The industry has begun to debate, which ink will win in flatbed printing, is it water-based ink, solvent ink or UV ink? Among the web printers, today ’s winners are obvious. Water-based inks are mainly used for low-volume users. Solvent inks dominate high productivity and large-format printers. The use of oil-based inks is limited. In this case, Youhuai believes that flatbed printing will follow the same route as this-no.
In inkjet printing, the ink formulator and producer department are working to solve the balance between nozzle maintenance (slow drying), printing, and media rewinding (quick drying). Water-based inks dry slowly, and ink manufacturers often add humidifier , Such as ethylene glycol, to slow drying and prevent nozzle clogging. All of these inks are only used for complex printing media that require high printing quality. The production cost of these products is not particularly low. Although the appearance looks like paper, it is not paper and is composed of multiple layers. For oil-based ink printers, the printing medium is required to be stricter, because the oil does not actually evaporate, and the medium must contain all the oil. For solvent inkjet inks, it is usually used to print vinyl flags, mesh fabrics and vinyl stickers. Most of them do not have a main coating that absorbs the ink solvent. Fortunately, many solvent inks can adhere to ethylene, and some solvents are vinyl polymers. Absorbed by the structure, the nozzle is well maintained. This usually indicates that there is at least a small amount of volatile solvent in the ink formulation, but it is not easy to dry. In general, many high-productivity solvent ink printers avoid the use of specialized media with expensive coatings. Printer manufacturers often use built-in preheating or post-heating rollers, platforms, or drying stations to solve this problem.
In general, most of the roller printers that are actually in operation today rely on the absorption characteristics of special media for all liquid carriers, or on the pre- or post-heating of the media. Once printed on hard and non-absorbent materials, the above is not a good way, so we have to use UV inkjet ink, which is the main reason WEB Company predicts that the use of UV inkjet ink will increase significantly (more than 180%).
For more than 10 years, UV inks have been used in traditional printing, such as offset printing, screen printing, flexographic printing and gravure printing. In these printing processes, UV inks continue to win the market share of other varieties of inks, accounting for as much as 20% in this part of the ink market. Their characteristics, such as less environmental pollution, stable process, and fast drying on non-absorbent materials (media), have become an important driving force for popularization. For offset offset printing and waterless offset printing, the introduction of UV-curable inks has made offset printing new applications in plastic materials.
It challenges screen printing and even flexographic printing in terms of aspects. In contrast, inkjet introduced UV inks late, but it has been adopted and will continue.
Another reason for the penetration of UV curing technology into inkjet printing is the commercial drive. When the inkjet inks supported by global ink companies came out, the leaders of global screen printing inks such as Seric, Toyo and 3M, they have global Distribution channels and resources, they introduced factory UV inkjet technology.
Some people say that although UV inks will be used for platform printing, they will rank behind water-based inks, solvent inks and oil-based inks. In general, many hard materials and media are absorbent, so why must use UV ink? In some respects, such as packaging, this view may prove correct.
However, many companies want to print absorbent materials as well as non-absorbent materials, such as hard vinyl, corrugated polypropylene, foamed PVC or acrylic resin. These materials are relatively expensive, so they are limited to professional printing and short-run work. In this field, lithographic printing scores are higher than screen printing. For long-run printing and cheap absorbent media, screen printing will be very good. To keep its traditional market.
The survey also shows that most large-scale printing plants and technical users require versatility to print on a variety of materials. Machines limited to printing absorbent, rigid media are not attractive to buyers.
In today's global inkjet market, UV curing inks account for less than 1%. WEB predicts that by 2010, in all applications, the market for UV inks will exceed 10%. In flatbed printing, UV curing inks Will continue to dominate.
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