When polyethylene wax is used for water-based ink, it is usually oxidized polyethylene wax, which is added with emulsifier to make lotion or dispersed in acrylic resin. The oxidized polyethylene wax improves its hydrophilicity to some extent. Adding wax lotion to water-based ink can reduce the length of the ink head in the packaging, the pigment settling and caking, and the thickness of the ink film.

Ink is a uniform mixture composed of colored bodies (such as organic pigments, dyes and other solid components), binders (vegetable oils, resins or water, solvents, i.e. liquid components in ink), fillers, additives (plasticizers, desiccants, surfactants, dispersants) and other substances;
The smaller the particle size of wax additive, the more obvious the improvement of gloss, the larger the particle size, and the obvious improvement of abrasion resistance. The lotion particle size has an impact on the gloss of the coating.

The visible light wavelength is 400~700nm. When the particle size of oxidized polyethylene wax lotion is less than 1/2 of the visible light wavelength, that is, 200nm, light diffraction will occur, which can improve the gloss of the coating. It is generally believed that the greater the particle size change of wax lotion, the more obvious the gloss effect; In addition, the glossiness of the coating is also related to the crystallinity of the wax. The particle size of oxidized polyethylene wax lotion has reached the nanometer level, which is a good surface protector for high gloss ink wash system.

The Function of Polyethylene Wax in Ink
1.Adding 1% – 3% polyethylene wax to the ink can change the fluidity of the ink and reduce the viscosity of the system;
2.Polyethylene wax can improve the smoothness, abrasion resistance and scratch resistance of printing ink; Improve pigment dispersion.
3.It can also improve the hydrophilicity, speed up the fixation, and make the print dot complete;
4.At the same time, the disadvantages of caking, roughening and rubbing dirt are reduced; The printing performance of the ink is improved;

5.Polyethylene wax added in ink can be dispersed by organic solvent, emulsified with water, and made into fine powder wax with appropriate particle size.
Qingdao Sainuo Chemical Co.,Ltd. We are manufacturer for PE wax, PP wax, OPE wax, EVA wax, PEMA, EBS, Zinc/Calcium Stearate…. Our products have passed the REACH, ROHS, PAHS, FDA testing. 
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