What is the role of wax emulsion in ink?Adding water-based wax emulsion as an ink additive in the water-based system will not change the resin system, and will not affect the formula, and give the ink flowering, feel, matte, matting and other properties.
1. Improve the gloss of water-based ink: improve the surface performance of water-based coatings and inks after film formation, which can improve the waterproofness and heat resistance, anti-stickiness, anti-scratch resistance of the coating film, and increase the smoothness of the coating filmHigh abrasion and abrasion resistance, and high matting effect.
2. The effect of the average particle size of wax emulsion on the gloss of the coating
It is generally believed that the greater the change in the particle size of the wax emulsion, the more obvious the gloss effect, and the gloss of the coating is also related to the crystallinity of the wax. The wavelength of visible light is 400-700 nm, and when the particle size of the polyethylene wax emulsion is less than 1 2 of the wavelength of visible light, i.e., 200 nm, light diffraction occurs, which can improve the gloss of the coating. 3. Wax emulsion in water-based and ink applications
After the abrasion resistance, slippery and scratch resistance are added to the water-based ink, the wax emulsion forms a film in the water-based system, and in this process, the wax emulsion drifts to the surface of the film, forming a wax protective layer on the film, reducing the friction coefficient, improving the wear resistance and smoothness of the coating, changing the stress direction of the coating, and improving the scratch resistance of the coating.
The wax emulsion for ink will migrate to the surface of the ink during the film-forming process, evenly disperse, and form a wax protective layer, so as to improve the surface properties of the ink. With the increase of wax emulsion, the wax protective layer formed on the surface of the ink can improve the smoothness of the paper, reduce the coefficient of friction, and significantly reduce the wear of the ink. When the dosage is greater than 5%, the void between the spherical wax particles on the surface is reduced, and the effect of increasing the dosage is not obvious.