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Ordinary ink on the uv glazing-uv glazing coatings

Published :2012/8/13 21:49:53 | information source:

Now, use of the offset printing, coating uv glazing chemical sclerosis. These uv coating contains connection materials, reaction thinner and light initiator. Under uv irradiation, happen network reaction, to make the paint curing. Ultraviolet light to the initiator release chemical base, cause acrylate polymer, form long chain net connection. But the reaction that oxygen.

For cationic sclerosis coating, ultraviolet light trigger ion to form, formed a chain reaction atherosclerosis. Because of the continuity of curing, although curing speed is slow, but can completely cured. Cationic hardening of the method of uv glazing coating used for food packaging, because they didn't smell and sclerosis thoroughly. Our test focuses on chemical base sclerosis ultraviolet glazing coating.

Increase the UV coating dosage can improve gloss, but the results as a base of the amount of increase. The test, the UV coating weight from 20 cm3 / m3 increased to 30 ccm3 / m3, no matter how much ink coverage, burnish increase at least 10 points. Decided to UV coating dosage, don't forget, because the cause of viscosity, if the amount is too big words, difficult to smoothly coating. The UV coating heating to 40 , can strengthen liquidity, also can add luster.

Another anilox roll of geometric shape also influence the flow of the coating. In addition to outside of quantity, number of cable also play a role. No foam coating only, can generate good luster effect. When anilox roll nets etam filled with coating, the tiny bubbles in the coating is formed in the bubble. This kind of situation can add defoaming agent improve, together with reasonable combination of the coating circulation system, make sure not to stir the coating excessive.

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