Oxidizing inks, oil-modified resins, pigments, fillers, driers, inks, storage of ambient temperature, humidity, etc. The ink on the crust has an effect on the use of anti-skinning agents, you must consider the above factors, add The following seven basic knowledge, but also should pay attention to the question: how to effectively prevent the ink shell?
A pigment with high color strength; the binder is composed of water, a resin, an amine compound and other organic solvents. Resin is the most important component in water-based inks. Water-soluble acrylic resin is generally used. The components of the binder directly affect the adhesion function of the ink, the boring speed, and the anti-stick function.
Together, it also affects the gloss and ink transmission of the ink. The amine compound firstly maintains the alkaline pH of the aqueous ink, so that the acrylic resin can supply a better printing effect. The water or other organic solvent is mainly the solvent, the viscosity and the drying speed of the conditioning ink. The auxiliary agent mainly includes: defoaming agent, retarder, stabilizer, weakening agent and the like.
Because the water-based ink is a soap composition, it is easy to generate bubbles during use, so it is necessary to participate in silicone oil as a defoaming agent to press and eliminate bubbles, and improve the ink transfer function. The retarder is used to reduce the drying speed of the hydrophobic ink on the anilox roller and reduce the paste. The stabilizer can adjust the pH of the ink and can also be used as a diluent to lower the viscosity of the ink. The attenuating agent is used to lighten the color of the aqueous ink, and can also be used as a brightening agent to improve the brightness of the aqueous ink. In addition, some water-based inks also need to participate in some wax to add their wear resistance.
The pH of the aqueous ink is directly related to the viscosity of the aqueous ink, printability such as dryness. Experiments show that the viscosity of aqueous ink increases linearly with the decrease of pH value, and its drying property decreases linearly with the increase of PH value. The pH value of the water-based ink is mainly maintained by the amine compound, and the evaporation of the amine substance in the printing process causes the pH value to decrease, thereby causing the viscosity of the ink to rise, the transferability is poor, the drying is accelerated, the anilox roll is clogged, and the paste is broken.
Article source address: http://
Pet Coated Scissors,Pet Cutting Scissors,Pet Grooming Scissors Sets,Color Handle Scissors
Zhangjiagang Mister Tools Co., Ltd , https://www.mingshiscissors.com