Application of mixed ink characteristics and the development of Analysis - ink, mixed ink - Printing Industry
Is the ordinary UV curable ink composition and mixing the formation of a new type of ink formulation, ink and UV curing will generally combine technology, the printer is installed on one or more UV curing lamps, so that ink in the traditional sheet-fed printing machine printing, so that UV Varnish Fast printing and curing on the mixed ink to obtain uniform coating of high gloss effect.
The overall performance of mixed ink UV ink less than the standard, but for those who want to invest in less profitable manufacturer of printing, the ink mixing is a good choice. Early in the century, UV Varnish for its high gloss, instant dry and good abrasion resistance coating has become the first choice, but due to UV Varnish and ordinary ink and chemical properties of the chemical composition quite different The two incompatible ink and Varnish common cause between the poor adhesion. In addition, polishing finished printing the first high gloss in printed not long after the retention time, the phenomenon appears diminished gloss, resulting in uneven gloss finished printing, large ink coverage areas gloss dark decline the most, while the coverage Regional little or no part of the printing ink is still very bright.
If ordinary ink in the coating thoroughly before drying, then the results are good UV coating. Ordinary ink to prevent drying periods, the back rub in the dirt, it needs Dusting , Should have been a light dusting will smooth the surface of sand sheets present form, affecting the aesthetic appearance of printed materials after polishing. Water-based varnish
later and to minimize the powder coating line, the effect better. However, in the feed sheets to press twice, it makes the cost higher, reducing efficiency. To overcome this shortcoming, serigrafia developed with a two-family Polishing machine Group press. Paper in press in a feed on the two polishing units in ordinary ink printed on two layers of the varnish. First, a layer of water based varnish printed on the cover of ordinary ink primer layer, and then printing them with UV Varnish high gloss. As the water-based varnish is difficult to fully dry, water based varnish the real needs of varnish drying in the acrylic emulsion coalescence. To speed up the printing press on it in the dry inevitably lead to other problems. While some print works well with this coating, but the face of a wide variety of printed materials is still difficult.
Recent years, some ink manufacturers and material development of the common ink curing material mixed, placed in the UV coating machine UV light to mix before the ink was dry and solid, UV coating formed on the surface after the printing of high gloss, so that the birth of a hybrid ink. It is the combination of common materials, UV curable material with a mixture of ink used in printing units before the end and put UV coating unit mixed ink UV lamp to complete curing. Effect depends on the specific coating, UV varnishing, printing materials and polishing device type, but when mixed with UV inks and curing a good combination on the varnish, it will be shiny and bright uniform printed matter.
Mixed characteristics of ink, compared with ordinary ink, mixed ink many advantages: a combination of mixed-ink printing and traditional offset printing UV curing characteristics of the material, so that ink can be cured by UV light to maximize the present characteristics of UV ink . This process lies in the UV light curing technology, high-energy UV light in the press and polishing equipment to mixing between the instant drying ink curing. Significantly reduce the energy consumption of such instant cure, reduce production, storage and processing costs, improve production efficiency.
Mixed inks do not require use of UV, ink is special ink used for roll, Blanket And Fountain Solution . This requires on-line printing in hybrid inks used when polishing without polishing with ordinary ink when printing. Mixed with ordinary ink printing ink as in the case, different ink roller, blanket with mixed results when used with the ink may be some differences. Mixed ink printing, after UV gloss coating will not fade after, it is particularly suitable for ink printing documents with high hiding power.
Mixed ink in the printing press on the performance just like ordinary ink. UV Ink for ink-water balance generally more difficult to control, but mixed inks are similar and ordinary ink, ink balance control is not difficult. UV ink printing features, such as dot gain, trapping, and print contrast and other than ordinary ink, mixed inks are similar and ordinary ink.
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