In recent years, with the rapid development of China's printing industry, printing ink manufacturing industry has been developing, especially the special varieties ink market prospects look good. As one of special varieties ink pearl ink market prospects widely anticipated, the industry was in high-end cosmetics packaging, high-grade logo and printing aspects of literature, pearl ink has strong competitiveness and development potential.
Pearl ink printing effect is generally through the visual effect of the pearl and the essence of the brightness and color effect. Printed in a different way, the effect of product difference is very big also. General use of pearl printing ink is mainly screen printing, gravure, offset printing, flexographic pearl ink, etc., and the offset pearl ink has the exquisite pearl luster and strong light refractive index, can greatly improve the grade of the printing, packing in the production of products is not only beautiful, but also has a certain amount of anti-counterfeiting effect, by the majority of businesses and consumers.
All packaging material and tags can use pearl pigment offset printing ink to printing, offset printing pearl ink by screen printing, flexographic technology application is relatively difficult, because the viscosity is relatively high, at the same time pearl pigment is grinding out shell particles, it is difficult to dissolve in among them, resulting in pearl pigment and offset printing ink is very difficult to mix, even mixing, pearl pigment distribution is not uniform. Does this mean for offset printing, the big challenge. Pearl in the offset printing ink, the application of the process, not only need to ink to adjust and to correctly choose substrates, elaborate processing, need according to the characteristics of pearl pigment to choose the appropriate printing equipment and the application of advanced technology in printing, so as to achieve optimal pearl effect. The characteristics of pearl pigment mainly include the following:
One, the fragility of pearl pigment and the thickness ratio
At present commonly used type of pearl pigment is general by sharp titanium or rutile titanium dioxide coated mica flake, lamellar structure, very crisp, very easy to broken. At the same time offset pearl ink pigment fineness requirement is very strict, such as mica titanium pearl pigment particle fineness under 25 microns. If the pigment particles is too thick, pearl ink metastatic is poor, but if the pigment particles interloper, affect the pearl effect.
Second, the ink viscosity and liquidity
Offset the particularity of pearl pigment ink for the ink is lower than other ordinary ink viscosity, liquidity is big, can meet the requirements of the floating of pearl pigment printing, so as to achieve the ideal pearl effect.
Third, the opacity of the ink
Pearl ink pearl effect depends on the incoming light refraction and the intervention effect, therefore, the offset printing pearl ink transparency has a great influence on the pearl effect. If the ink layer transparency is poor, had plenty of the light will be absorbed and pearl effect.
(Gold Printing Group) |
