point of the composite technology is the combination of ink and varnish. The oil-based bright oil interacts with the UV varnish to achieve the glazing effect, so with the change of the composition of the oil-based varnish and UV varnish , The printed products will have different effects. In terms of online finishing, composite printing technology can provide customers with more products with high added value.

Figure 1: The embossing effect printed by composite technology, using equipment: KBA Rapida 105U-6 + 1

Figure 2: Snowflake and glazing effect printed using composite technology, using equipment: KBA Rapida 105U-6 + 1

The bulging effect, snowflake effect and glazing effect in online finishing are special effects caused by the chemical reaction of the varnish used on the oil-based bright oil unit and the UV glazing unit with each other. Although this effect is obtained by the mutual reaction of the varnish, in the whole process, because the quick-drying property of the composite ink ensures that the two varnishes can be glazed on the dried print immediately after the four-color printing Printing, so you can get this special effect that must be completed in an independent process under traditional conditions in the online process.

The charm of composite ink technology is not just the effects it can produce. In the case where the cost of consumables is similar to that of UV printing, the price and cost of the composite printing machine are much lower than that of the UV printing equipment; the good ink-water balance characteristics of the composite ink make the equipment's handling and production efficiency higher than the UV equipment . Compared with traditional inks, good online finishing performance can help printers reduce more equipment, plants, labor and printing processes, and provide their customers with more economical and high-value-added prints.

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