UV printing technology

1. UV bump printing ink
(1) UV bump:
Commonly used in the printing business cards. The so-called uplift printing, is derived from the United States using the Barco's printing press before being elevated to this title. Will the heating and melting resin powder (140 ~ 150 ℃) to make it swell, but the grounding can be the usual offset ink ink and letterpress inks can be used. Appropriate amount of raw materials, heavy offset paper, the amount of light the paper or coated paper will be incurred due to wrinkling or blistering heat. Printing Method: Offset printing, or letterpress + uplift.
(2) on the thick light oil
Screen Printing in the uplift of the use of part of overprint UV light oil. There are several varieties of oil bright enamel-like, dull, or grain-like pattern, etc.. Applied to a variety of products such as samples, and three-dimensional Sealed. Recent samples of building materials, not genuine, instead of using this method is printed in practice. Printing Method: Screen Printing.

2. Fluorescence, luminescence ink
(1) day-light fluorescent ink
Is now widely available, it seems that there is no particularity, in fact, from the color effect of the perspective, it is generally of a kind of ink can not be brilliant fluorescent ink colors. Day-light fluorescent ink absorption of ultraviolet and short wavelength side, and has converted to long-wave characteristics of shade, etc. Then use the paint with colored light amplification. Application of this brilliant, making it possible to complete the printing of high brightness, that is, using the same pattern usually associated with four colors (yellow, red, blue and black) printing compared to 4-color + fluorescent color (1 ~ 2 colors) to print, can be more for the bright reproduction. More recently, the printing industry around the world to actively introduce the 8-color rotary printing press, coupled with the popularity of personal computers, but also make the print media color reproduction area be expanded so that more than 5 colors multi-color printing more and more prevalent . Way, will undoubtedly result in the further development of this technology. However, because of fluorescent pigments (to be made after the fluorescent dye dissolved in resin for powder-based solid solution) and poor resistance to rotation, if the use of offset printing ink film will be thin and may suffer due to fading, so the need for full attention to selected species. For advertising, that require high resistance to rotation of items, should be able to use printed thick film screen printing ink. Printing method: offset printing, screen printing, gravure printing can be.
(2) colorless fluorescent ink
Because of its anti-counterfeit nature, commonly used in the printing stock or admission tickets. For this ink pigment, and used in day-light fluorescence difference. Usually (day light or in fluorescent lamps below) Shaodai for white or yellow color, but once the projection of some sort of a non-visible wavelengths such as ultraviolet radiation, they absorb the ultraviolet rays into visible light, and hair color. Are generally inorganic pigments (zinc sulfide, zinc oxide, etc.) issued suffering from color amblyopia produced when the amount of ink to be more, but the resistance to rotation is good. With a small amount of organic pigments, hair color is superior, but poor resistance to rotation. Printing Method: Screen printing, letterpress printing, offset printing can be.
(3) Luminescent ink
Refers to inorganic fluorescent pigments, in particular, is to absorb sunlight or fluorescent light, savings up gradually released in the dark, using functional pigments with luminescent ink is made. If the pigment particles Gaode too small will lead to weaker light, so size should be more coarse. To this end, for the printing of use, mainly for the production of screen printing ink.

3. Resistance to rotation of ink
Resistance of the printing ink used in optical activity is largely dependent on the pigment. 4-color plate in the blue ( cyanine blue pigment: CI Pigment 15:3) and black (Carbon Black: CI Pigment Black 7) for the same type of reason alone, not a big issue, but the yellow (mainly double-azo Huang AAA: CI Pigment Yellow 12) and red (magenta 6B: CI Pigment Red 57:1) easily lead to alteration or fading. The yellow side, although CIPY97 (single-azo Department) PY109 (cited different mouth mouth Duo), in red, there CIPR122 (Piperidine-one system), etc. The strong resistance to rotation of the pigments, but the manufacture of printing ink when the costs are too high, we must consider the purpose and budget to determine whether or not adopted.
Resistance to rotation of the printing ink of the survey methodology can be used outdoor exposure and fade-resistant weather fastness tester or tester apparatus for testing such investigation. This is the result of certain conditions. As the ink film thickness, density, drawings, prints stored in the different effects of the environment will occur, so clear in order to obtain the absolute value is difficult. Therefore, the need for resistance to rotation of ink occasions, the best first ink manufacturers to make specific conditions of use, we should always make it clear the contents of printed pattern we go. In addition to resistance to rotation of patience beyond, such as the need for water resistance, alkali resistance, solvent resistance and other occasions, negotiations should also be clear in advance. Printing method: offset printing, screen printing, gravure printing can be.

4. Environmental Response Ink
On a global scale, environmental protection activities are at high tide, the printing-related industries is no exception. Recycled paper used in the newspaper industry has increased recently than before, and in other use of the printing industry has also been put in place. As for the ink industry, on the autonomy of ink standard nineties of the last century has been designated more than 100 kinds of materials, in addition, in the offset field, does not use aromatic hydrocarbon solvent system corresponds to the ecological standards of ink, Jixi in deinking and lower VOC's soybean oil ink and so on, so far into the environment continue to deal with ink design. And then to December 2002, not only offset the field, together with the gravure, flexo ink in all areas, there are specific environmental response to ink market. Has been pushing for the use of non-aromatic ink, and now wants to encourage reducing VOC as the new standard. Require non-toluene-based gravure printing ink, water-based technology. Water-based flexo inks and UV-based requirements, offset ink requires non-aromatic-based and low VOC-based, non-VOC-based, and non-use of harmful substances in ink. All of the ink if it can become a perfect environment for when is the best, and in the present conditions, if it can be used to adapt to the environment and value-added inks, coupled with the use of recycled paper and so on, will no doubt enhance the image of printing enterprises .