A brief description of the composition of printing inks

Colored body (color material) Pigment organic pigment, inorganic pigment dye disperse dye, oil-soluble dye, other dye oil vegetable oil dry oil, semi-dry oil, non-drying oil mineral oil printing ink binder resin natural resin, natural resin derivative Substances, synthetic resin solvents hydrocarbons (hydrocarbons), alcohols, glycols, esters,
Ketones, other solvents, plasticizers, waxes, natural waxes, synthetic waxes, auxiliary drying agents, other dispersants, wetting agents, cross-linking agents, anti-skinning agents, stabilizers,
Matting agents, defoamers, anti-precipitation agents, photosensitizers, anti-agents, etc. (1) Pigments for pigment printing inks are formulated from pigments or dyes. Pigments are colored in the state of microparticles and evenly in the linking material; the dyes need to be formulated into a solution and colored in a molecular state when used. At present, more pigments are used in oil black. Pigments are colored in the state of particles, so the size, shape, distribution, and surface properties of the particles have a direct effect on the ink properties.
Colorants for printing inks require bright color and strong coloring power. Since the ink film is only a few microns thick, it is required that the color material has a sufficient color density. In addition, depending on the purpose of use, pigments are required to have different resistances. Commonly used pigments should have sufficient color density. In addition, depending on the purpose of use, pigments are required to have different resistances.
(2) The binder material, also known as the medium, is made of a small amount of natural resin, synthetic resin, cellulose derivative, and rubber derivative dissolved in a dry oil or solvent. The role of the binder in the ink is to evenly disperse the pigment particles, so that the ink has a certain degree of fluidity, and the ink can form a uniform thin layer after printing, and after drying, an ink film with a certain strength is formed. The linking material should have a film-forming effect, so that the pigments can protect the pigments from the printing surface, and the pigments will not be powdered off from the substrate. The linking material should have a certain viscosity, so that the ink can fully wet the printing. Things, drying in a short time.
(3) The fillers commonly used in filler inks include aluminum hydroxide [AL(OH)3], barium sulfate (BASO4), magnesium carbonate (MGCO3), calcium carbonate (CACO3), aluminum oxide white, and the like. The filler is a white or colorless transparent powdered substance. Its role is to dilute over-saturated pigments with too much hiding power in accordance with the requirements of printing, reduce the amount of pigments, and reduce the cost of ink. The filler can also adjust the fluidity of the ink, set off the color, and make the color of the ink more vivid. Therefore, the texture of the filler will directly affect the quality and output of the ink.