Future prospect of the hottest new packaging print

2022-07-23
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Prospects for the future of new packaging, printing and processing technologies

there are more and more product advertisements. In the face of a wide range of commodities, many consumers may choose only by packaging, that is, based on visual appeal. Therefore, commodity packaging provides attractive business opportunities for printing machinery manufacturers. At drupa 2004 printing media exhibition, packaging and printing processing technology will become the central topic. Equipment suppliers of various processes will show new processing schemes. These schemes can be used to print various new plastic films and other printing materials with different surface characteristics and novel color effects. However, the more processing elements, the more complex the process. Before investors make decisions on equipment investment, it is important to carefully consider which process is most suitable for your printing products, which moving parts can be printed by this process and which new markets can be developed

sheet fed offset + flexo online processing

in the field of packaging and printing, and even in the rapidly developing short version printing market, many sheet fed offset printing machines are equipped with flexo glazing units. The flexo printing units are equipped with closed doctor blade devices and embossing rollers. They are not only used for glazing cloth, but also can overprint good prints. The common usage is that the flexo printing unit at the back end of the offset printing unit is used for on-line polishing of printed matter or coating of other effects; The flexo printing unit at the front of the offset printing unit can perform surface pretreatment on printing materials, For example, one layer of gold and silver cardboard or transparent plastic surface is coated with no more than 220 yuan, including single breakfast (No. 800, Zhujiang North Road, Tianyuan District, Zhuzhou, China) is coated with transparent coating, and then offset printing is used. The substrate is pearlescent polished before printing, which can produce a milky effect on the printed image. This is a processing method that many fashion customers are interested in.

offset printing has the advantage of good printing quality and low prepress and plate costs. On the contrary, flexo printing has the advantage of thick transfer ink layer, so that more pigments enter the substrate Inside the object, the machine structure is simpler. The stickiness of flexo printing ink is very similar to that of gravure printing ink. Compared with offset printing process, the ink layer of flexo printing is thicker, and even a layer of ink "coating" can be formed. The thickness of ink layer changes with the change of roller. The maximum diameter of metal pigment particles in offset printing ink is 3.5 μ m. The metal pigment particles of gravure printing and flexo printing inks can reach 9 μ m。 The main uses of the flexo printing unit on the offset press are: white ink priming, pearlescent glazing, foaming glazing, metallic gloss glazing, UV glazing and water-based glazing

single sheet flexo press for off-line processing

a single sheet offset press equipped with a flexo unit, it is logical to develop into a simple single sheet flexo/polishing machine. Sheet fed flexo printing machine is very popular in corrugated board printing. Moreover, the newly launched packaging and printing sheet fed flexographic press is equipped with a paper gripper delivery system to ensure the accurate transfer of paper between the units. The printing range is extended from ordinary paper to 1.25mm thick cardboard

the structural design of the sheet fed flexo printing machine is similar to that of the sheet fed offset printing machine equipped with two flexo printing units. It can also be simply used for UV glazing or other effects. Special glazing processes require a thick coating, such as foaming glazing, fragrance glazing, gluing, pearlescent glazing and metallic gloss glazing, which require a precise coating thickness. If the glazing method needs to be changed frequently, two glazing units can be equipped. One is specially used for water-based glazing, which not only recovers lithium, but also for UV glazing

high quality packaging printing generally needs many processes. Therefore, most of the printed matter needs to go back and forth between the glazing unit and the flexographic unit for several times. If the flexographic machine is used for glazing and multi-color printing, it will form a "bottleneck" in the production process. In terms of technology, the use of off-line sheet fed flexo printing machine is the choice for the high-quality packaging printing market

The application of UV technology in sheet fed offset printing. UV technology represents high quality, which means high efficiency, uniform products, no volatilization of harmful substances and environmental protection in on-line processing. In particular, UV glazing can be fixed instantly, so that the product has higher gloss and good wear resistance

however, adopting UV printing technology requires new technology training for employees, increasing equipment investment, materials and UV curing costs, planning the time arrangement for the conversion between UV printing and conventional offset printing, and adjusting printing characteristics, so as to reduce the odor of UV printing. Nevertheless, the advantages of UV printing far outweigh the disadvantages. Especially for packaging and printing, due to the large number of non absorbent printing materials, it poses a severe challenge to packaging design, packaging and printing processing and label printing

uv printing + conventional offset printing

uv printing machine needs some adjustment to meet the requirements of different printing manufacturers and printing materials. UV printing unit can be combined with small format, medium format and wide format offset printing machines. For the novice of UV technology, we suggest to adopt the operation mode of UV printing and conventional offset printing at the beginning to ensure that the backing and glazing layer meet the requirements of UV printing machine. In the future, the anhydrous UV sheet fed offset press will also prove its advantages in packaging printing and processing, especially in printing non absorbent substrates. With the wide recognition of UV technology, it will promote the application of anhydrous UV sheet fed offset press. UV technology also includes CTP anhydrous printing plate and CTCP technology

the demand for plastic film printing is on the rise, which used to be a monopoly market for printing. With UV technology, offset printing manufacturers can also set foot in this market. As the high temperature of the UV lamp will affect the stability and registration accuracy of the substrate, a new UV curing system has been introduced. The ink or varnish can be cured in a closed chamber filled with inert gas or nitrogen, reducing the performance requirements of the UV lamp

double glazing unit

in addition to a single UV curing equipment, there are now dual curing devices available in the market. It is possible to perform on-line UV glazing on common offset printing inks, and the cost is significantly reduced. After testing, the ink surface with special color can also be UV polished. The precondition is that this printer must have two polishing units with a drying area in the middle

processing technology focused on hybrid ink

another attractive new technology of online processing is hybrid ink technology. Traditional mineral oil ink and new hybrid ink can be used on sheet fed offset press at the same time, but the premise is that the press should be properly modified. Because the chemical properties of the surface of the mixed ink are actually the same as those of the UV ink, the ink will not swell the blanket or cot while overcoming the problems of weak adhesion and poor gloss of the printed matter

achieve film covering effect

up to now, missing printing technology, such as silk printing technology, is a common technology to achieve similar plastic texture effect. However, compared with sheet fed offset printing, its production efficiency is low, so it is not suitable for medium or large batch live parts printing. For this reason, K can rotate the buffer to the appropriate position. Ba experts, together with printing ink manufacturers Sun Chemical and epple, jointly launched a solution suitable for mass sheet fed offset printing: printing images, words or other parts that need to be emphasized with mixed ink in the first color group of the printing machine; Then it is dried and cured by UV drying device; Printing with conventional oil type offset ink/varnish in the following color decks; Finally, UV glazing and UV curing. In the final printed matter, the graphics and text printed with mixed ink can achieve high gloss, which was previously only achieved through double-layer glazing, which not only takes up more equipment resources, but also consumes more power and energy. However, the image and text printed with oil-based offset printing ink will show a rough and matte effect under the interaction of conventional ink and UV varnish. If you use a special varnish, you can even achieve the effect similar to the film covering in terms of vision and touch

low input local polishing

local polishing can be carried out by using the mixed ink system. Even if the shape of the polishing part is complex, it can be obtained through only one polishing mechanism. In the past, local glazing for sheet fed offset printing required a special printing plate, such as a photosensitive resin plate manufactured by a professional company or a hand carved polishing plate, which was not only expensive to make, but also needed to increase the time of printing. However, the new technology can use two different inks at the same time, and use the two inks to print the sharp contrast in glossiness. Usually, it is necessary to maintain 380 ℃ and 2 ℃ to achieve the purpose of local glazing

offset printing manufacturers always face some problems when providing services to printing customers. They should not only provide value-added services, but also have reasonable prices, and the printing effect should be different. As the printing machinery adopts a modular structure, this reduces the threshold for entering the above UV technology. Therefore, the upcoming drupa 2004 is an ideal place for you to weigh various processes and understand the overall overview of ink and offset press. After all, UV technology will penetrate into commercial offset printing in the next few years

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