Water color developing ink and preparation method thereof
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A technology of color-developing ink and water contact, which is applied in ink, household utensils, applications, etc., can solve the problem that embossed ink does not have color development when contact with water, and achieve the effect of good anti-counterfeiting characteristics
Active Publication Date: 2014-10-29
天津环球磁卡科技有限公司
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Abstract
Description
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Problems solved by technology
However, the current embossed inks do not have the characteristics of water color development
Method used
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preparation example Construction
[0014] The preparation method of the water color developing ink of the present invention comprises the following steps: A. Accurately weigh the resin, filler auxiliary agent and color developing agent, put the weighed materials into the container, stir and mix for 20 minutes; B. Use a three-roll mill for grinding, with a grinding fineness of ≤15 μm After that, the ink is filled.
[0015] The obvious color ink of the present invention is not only suitable for letterpress printing but also for dry offset printing. After printing, the pattern is colorless or colored. If the surface of the pattern is painted with water, there will be colored traces, and the color will appear under the excitation of ultraviolet light with a wavelength of 365nm. It will not fade after drying. It has anti-counterfeiting effect.
Embodiment 1
[0016] Embodiment 1: carry out accurate weighing of various materials by formula, resin is embossed phenolic modified resin 84 grams, colloidal calcium 5 grams, cobalt dry oil 1 gram, printing ink thinner 5 grams and color developing agent 5 grams; Weigh After measuring, pour the above-mentioned substances into the mixing bucket, stir and mix for 20 minutes; grind with a three-roll mill, and the grinding fineness is ≤15 μm After that, the ink is filled.
Embodiment 2
[0017] Embodiment 2: Carry out accurate weighing of various materials according to the formula, resin is embossed alkyd modified resin 77 grams, Lithol scarlet 5 grams, colloidal calcium 3 grams, cobalt dry oil 1 gram, ink thinner 6 grams , 8 grams of coloring agent; after weighing, pour the above-mentioned substances into the mixing bucket, stir and mix for 20 minutes; grind with a three-roller mill, and the grinding fineness is ≤15 μm After that, the ink is filled.
[0018] The colored printing ink that makes by the present invention can reach following technical index:
[0019] Color: white or light
[0020] Viscosity: 6-9
[0021] Fluidity: 30-40
[0022] Fineness: less than 15μm
[0023] Dry conjunctiva: less than 24 hours
[0024] Shelf life: 12 months.
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PUM
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Abstract
The invention discloses an ink capable of developing color in the presence of water and a preparation method thereof. The ink comprises the following components in percentage by weight: 75 to 85 percent of resin, 7 to 15 percent of a filler auxiliary agent and 3 to 8 percent of a color former. The resin is letterpress printing modified phenolic resin or letterpress printing modified alkide resin; the filler auxiliary agent comprises colloidal calcium, a drier and an ink thinner; and the color former is of yellow, green and red anhydride naphthalene types, and is coated with polyvinyl alcohol. The preparation method of the ink capable of developing color in the presence of water comprises the following steps of: A, accurately weighing the resin, the filler auxiliary agent and the color former, putting the resin, the filler auxiliary agent and the color former into a container, and stirring and mixing the components for 20 minutes; and B, grinding by using a three-roller grinding mill, and when the grinding fineness is less than or equal to 15mum, filling the finished ink. The ink has the beneficial effects that a developing agent which develops a fluorescence color in the presence of water is added into the letterpress printing resin, so that a pattern quickly develops colors in the presence of water, can not fade after being dried and particularly develops the fluorescence color under 365nm ultraviolet light, thus the ink has a good anti-fake characteristic; and the ink is suitable for letterpress printing and dry offset.
Description
technical field [0001] The invention relates to a color-developing ink upon meeting water, in particular to a color-developing ink upon meeting water which is suitable for embossing printing. Background technique [0002] Most of the existing water-changing inks are screen inks. There are two types of screen color-changing inks on the market. The principle of color development of one kind of screen color-changing ink is to use water-transparent ink on the screen printing on the printed pattern. The ink is transparent so that the covered pattern appears, and the resin becomes opaque after the water evaporates and the pattern is covered. Another kind of screen color-changing ink is humidity-sensitive ink. Its coloring material contains substances whose color changes with humidity. However, when printing with screen color-changing ink, the amount of ink used is large and the printing speed is slow, so it is not suitable for continuous mass printing. Embossed printing ink, com...
Claims
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Application Information
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