The foaming ink is formed by blending a water-based resin and a water-based water solvent, a microsphere foam, and other auxiliary agents. As the foaming ink is used in the water-based connection material, it is easy to use, no pollution, and the ink on the screen through the good and reproducible, ink layer has good solvent resistance, drug resistance, abrasion resistance And no deformation under heavy load and other characteristics.
Emulsions used in foamed inks are generally crosslinked synthetic resin emulsions, crosslinked propylene emulsions, and crosslinked reactive propylene emulsions or bad oxygen emulsions and urethane emulsions. The microsphere foam in the foamed ink is a thermally-plasticized polymer particle that is in the form of a "hollow", and is generally formed by polymerizing polyvinylidene chloride or vinylidene chloride and acrylonitrile, or methyl acrylate and acrylonitrile.
The hollow part contains a volatile expansion agent, and the expansion agent is mostly a carbon compound such as ethane, propane, butane, and the like. Microspheres are generally between 5 and 150 microns in diameter. The content of the microsphere foam in the ink is generally 5-50%, the content of the microsphere foam is low, and the foaming effect is not good. If the content is too high, the fluidity of the ink is reduced, making the ink layer uneven.
The ink uses a variety of dyes, pigments, and colorants to adjust the ink to achieve the desired color. Other additives used in the ink include stabilizers, tackifiers, defoamers, oxidation inhibitors, ultraviolet absorbers, and the like.
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